HIGH-AFFINITY RNA LIGANDS TO ESCHERICHIA-COLI RIBOSOMES AND RIBOSOMAL-PROTEIN S1 - COMPARISON OF NATURAL AND UNNATURAL BINDING-SITES

被引：103

作者：

RINGQUIST, S

JONES, T

SNYDER, EE

GIBSON, T

BONI, I

GOLD, L

机构：

[1] UNIV COLORADO, BOULDER, CO 80309 USA

[2] MM SHEMYAKIN INST BIOORGAN CHEM, MOSCOW 117871, RUSSIA

来源：

BIOCHEMISTRY | 1995年 / 34卷 / 11期

关键词：

D O I：

10.1021/bi00011a019

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

High-affinity RNA ligands were generated against intact 30S ribosomes, S1-depleted 30S ribosomes, and purified ribosomal protein S1. Sequence analysis indicated two classes of ligand: unstructured RNAs containing a Shine-Dalgarno sequence and structured RNAs containing a pseudoknot. The Shine-Dalgarno-containing Ligands were generated against S1-depleted 30S ribosomes but, surprisingly, not against intact 30S ribosomes or ribosomal protein S1. In contrast, pseudoknot-containing ligands were generated against intact ribosomes as well as purified S1 protein. The two classes of ligand exhibited specificity for their respective targets, as well as conserved sequence and secondary structure reminiscent of naturally occurring, cis-acting mRNA elements.

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页码：3640 / 3648

页数：9

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