Name: automated hydrophobic interaction chromatography column selection for use in protein purification
Uploaded: 2011-09-21T13:00:00.000+00:00
Duration: 10 min 21 s
Description: Watch this Scientific Journal Video about Automated Hydrophobic Interaction Chromatography Column Selection for Use in Protein Purification at JoVE.com

Este trabalho foi financiado pelo National Institutes of Health concessão GM086822 e National Science Foundation grande pesquisa instrumentação concessão DBI-0960313. Os autores gostariam de agradecer as Dras. Jon Miyake &amp; Donna Hardy (Bio-Rad) e Jennifer Loertscher (Seattle University), pela sua competência técnica. Seleccionar reagentes de cromatografia e instrumentação suplementar foram generosamente fornecidas pelo Bio-Rad.

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M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Hydrophobic+interaction+chromatography+of+proteins.+IV.+Protein+adsorption+capacity+and+transport+in+preparative+mode.">Hydrophobic interaction chromatography of proteins. IV. Protein adsorption capacity and transport in preparative mode.</a> J. Chromatogr. A. 1218, 427-440 (2011).</li><li>Huddleston, J. 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C., Banh, C., Brossay, . <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=L.A+Protocol+for+the+Production+of+KLRG1+Tetramer.">L.A Protocol for the Production of KLRG1 Tetramer.</a> J. Vis. Exp. (35), e1701-e1701 (2010).</li><li>Murphy, P. J. M., Morishima, Y., Kovacs, J. J., Yao, T. P., Pratt, W. B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Regulation+of+the+dynamics+of+hsp90+action+on+the+glucocorticoid+receptor+by+acetylation/deacetylation+of+the+chaperone.">Regulation of the dynamics of hsp90 action on the glucocorticoid receptor by acetylation/deacetylation of the chaperone.</a> J. Biol. Chem. 280, 33792-33799 (2005).</li><li>Zeytuni, N., Zarivach, R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Purification+of+the+M.+magneticum+strain+AMB-1+Magnetosome+Associated+Protein+MamA&#916;41.">Purification of the M. magneticum strain AMB-1 Magnetosome Associated Protein MamA&#916;41.</a> J. Vis. Exp. (37), 10-3791 (2010).</li><li>Kong, Y., Li, X., Bai, G., Ma, G., Su, Z. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=An+automatic+system+for+multidimensional+integrated+protein+chromatography.">An automatic system for multidimensional integrated protein chromatography.</a> J. Chromatogr. A. 1217, 6898-6904 (2010).</li><li>Camper, D. V., Viola, R. E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Fully+automated+protein+purification.">Fully automated protein purification.</a> Anal. Biochem. 393, 176-181 (2009).</li><li>Hammon, J., Palanivelu, D. V., Chen, J., Patel, C., Minor, D. L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+green+fluorescent+protein+screen+for+identification+of+well-expressed+membrane+proteins+from+a+cohort+of+extremophilic+organisms.">A green fluorescent protein screen for identification of well-expressed membrane proteins from a cohort of extremophilic organisms.</a> Protein Sci. 18, 121-133 (2009).</li><li>Wu, Y. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Using+green+and+red+fluorescent+proteins+to+teach+protein+expression,+purification,+and+crystallization.">Using green and red fluorescent proteins to teach protein expression, purification, and crystallization.</a> Biochem. Mol. Biol. Educ. 36, 43-54 (2008).</li><li>Queiroz, J. A., Tomaz, C. T., Cabral, J. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Hydrophobic+interaction+chromatography+of+proteins.">Hydrophobic interaction chromatography of proteins.</a> J. Biotechnol. 87, 143-159 (2001).</li><li>McCue, J. T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Theory+and+use+of+hydrophobic+interaction+chromatography+in+protein+purification+applications.">Theory and use of hydrophobic interaction chromatography in protein purification applications.</a> Methods Enzymol. 463, 405-414 (2009).</li></ol>

Seleccionar reagentes de cromatografia e instrumentação suplementar foram fornecidos pela Bio-Rad.

