Small ribosomal subunit protein bS1
UniProtKB accession: P0AG67
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Go to UniProtKB: P0AG67
UniProtKB description: Required for translation of most natural mRNAs except for leaderless mRNA (PubMed:12068815, PubMed:17376482, PubMed:24339747, PubMed:7003157, PubMed:9677288). Binds mRNA upstream of the Shine-Dalgarno (SD) sequence and helps it bind to the 30S ribosomal subunit; acts as an RNA chaperone to unfold structured mRNA on the ribosome but is not essential for mRNAs with strong SDs and little 5'-UTR structure, thus it may help fine-tune which mRNAs that are translated (PubMed:24339747). Unwinds dsRNA by binding to transiently formed ssRNA regions; binds about 10 nucleotides (PubMed:22908248). Has a preference for polypyrimidine tracts (PubMed:778845). Negatively autoregulates its own translation (PubMed:2120211).
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