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University of South Bohemia

6 ARTICLES PUBLISHED IN JoVE

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Chemistry

A High-throughput-compatible FRET-based Platform for Identification and Characterization of Botulinum Neurotoxin Light Chain Modulators
Dejan Caglič 1, Kristin M. Bompiani 1, Michelle C. Krutein 1, Petr Čapek 1, Tobin J. Dickerson 1,2
1Department of Chemistry, The Scripps Research Institute, 2Worm Institute of Research and Medicine (WIRM), The Scripps Research Institute

The botulinum neurotoxin type A light chain (BoNT/A LC) is a metalloprotease that enters motor neurons, cleaves its substrate SNAP-25, and disrupts neurotransmission, thereby resulting in flaccid paralysis. Utilizing a high-throughput-compatible FRET-based assay, large libraries of small molecules can be screened for their impact on BoNT/A LC enzymatic activity.

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Biology

Practical Use of RNA Interference: Oral Delivery of Double-stranded RNA in Liposome Carriers for Cockroaches
Jia-Hsin Huang 1, Yun Liu 1, Yu-Hsien Lin 1,2,3, Xavier Belles 4, How-Jing Lee 1
1Department of Entomology, National Taiwan University, 2Biology Centre, Institute of Entomology, Czech Academy of Sciences, 3Faculty of Science, University of South Bohemia, 4Institute of Evolutionary Biology, CSIC-UPF

This manuscript demonstrates the depletion of gene expression in the midgut of the German cockroach through oral ingestion of double-stranded RNA encapsulated in liposomes.

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JoVE Journal

Isolation of F1-ATPase from the Parasitic Protist Trypanosoma brucei
Ondřej Gahura 1, Alena Zíková 1,2
1Biology Centre, Czech Academy of Science, Institute of Parasitology, 2Faculty of Science, University of South Bohemia

This protocol describes the purification of F1-ATPase from the cultured insect stage of Trypanosoma brucei. The procedure yields a highly pure, homogeneous, and active complex suitable for structural and enzymatic studies.

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Environment

BtM, a Low-cost Open-source Datalogger to Estimate the Water Content of Nonvascular Cryptogams
María Leo *1, Angel Lareo *2, Carlos Garcia-Saura 2, Joaquín Hortal 3,4, Nagore G. Medina 5
1Real Jardín Botánico (CSIC-RJB), 2Grupo de Neurocomputación Biológica, Dpto. de Ingeniería Informática, Escuela Politécnica Superior, Universidad Autónoma de Madrid, 3Department of Biogeography and Global Change, Museo Nacional de Ciencias Naturales (MNCN-CSIC), 4Centre for Ecology, Evolution and Environmental Changes (cE3c), Faculdade de Ciências da Universidade de Lisboa, 5Department of Botany, Faculty of Science, University of South Bohemia

We present a simple and cost-effective method to build an open-source datalogger that measures the conductance of nonvascular cryptogams together with the environmental temperature and humidity. We describe the hardware design of the datalogger and provide step-by-step assembly instructions, the list of required open-source logging software, the code to run the datalogger, and a calibration protocol.

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Environment

A Low-Cost Method of Measuring the In Situ Primary Productivity of Periphyton Communities of Lentic Waters
Kateřina Čapková 1,3, Tomáš Bešta 1, Jan Mareš 1,2, Petr Čapek 2, Klára Řeháková 1,3
1Biology Centre of the CAS, Institute of Hydrobiology, 2Faculty of Science, University of South Bohemia, 3Institute of Botany AS CR

Presented here is a cost-effective and transportable method/facility for measuring the primary productivity of microbial mats under actual in situ environmental temperature and light conditions. The experimental setup is based on widely available materials and can be used under various conditions while offering the advantages of laboratory-based models.

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Chemistry

Tracing de novo Lipids using Stable Isotope Labeling LC-TIMS-TOF MS/MS
Katherine D. Castro 1, Lilian Valadares Tose 1, Matthew Willetts 2, Melvin A. Park 2, Marcela Nouzova 3, Fernando G. Noriega 4,5, Francisco Fernandez-Lima 1,6
1Deparment of Chemistry and Biochemistry, Florida International University, 2Bruker Daltonics Inc., 3Institute of Parasitology, Biology Centre CAS, 4Department of Biological Sciences, Florida International University, 5Department of Parasitology, University of South Bohemia, 6Biomolecular Sciences Institute, Florida International University

Presented here is a method for screening lipid structures through stable isotope labeling by using their retention time, mobility, and fragmentation.

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