Técnicas de cromatografia líquida provaram inestimável para a preparação de proteínas altamente purificadas necessárias para a realização de 6 imunológica, bioquímica 7, e 8 estudos estruturais. Métodos de purificação HIC mais frequentemente requer a determinação empírica de um meio preferido, e estrutura de ligando, a densidade de ligando, e as propriedades da matriz do grânulo todos têm sido mostrados para impacto nos resultados cromatográficas 2, 3. Coluna automatizado de aferição é uma abordagem eficiente para a seleção de um meio de HIC para otimização subseqüente e purificação de proteínas 4. O método automatizado coluna de aferição apresentados podem ser prontamente adaptado para várias estratégias de purificação de proteínas HIC. Alterações na concentração de sal, a escolha do sal, gradiente de sal, e pH pode melhorar ainda mais as condições de purificação, e os efeitos da variação destes parâmetros essenciais foram previamente analisado 13,14. Eluato de HIC contendo uma prote alvo parcialmente purificadain pode ser adicionalmente purificado utilizando uma técnica cromatográfica complementar, tal como cromatografia de permuta iónica (IEX) ou de exclusão em gel de filtração / tamanho cromatografia 9,10. Devido à sua absorvância de luz original e características de emissão, o perfil de eluição de GFP podem ser identificados utilizando, em linha e pós-run abordagens. Para esse efeito, este protocolo pode ainda ser adaptada para a purificação de recombinantes GFP de fusão de proteínas, em que uma proteína-alvo não relacionado é &quot;marcado&quot; com GFP. Proteínas alvo GFP pode ser detectada com luz UV 11 e purificado utilizando várias abordagens cromatográficas, incluindo a estratégia de purificação HIC descrito acima. Purificação GFP também se tornou um marco pedagógico nos laboratórios de bioquímica para o ensino de técnicas de proteína ciência moderna 12. Enquanto a purificação da proteína básica de HIC pode ser conduzida usando uma substancialmente menos robusto cromatografia syhaste, a instrumentação aqui apresentado tem um número de vantagens distintas para auxiliar na obtenção de resultados favoráveis. Benefícios notáveis ​​de se utilizar um sistema altamente automatizado incluem a melhoria executar-a-correr condição de reprodutibilidade, tempo de poupança, e diminuiu oportunidades para o ar a ser introduzidos no sistema 10. Sistema controlado mistura de tampão, o que é facilitado pela maximizer sistema, permite a consistência aumentou na preparação de tampão e reprodutibilidade experimental. Desenho carga de amostra suficiente para a ansa de amostragem dinâmico para todos aferição é executado assegura ainda mais a uniformidade da amostra a ser adicionado a cada coluna e permite que para execuções sequenciais sem interrupção ou manual de recarga. Injecção da amostra controlado a partir do circuito de amostra na coluna diminui variabilidade que pode ocorrer com carregamento manual da amostra. Um par de válvulas de selecção de coluna permitir para execuções de amostra consecutivos, cada um utilizando uma coluna HIC diferente, sem ter de replumb o sistema. Executando mul<html> ti-comprimento de onda de análise é particularmente benéfico quando se examina uma proteína com um perfil único espectrofotométrico. Além disso a GFP, citocromos, flavoproteínas, e outros heme contendo proteínas podem beneficiar deste técnica. Dispositivos de monitorização de condutividade e pH permitir a verificação de tempo real condições experimentais. Dividir recolha eluato fracção permite a manipulação fracção melhorada e permite a transferência fácil para os métodos de pós-executar a análise que requerem um mínimo volume de amostra (por exemplo, ELISA, SDS-PAGE, Western blot, e Experion electroforese microfluídico). Ao operar off-line segundo coletor fração requer sincronização manual, que permite a máxima flexibilidade na seleção de coletores de fração. As desvantagens mais significativas para a utilização como um sistema de cromatografia robusto para a coluna HIC aferição e purificação de proteínas incluem o tempo inicial e as despesas orçamentais associados à aquisição de instrumentos e treinamento do operador. t &quot;&gt; O protocolo apresentado aqui utiliza um Bio-Rad DuoFlow sistema de cromatografia;. no entanto, a instrumentação igualmente robusta de outros fabricantes, tais como o Avant Akta da GE Healthcare, podem também ser utilizados e são capazes de produzir resultados equivalentes sistema de cromatografia Mesmo comparável têm características únicas de programação (por exemplo, limitações, método de nomenclatura de componentes, a preferência do operador, e escalabilidade) que devem ser considerados antes de iniciar um processo de purificação ou aquisição de instrumentos.

