Name: monitoring equilibrium changes in rna structure by 'peroxidative' and 'oxidative' hydroxyl radical footprinting
Uploaded: 2011-10-17T13:00:00
Description: Watch this Scientific Journal Video about Monitoring Equilibrium Changes in RNA Structure by 'Peroxidative' and 'Oxidative' Hydroxyl Radical Footprinting at JoVE.com

이 작품은 건강 RO1 - GM085130 국립 연구소와 국립 과학 재단 (National Science Foundation) MCB0929394에서 보조금에 의해 지원되었다. 우리는 그녀의 환대와 그녀의 실험실에서 영화 우리에게 허용에 대한 박사 메리언 슈미트 감사합니다.

1. Footprinting의 시약의 준비 <ol><li> 100 MM 나트륨 cacodylate, 1 ㎜ EDTA (에틸렌 다이아 민 테트라 초산), 1 M KCl을 포함 10X 반응 버퍼를 준비합니다. 7.4로 산도를 조정합니다. 0.2 μm의 아세테이트 필터 장치 (Nalgene)를 사용하여 버퍼를 필터링합니다. 비고가 : 10X 버퍼에 직접 pipet의 RNA를하지 않습니다. </li><li> 로 표 1에 표시된 각 반응에 대한 적정 반응 믹스를 준비합니다. 적정 믹스의 볼륨 (원하는 농도?...

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히드록실 급진 footprinting는 핵산의 용매 접근 표면적을 평가하는 유용한 도구입니다. 차 구조 14 질적 및 양적 형성은 이러한 이온 종류와 농도, 산도, 온도, 바인딩 단백질이나 접는 공동 요인으로 매개 변수의 함수로 다음 수 있습니다. 정직하고 저렴한 프로토콜과 그 결과 용매 접근성 및 단일 뉴클레오 티드 수준에서 접는 정보의 강력한 조합이 방법은 매우 매력적합니다. 전통적 • OH?...

<table border="1">
	<tbody>
		<tr>
			<th>Name</th>
			<th>Company</th>
			<th>Cat#</th>
		</tr>
		<tr>
			<td>Sodium Cacodylate
			(Caution! Toxic)	 	
			</td>
			<td>Sigma</td>
			<td>C4945-25g</td>
		</tr>
		<tr>
			<td>EDTA (0.5 M)</td>
			<td>Ambion</td>
			<td>AM9260G</td>
		</tr>
		<tr>
			<td>DEPC treated water</td>
			<td>Ambion</td>
			<td>AM9915G</td>
		</tr>
		<tr>
			<td>Sodium Acetate (3 M)</td>
			<td>Ambion</td>
			<td>AM9740</td>
		</tr>
		<tr>
			<td>MgCl2 (1 M)</td>
			<td>Ambion</td>
			<td>AM9530G</td>
		</tr>
		<tr>
			<td>Urea</td>
			<td>Ambion</td>
			<td>AM9902</td>
		</tr>
		<tr>
			<td>Sodium Citrate</td>
			<td>Sigma</td>
			<td>W302600</td>
		</tr>
		<tr>
			<td>tRNA</td>
			<td>Sigma</td>
			<td>R-7876</td>
		</tr>
		<tr>
			<td>Sodium-L-ascorbate</td>
			<td>Sigma</td>
			<td>A7631-25g</td>
		</tr>
		<tr>
			<td>Fe(NH4)2(SO4)2 . 6 H2O</td>
			<td>Sigma</td>
			<td>F1543-500g</td>
		</tr>
		<tr>
			<td>RNase T1</td>
			<td>Fermentas</td>
			<td>EN0541</td>
		</tr>
		<tr>
			<td>Hydrogen Peroxide (30%)</td>
			<td>Sigma</td>
			<td>349887</td>
		</tr>
	</tbody>
</table>

monitoring equilibrium changes in rna structure by 'peroxidative' and 'oxidative' hydroxyl radical footprinting

RNA의 분자 생물학에서 필수적인 역할을한다. 유전 정보를 전달하는 이외에, RNA는 레귤레이터, 바인더 또는 촉매와 같은 특정 생물 학적 역할을 수행 고유한 삼차 구조로 접을 수 있습니다. 차 접촉 형성에 관한 정보는 RNA 분자의 기능을 이해하는 것이 필수적입니다. 히드록실 래디 칼 (• OH)가 높은 반응과 작은 크기로 인해 핵산의 구조 독특한 프로브입니다. 1 footprinting 프로브로 사용하면, 히드록실 래디 칼과 함께 DNA 1과 RNA 2의 phosphodiester 백본의 용매 접근 표면을지도 단일 뉴클레오 티드 해상도만큼 괜찮아요. 히드록실 라디칼 footprinting는 DNA - 단백질 1과 RNA - 단백질 단지의 예 분자간 접촉면 내에 세포핵을 식별하는 데 사용할 수 있습니다. 평형 3 번과 4 번 전환 운동은 soluti의 함수로 수산기 라디칼 footprinting을 실시하여 확인할 수 있습니다에서 변수 또는 시간을 각각. footprinting의 주요 기능은 프로브에게 노출 제한 (예 : &#39;싱글 히트 속도론&#39;) 폴리머의 각 염기의 유니폼을 샘플링 결과입니다 5. 이 비디오 문서에서, 우리는 RNA 샘플의 준비와 MG (II) - 중재 접는 등온선의 결정을 설명하기 Tetrahymena ribozyme의 P4 - P6 도메인을 사용합니다. 우리는 H 2 O 2 (우리가이 &#39;peroxidative&#39;프로토콜 호출)와 자연스럽게 녹아 O 2를 사용하는 귀중한하지만, 널리 알려진 아니라, 대안을 (우리가 부르는 &#39;가 필요합니다 잘 알려진 수산기 라디칼 footprinting 프로토콜의 사용을 설명 산화 &#39;프로토콜). 데이터 감소, 변환 및 분석 절차의 개요가 제공됩니다.

Watch this Scientific Journal Video about Monitoring Equilibrium Changes in RNA Structure by 'Peroxidative' and 'Oxidative' Hydroxyl Radical Footprinting at JoVE.com

Monitoring Equilibrium Changes in RNA Structure by 'Peroxidative' and 'Oxidative' Hydroxyl Radical Footprinting

이 프로토콜은 MG (II) - 종속 히드록실 급진 footprinting 두 가지 방법으로 RNA 차 구조 형성을 계량하는 방법을 설명합니다.

&#39;Peroxidative&#39;와 &#39;산화&#39;히드록실 급진적 Footprinting에 의해 RNA 구조의 모니터링 평형 변경

RNA molecules play an essential role in biology. In addition to transmitting genetic information, RNA can fold into unique tertiary structures fulfilling ...

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