<table border="1"><tbody><tr><td> Nome do reagente </td><td> Companhia </td><td> Número de catálogo </td><td> Comentários (opcional) </td></tr><tr><td> <a href="http://www.bio-rad.com/prd/en/US/adirect/biorad?cmd=BRCatgProductDetail&productID=223301" target="_blank">BioLogic DuoFlow Pathfinder 20 Sistema</a> </td><td> <a href="http://www.bio-rad.com/" target="_blank">Bio-Rad</a> </td><td> <a href="http://www.bio-rad.com/prd/en/US/adirect/biorad?cmd=BRCatgProductDetail&productID=223301" target="_blank">7602257</a> </td><td> Inclui sistema maximizador, mixer, estação de trabalho F10, AVR7-3 da válvula, QuadTec UV / Vis detector com célula de fluxo, coletor de fração BioFrac, software BioLogic, e kit de iniciação </td></tr><tr><td> <a href="https://www.bio-rad.com/prd/en/US/adirect/biorad?cmd=catProductDetail&isFromSearch=true&productID=760-0408&vertical=LSR&parentCategoryGUID=22c495f1-36ff-44a3-9140-ee7e54d0b1ba" target="_blank">AVR9-8-stream selecionar válvula</a><html></td><td> <a href="http://www.bio-rad.com/" target="_blank">Bio-Rad</a> </td><td> <a href="https://www.bio-rad.com/prd/en/US/adirect/biorad?cmd=catProductDetail&isFromSearch=true&productID=760-0408&vertical=LSR&parentCategoryGUID=22c495f1-36ff-44a3-9140-ee7e54d0b1ba" target="_blank">7600408</a> </td><td> De alta pressão da válvula, 9-porta, posição 8, 3.500 psi (233 bar) limite, para uso com o sistema DuoFlow BioLogic </td></tr><tr><td> Desviador válvula SV3T-2 </td><td> <a href="http://www.bio-rad.com/" target="_blank">Bio-Rad</a> </td><td> 7600410 </td><td> Válvula de solenóide, 3-porta, posição 2, 30 psi (2 bar) limite, para uso com o sistema DuoFlow BioLogic </td></tr><tr><td> Stream Splitter válvula </td><td> <a href="http://www.bio-rad.com/" target="_blank">Bio-Rad</a> </td><td></td><td></td></tr><tr><td>tical = LSR &amp; parentCategoryGUID = 22c495f1-36ff-44a3-9140-ee7e54d0b1ba &quot;target =&quot; _blank &quot;&gt; DynaLoop 25 Kit </td><td> <a href="http://www.bio-rad.com/" target="_blank">Bio-Rad</a> </td><td> <a href="https://www.bio-rad.com/prd/en/US/adirect/biorad?cmd=catProductDetail&isFromSearch=true&productID=750-0451&vertical=LSR&parentCategoryGUID=22c495f1-36ff-44a3-9140-ee7e54d0b1ba" target="_blank">7500451</a> </td><td> Sliding pistão kit de amostragem, inclui 25 ml de deslizamento DynaLoop laço pistão, DynaLoop partes kit (# 750-0450) </td></tr><tr><td> <a href="https://www.bio-rad.com/prd/en/US/LSR/PDP/ec82e7b4-919e-428b-ac03-9adf1f50a48e/BioFractrade_Fraction_Collector" target="_blank">Coletor de Frações BioFrac</a> </td><td> <a href="http://www.bio-rad.com/" target="_blank">Bio-Rad</a> </td><td> <a href="https://www.bio-rad.com/prd/en/US/LSR/PDP/ec82e7b4-919e-428b-ac03-9adf1f50a48e/BioFractrade_Fraction_Collector" target="_blank">7410002</a> </td><td> Dois col fração<html> leitores utilizado </td></tr><tr><td> <a href="https://www.bio-rad.com/prd/en/US/adirect/biorad?cmd=catProductDetail&isFromSearch=true&productID=741-0088&vertical=LSR&parentCategoryGUID=ec82e7b4-919e-428b-ac03-9adf1f50a48e" target="_blank">BioFrac microplaca adaptador cabeça queda</a> </td><td> <a href="http://www.bio-rad.com/" target="_blank">Bio-Rad</a> </td><td> <a href="https://www.bio-rad.com/prd/en/US/adirect/biorad?cmd=catProductDetail&isFromSearch=true&productID=741-0088&vertical=LSR&parentCategoryGUID=ec82e7b4-919e-428b-ac03-9adf1f50a48e" target="_blank">7410088</a> </td><td></td></tr><tr><td> <a href="https://www.bio-rad.com/prd/en/US/adirect/biorad?cmd=catProductDetail&vertical=LSR&country=US&lang=en&productID=741-0017" target="_blank">BioFrac adaptador placa de microtitulação</a> </td><td> <a href="http://www.bio-rad.com/" target="_blank">Bio-Rad</a> </td><td>&amp; Country = EUA &amp; lang = pt &amp; ProductID = 741-0017 &quot;target =&quot; _blank &quot;&gt; 7410017 </td><td></td></tr><tr><td> <a href="https://www.bio-rad.com/prd/en/US/adirect/biorad?cmd=catProductDetail&isFromSearch=true&productID=750-0202&vertical=LSR&parentCategoryGUID=c140016b-1958-4a91-be4c-8645a4c8204f" target="_blank">Optics UV Módulo</a> </td><td> <a href="http://www.bio-rad.com/" target="_blank">Bio-Rad</a> </td><td> <a href="https://www.bio-rad.com/prd/en/US/adirect/biorad?cmd=catProductDetail&isFromSearch=true&productID=750-0202&vertical=LSR&parentCategoryGUID=c140016b-1958-4a91-be4c-8645a4c8204f" target="_blank">7500202</a> </td><td></td></tr><tr><td> <a href="https://www.bio-rad.com/prd/en/US/adirect/biorad?cmd=catProductDetail&isFromSearch=true&productID=760-1331&vertical=LSR&parentCategoryGUID=c4095dc1-9260-4431-b066-823b050048c8" target="_blank">Lâmpada halógena</a> </td><td> <a href="http://www.bio-rad.com/" target="_blank">Bio-Rad</a> </td><td> &lt;<html> um target = &quot;_blank&quot;&gt; 7601331 </td><td></td></tr><tr><td> <a href="https://www.bio-rad.com/prd/en/US/adirect/biorad?cmd=BRCatgProductDetail&productID=220901" target="_blank">Econo Bomba Gradiente</a> </td><td> <a href="http://www.bio-rad.com/" target="_blank">Bio-Rad</a> </td><td> <a href="https://www.bio-rad.com/prd/en/US/adirect/biorad?cmd=BRCatgProductDetail&productID=220901" target="_blank">7319001</a> </td><td> bomba de gradiente de baixa pressão purificação de proteínas, inclui tubagem e kit de acessórios </td></tr><tr><td> <a href="https://www.bio-rad.com/prd/en/US/adirect/biorad?cmd=BRCatgProductDetail&productID=224301" target="_blank">Experion Sistema</a> </td><td> <a href="http://www.bio-rad.com/" target="_blank">Bio-Rad</a> </td><td>bio-rad.com/prd/en/US/adirect/biorad? cmd = BRCatgProductDetail &amp; ProductID = 224301 &quot;target =&quot; _blank &quot;&gt; 7007001 </td><td></td></tr><tr><td> <a href="https://www.bio-rad.com/prd/en/US/adirect/biorad?cmd=BRCatgProductDetail&productID=224101" target="_blank">Experion Kit Análise Pro260</a> </td><td> <a href="http://www.bio-rad.com/" target="_blank">Bio-Rad</a> </td><td> <a href="https://www.bio-rad.com/prd/en/US/adirect/biorad?cmd=BRCatgProductDetail&productID=224101" target="_blank">7007102</a> </td><td></td></tr><tr><td> HiTrap kit seleção HIC coluna </td><td> GE Healthcare </td><td> 28-4110-07 </td><td> Inclui 7 x 1 ml pré-embalados colunas de mídia HIC para aferição </td></tr><tr><td> GE Healthcare para a Bio-Rad acessórios coluna </td><td> GE Healthcare </td><td> 18111251 e 18111257 </td><td></td></tr></tbody></table>

automated hydrophobic interaction chromatography column selection for use in protein purification

Em contraste com outros métodos cromatográficos para proteínas de purificação (por exemplo, filtração em gel, afinidade e de troca iónica), cromatografia de interacção hidrofóbica (HIC) comumente requer determinação experimental (referido como triagem ou &quot;scouting&quot;), a fim de seleccionar o meio mais adequado para cromatografia para a purificação de uma dada proteína 1. O método aqui apresentado descreve uma abordagem automatizada para aferição para um meio óptimas HIC a serem utilizados na purificação de proteínas. HIC separa proteínas e outras biomoléculas a partir de um lisado bruto com base nas diferenças de hidrofobicidade. Semelhante a cromatografia de afinidade (AC) e cromatografia de permuta iónica (IEX), HIC é capaz de se concentrar a proteína de interesse à medida que progride através do processo cromatográfico. Proteínas mais adequados para a purificação por HIC incluem aqueles com regiões superfície hidrofóbica e capaz de suportar a exposição a concentrações de sal em excesso de 2 ammo Mtitânio sulfato de ((NH4) 2 SO 4). HIC é muitas vezes escolhido como um método de purificação para proteínas que faltam um marcador de afinidade e, portanto, inadequado para AC, e quando IEX não fornecer purificação adequada. Porções hidrofóbicas na superfície da proteína temporariamente se ligar a um ligando não polar acoplado a uma matriz inerte, imóvel. A interacção entre a proteína e do ligando são altamente dependente da concentração de sal do tampão que flui através da coluna de cromatografia, com altas concentrações iónicas reforçar a interacção proteína-ligando e tornando a proteína imóvel (isto é, ligado no interior da coluna) 2. Como diminuir as concentrações de sal, a interacção proteína-ligando dissipa, a proteína torna-se novamente móvel e elui da coluna. Vários meios HIC estão disponíveis comercialmente em pré-embalados colunas, cada uma contendo de vários ligandos hidrofóbicos (por exemplo, S-butilo, butilo, octilo, e fenil) reticulado em diferentes densidades de esferas de agarose de uma especificaçãodiâmetro ific 3. Coluna Automated aferição permite uma abordagem eficiente para determinar que a mídia HIC deve ser empregada para o futuro, experimentos de otimização mais exaustivos e purificação de proteínas é executado 4. A proteína específica a ser purificado é aqui recombinante da proteína verde fluorescente (GFP), no entanto, a abordagem pode ser adaptado para a purificação de outras proteínas com uma ou mais regiões superfície hidrofóbica. GFP serve como um modelo útil proteína, devido à sua estabilidade, único pico de absorvância de luz a 397 nm, e de fluorescência quando exposta à luz UV 5. Lisado bacteriano contendo GFP do tipo selvagem foi preparado de um tampão de elevado teor de sal, carregado num meio DuoFlow Bio-Rad a pressão do sistema de cromatografia líquida, e adsorvido a colunas HiTrap HIC contendo diferentes meios HIC. A proteína foi eluída das colunas e analisadas por in-line e métodos de pós-run de detecção. Mistura de buffer, a injeção de ciclo dinâmico amostra, col seqüencialUMN selecção, multi-comprimento de onda, análise e de divisão de recolha eluato fracção aumentou a funcionalidade do sistema ea reprodutibilidade da abordagem experimental.

Watch this Scientific Journal Video about Automated Hydrophobic Interaction Chromatography Column Selection for Use in Protein Purification at JoVE.com

Automated Hydrophobic Interaction Chromatography Column Selection for Use in Protein Purification

Um método automático para a identificação de interacção hidrofóbica adequados cromatografia (HIC) meios de comunicação para ser utilizados no processo de purificação de proteínas é apresentada. O método utiliza um meio de pressão-sistema de cromatografia líquida incluindo mistura de tampão automatizado, injecção lacete dinâmica amostra, a selecção de coluna sequencial, multi-comprimento de onda de análise, e recolha de divisão eluato fracção.

Automated interação hidrofóbica Seleção coluna de cromatografia para uso na purificação de proteínas

In contrast to other chromatographic methods for purifying proteins (e.g. gel filtration, affinity, and ion exchange), hydrophobic interaction ...

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Biology

43.5K visualizações.  Seattle University. Um método automático para a identificação de interacção hidrofóbica adequados cromatografia (HIC) meios de comunicação para ser utilizados no processo de purificação de proteínas é apresentada. O método utiliza um meio de pressão-sistema de cromatografia líquida incluindo mistura de tampão automatizado, injecção lacete dinâmica amostra, a selecção de coluna sequencial, multi-comprimento de onda de análise, e recolha de divisão eluato fracção.

Vídeo: Automated Hydrophobic Interaction Chromatography Column Selection for Use in Protein Purification

Expression, Purification, Crystallization, and Enzyme Assays of Fumarylacetoacetate Hydrolase Domain-Containing Proteins

Fumarylacetoacetate hydrolase (FAH) domain-containing proteins (FAHD) are identified members of the FAH superfamily in eukaryotes. Enzymes of this superfamily generally display multi-functionality, involving mainly hydrolase and decarboxylase mechanisms. This article presents a series of consecutive methods for the expression and purification of FAHD proteins, mainly FAHD protein 1 (FAHD1) orthologues among species (human, mouse, nematodes, plants, etc.). Covered methods are protein expression in E. coli, affinity chromatography, ion exchange chromatography, preparative and analytical gel filtration, crystallization, X-ray diffraction, and photometric assays. Concentrated protein of high levels of purity (&#62;98%) may be employed for crystallization or antibody production. Proteins of similar or lower quality may be employed in enzyme assays or used as antigens in detection systems (Western-Blot, ELISA). In the discussion of this work, the identified enzymatic mechanisms of FAHD1 are outlined to describe its hydrolase and decarboxylase bi-functionality in more detail.

Expression and purification of fumarylacetoacetate hydrolase domain-containing proteins is described with examples (expression in E. coli, FPLC). Purified proteins are used for crystallization and antibody production and employed for enzyme assays. Selected photometric assays are presented to display the multi-functionality of FAHD1 as oxaloacetate decarboxylase and acylpyruvate hydrolase.

Expressão, purificação, cristalização e ensaios enzimáticos de proteínas contendo domínio de Fumarilacetoacetato de hidrolase

Fumarylacetoacetate hydrolase (FAH) domain-containing proteins (FAHD) are identified members of the FAH superfamily in eukaryotes. Enzymes of this ...

Bioquímica

An Economical and Versatile High-Throughput Protein Purification System Using a Multi-Column Plate Adapter

Protein purification is imperative to the study of protein structure and function and is usually used in combination with biophysical techniques. It is also a key component in the development of new therapeutics. The evolving era of functional proteomics is fueling the demand for high-throughput protein purification and improved techniques to facilitate this. It was hypothesized that a multi column plate adaptor (MCPA) can interface multiple chromatography columns of different resins with multi-well plates for parallel purification. This method offers an economical and versatile method of protein purification that can be used under gravity or vacuum, rivaling the speed of an automated system. The MCPA can be used to recover milligram yields of protein by an affordable and time efficient method for subsequent characterization and analysis. The MCPA has been used for high-throughput affinity purification of SH3 domains. Ion exchange has also been demonstrated via the MCPA to purify protein post Ni-NTA affinity chromatography, indicating how this system can be adapted to other purification types. Due to its setup with multiple columns, individual customization of parameters can be made in the same purification, unachievable by the current plate-based methods.

A multi-column plate adapter allows chromatography columns to be interfaced with multi-well collection plates for parallel affinity or ion exchange purification providing an economical high throughput protein purification method. It can be used under gravity or vacuum yielding milligram quantities of protein via affordable instrumentation.

Um sistema econômico e versátil de purificação de proteínas de alto rendimento usando um adaptador de placa de várias colunas

Protein purification is imperative to the study of protein structure and function and is usually used in combination with biophysical techniques. It is ...

Chromatography-based Biomolecule Purification Methods

In biochemistry, chromatography-based purification methods are employed to isolate compounds from a complex mixture. Two such methods used commonly by biochemists are size-exclusion chromatography and affinity chromatography. In size-exclusion chromatography, a column packed with porous beads separates components of a mixture based on size. On the other hand, affinity chromatography allows for a more specific separation of biomolecules by using a column that is composed of stationary phase, which contains target-specific ligands.
This video serves as an introduction to size-exclusion and affinity chromatography, as well as the concepts that govern them. A step-by-step procedure for the purification of a histidine-tagged protein by immobilized metal affinity chromatography is described. Applications for both of these chromatographic methods in biochemistry and biomedical research are also profiled.
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&#34;Chromatography&#34; refers to a wide range of methods used to isolate a component from a complex mixture, an essential step before a biomolecule&#39;s properties and activities can be determined. Each chromatographic technique has a different mechanism for separation, depending on the sample matrix and target compound. This video will focus on the principles and operation of two methods common to biochemistry: size-exclusion and affinity chromatography.
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Size-exclusion chromatography or SEC is based on the size of the compounds in the sample. A mobile phase containing the sample is added to a column with a porous material: the stationary phase. The molecules in the sample fall into 1 of 3 categories.
Molecules too large to enter the pores travel the shortest distance through the column. Any species with a molecular weight above this &#34;exclusion limit&#34; will exit the column at the same time. Molecules small enough to freely enter the pores will be retained the longest, and will exit the column together. The molecular weight allowing complete pore entry is the &#34;permeation limit&#34;.
Only molecules between these limits will be separated from one another, as they spend varying amounts of time diffusing into and out of the pores. Smaller molecules are retained longer on the column because they spend more time in the stationary phase, whereas larger molecules within these limits exit earlier.
Molecular weights across 1 to 2 orders of magnitude fall within these limits. Columns are chosen with this in mind, or multiple columns can be used in series if there is a wide range of desired compounds.
Now that you&#39;ve seen the theory of SEC, let&#39;s look at how it is carried out.
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<div class="chapter_text" id="script_2">
To begin the SEC procedure, the column must be equilibrated with deionized water and chromatography buffer. Once prepared, buffer containing the sample is injected onto the column. The buffer is then pushed through at a low flow rate. A detector monitors what exits the column to determine the presence of the desired analyte. Large molecules with molecular weights above the exclusion limit exit the column at the same time. Small fractions from the column are collected in tubes. Each fraction is tested for the quality of the target molecule by gel electrophoresis or other analytical techniques.
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Now let&#39;s have a look at affinity chromatography or AC, one of the most efficient ways to purify proteins. Many biomolecules bind selectively to certain ligands-a property which AC utilizes by adhering a target-specific ligand to the stationary phase.
When the mixture flows through the column, the target molecules attach to the ligand, and the rest flow through. After the mixture has passed through the column, the target molecule can be collected through one of two elution methods based on specificity.
Biospecific elution can be said to a have a &#34;normal-&#34; or &#34;reverse-role&#34;. In normal-role biospecific elution, an agent is added that competes with the adhered ligand to bind with the target biomolecule.
In reverse-role biospecific elution, an agent competes with the target to bind to the adhered ligand. The second elution type, nonspecific elution, lowers the target-to-ligand binding by changing the solution&#39;s pH, ionic strength, or polarity. If a protein does not bind to a ligand that can be immobilized, the protein can be expressed containing a &#34;tag&#34;: short peptide sequences engineered to bind to the ligand.
One variety is immobilized metal ion affinity chromatography, &#34;IMAC&#34; for short, where an adhered metal ligand, like nickel or cobalt, binds to histidine residues on the modified protein. Through molecular biology techniques, target proteins are generated with repeating histidine residues, called a polyhistidine-tag, which binds to the metal via the imidazole side chain on histidine. Once bound, the protein can be collected with free imidazole via reverse-role specific elution and later used in a wide variety of downstream applications.&#160;Now that you&#39;ve seen the theory of affinity chromatography, let&#39;s look at an IMAC procedure in the laboratory.

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In IMAC, the stationary phase can be added directly to the mixture of mobile phase and sample, allowing the binding of the his-tagged protein. This slurry is then poured into the column, where the non-bound compounds drip into waste, while the slurry remains. The slurry container is rinsed to collect residual resin and sample, which is added to the column.
The resin is stirred to ensure the unbound components are free-flowing. Added wash buffer helps flush them away. Once all of the unbound components have been removed, the waste is replaced with a container to collect the target protein.
Buffer containing imidazole is added, stirred, and allowed to rest to unbind the target molecule. The imidazole binds to the metal, replacing and releasing the tagged protein. The freed protein is collected, and the imidazole step is repeated to ensure total collection. To further purify the sample, SEC can be run on the sample prior to analysis.
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<div class="chapter_text" id="script_5">
Now that we&#39;ve seen the theory and procedure of these two techniques, let&#39;s look at some of the ways they&#39;re applied in the biochemical field.
A common reason to purify proteins is to study their role in disease. Cystic fibrosis is caused by defects in the cystic fibrosis transmembrane conductance regulator protein, or CFTR. After growing the protein with a his-tag in yeast, both affinity and size-exclusion chromatography allow the isolation of the protein, followed by the study of its function.
In some instances, the presence of a polyhistidine tag can change a protein&#39;s structure, thereby affecting its function. Another common tag is maltose-binding protein or MBP, which will bind to bound amylose in a column. Maltose is then used to release the complex. The MBP can then be cleaved and removed with SEC to produce the pure desired protein.
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You&#39;ve just watched JoVE&#39;s video on size-exclusion and affinity chromatography. It covered the theory of the techniques, went over general procedures, and covered some of the uses of the techniques.
Thanks for watching!
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Size Exclusion and Affinity Chromatography

Métodos de purificação de biomoléculas baseados em cromatografia

In biochemistry, chromatography-based purification methods are employed to isolate compounds from a complex mixture. Two such methods used commonly by ...

Education

JoVE Science Education

Química

Nickel Affinity Chromatography-Based Protein Purification: A Technique to Purify Polyhistidine-Tagged Recombinant Proteins from Bacterial Cell Lysate

Source: Pokhrel, A. et al. A <a href="https://www.jove.com/v/58547">Purification and In Vitro Activity Assay for a (p)ppGpp Synthetase from Clostridium difficile</a>. J. Vis. Exp. (2018)
In this video, we demonstrate the nickel affinity chromatography technique to purify histidine-tagged pyrophosphokinase enzymes from Clostridium difficile bacteria.

Purificação de proteínas baseada em cromatografia de afinidade de níquel: uma técnica para purificar proteínas recombinantes marcadas com poli-histidina a partir de lisado de células bacterianas

Source: Pokhrel, A. et al. A Purification and In Vitro Activity Assay for a (p)ppGpp Synthetase from Clostridium difficile. J. Vis. Exp. (2018)
In this ...

JoVE Encyclopedia of Experiments

Técnicas Biológicas

Técnicas de Cromatografia

Butyl-Dependant Hydrophobic Interaction Liquid Chromatography: A Technique to Characterize Antibody-Drug Conjugates Based on Hydrophobic Interactions

Source: Oller-Salvia, B. <a href="https://www.jove.com/v/58066">Genetic Encoding of a Non-Canonical Amino Acid for the Generation of Antibody-Drug Conjugates Through a Fast Bioorthogonal Reaction</a>. J. Vis. Exp. (2018).
This video demonstrates the hydrophobic interaction liquid chromatography-based characterization of antibody-drug conjugates. Using a butyl ligand-based chromatography column, the antibody-drug conjugates are characterized via hydrophobic interactions with the ligand.

Cromatografia líquida de interação hidrofóbica dependente de butil: uma técnica para caracterizar conjugados anticorpo-droga com base em interações hidrofóbicas

Source: Oller-Salvia, B. Genetic Encoding of a Non-Canonical Amino Acid for the Generation of Antibody-Drug Conjugates Through a Fast Bioorthogonal ...

An Affinity Chromatography Technique for the Purification of Monoclonal Antibodies

Source: Elgundi, Z., et al. <a href="https://app.jove.com/v/55153">Laboratory Scale Production and Purification of a Therapeutic Antibody.</a> J. Vis. Exp. (2017).
This video demonstrates a technique for purifying monoclonal antibodies from the culture supernatant obtained from an antibody-producing cell culture. The process involves using a matrix of crosslinked agarose beads with conjugated Protein A, which immobilizes the antibodies in the supernatant on the beads, allowing for effective separation from contaminants. By applying an elution buffer with low pH, the protein A-antibody interaction is loosened, facilitating the collection of antibody-containing fractions.

Uma técnica de cromatografia de afinidade para a purificação de anticorpos monoclonais

1. Antibody Purification by Affinity Chromatography Using an Automated Fast Protein Liquid Chromatography (FPLC) System
NOTE: The following procedure can ...

Imunologia

Antibody-Based Technologies

Production and Purification

Purification of Self-Assembling Protein Nanoparticles using Affinity Chromatography

Source: Karch, C. P. et al., <a href="https://app.jove.com/v/60103">Production of E. coli-expressed Self-Assembling Protein Nanoparticles for Vaccines Requiring Trimeric Epitope Presentation.</a>&#160;J. Vis. Exp. (2019)
This video showcases the purification of histidine-tagged self-assembled protein nanoparticles or SAPNs using affinity liquid chromatography. The resulting purified SAPN fractions are suitable for vaccine development, holding promise for potential immunotherapeutic applications.

Purificação de nanopartículas de proteínas automontáveis usando cromatografia de afinidade

1. Expression of the Self-assembling protein nanoparticles core containing a six-helix bundle (SHB-SAPN) Protein in E. coli BL21(DE3)

	Mix 95 mL of ...

Immunotherapy

Immunogenics and Vaccine Development

Types Of Column Chromatography

The stability and compatibility of column material with samples are crucial for efficient purification in chromatographic techniques. Various operating parameters such as pH, temperature, or solvent affect the packing of the column material, thereby determining the purification efficiency. The choice of column material also plays an essential role in deciding the operating parameters and can be modified based on the proteins that need to be purified.
Gel Filtration Chromatography 
When the protein&#39;s chemical nature is unknown, gel filtration chromatography is used for purification based on size. Matrices such as agarose, polyacrylamide, dextran derivatives, or silica beads are used for low-pressure systems, whereas polymeric resins are used for higher flow rates. The varying degree of cross-linking of these polymeric materials determines the pore size of the matrix, which decides the size range of proteins that can be separated.
Ion Exchange Chromatography
Ion-exchange chromatography can purify proteins based on their net charge at a particular pH determined by their isoelectric point or pI. The net charge on matrix resin is used to purify oppositely charged proteins by replacing the cations or anions from the matrix resin with the charged proteins. The resins are categorized based on the type of ion that is exchanged &#8212; positively charged proteins replace cations from cation-exchange resins, and vice versa. Strong ion exchangers with stability over a wide range of buffer pH include quaternary ammonium, sulfonate, and sulfopropyl resins. In contrast, weak ion exchangers that are effective only in a narrow pH range include diethyl aminoethyl (DEAE) or carboxymethyl (CM) resins.
Affinity Chromatography
Affinity chromatography involves immobilizing protein-specific antibodies or enzyme-specific substrates to the column material, usually agarose beads. For example, a column with the immobilized antibody of choice is prepared to separate specific antigens. When the mixed antigen sample is passed through the&#160; column, the target antigens bind to the immobilized antibodies and separate from the mixture. To separate recombinant proteins tagged with enzymes such as beta-galactosidase, the corresponding substrate Isopropyl-&#946;-D-thiogalactopyranoside (IPTG) is immobilized on the column to purify the enzyme.
High-pressure liquid chromatography (HPLC) and gas chromatography (GC) are the most commonly used column chromatography techniques. In HPLC, the solvent flows at high pressure through a tightly packed column that improves efficiency. Gas chromatography analyzes volatile compounds by converting them to their gaseous forms upon heating. The volatilized sample is pushed through the column by inert gasses such as nitrogen and helium.

Tipos de Cromatografia em Coluna

The stability and compatibility of column material with samples are crucial for efficient purification in chromatographic techniques. Various operating ...

JoVE Core

Biologia Celular

Unidade 1

Análise de Células e Proteínas

TERMOS E CONCEITOS CHAVE

Anion-Exchange Chromatography-Based Protein Purification: A Separation Technique to Isolate a Protein of Interest From Dialyzed Bacterial Lysate Based on Net Charge

Start the FPLC with general maintenance. Connect column buffers AIEX-A and AIEX-B to buffer valves, and the anion-exchange resin-containing column to the column ports of the FPLC. Adjust the general chromatographic parameters accordingly.
Start the AIEX program in the FPLC software and choose the equilibration volume for buffer A. Subsequently, load the sample onto the column, and elute the proteins with a linear gradient from 0% to 100% high-salt buffer. Collect 2-milliliter fractions during elution.
Analyze the eluted fractions after finishing the run.

Purificação de proteínas baseada em cromatografia de troca aniônica: uma técnica de separação para isolar uma proteína de interesse do lisado bacteriano dialisado com base na carga líquida

EoE Sub Articles

Calcium-Dependent Hydrophobic Interaction Chromatography: A Technique to Purify Calcium-Binding Proteins Based on Hydrophobic Interactions

To continue the protein purification, after the protein dialysis, add calcium chloride to the sample to a final concentration of 25 millimolar, which will facilitate binding of S100A12 to the resin in the next step. Then, filter the sample through a filter with a pour size of 0.45 microns.
Equilibrate HIC buffers and samples to 4 degrees Celsius. Next, connect column buffers HIC-A and B and the column, to the system and adjust the parameters.
Start the method to equilibrate the column with 1 to 2 column volumes of buffer HIC-A, and load the sample, and the &#39;wash unbound sample block&#39; when the UV signal reaches baseline level again.
Then, start elution with a calcium chelator-containing buffer EDTA. Collect 2 milliliters of peak fractions during elution.

Cromatografia de interação hidrofóbica dependente de cálcio: uma técnica para purificar proteínas de ligação ao cálcio com base em interações hidrofóbicas

Automated interação hidrofóbica Seleção coluna de cromatografia para uso na purificação de proteínas

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