30S ribosome-binding factor

UniProtKB accession:  P0A7G2

Grouped By:  Matching UniProtKB accession

UniProtKB description:  One of at least 4 proteins (Era, RbfA, RimM and RsgA/YjeQ) that assist in the late maturation steps of the functional core of the 30S subunit. Essential for efficient processing of pre-16S rRNA (PubMed:9422595, PubMed:12963368, PubMed:12628255). Probably part of the 30S subunit prior to or during the final step in the processing of 16S free 30S ribosomal subunits. Probably interacts with the 5'-terminal helix region of 16S rRNA (PubMed:7535280). Has affinity for free ribosomal 30S subunits but not for 70S ribosomes (PubMed:7535280, PubMed:12963368). Overexpression suppresses a cold-sensitive C23U 16S rRNA mutation (PubMed:7535280). Overexpression decreases the lag time following cold-shock by about half, leading to faster adaptation and increased protein synthesis (PubMed:8898389). Overexpression also partially suppresses a rimM deletion mutant and partially rescues its 16S rRNA processing deficiency (PubMed:9422595). Its function overlaps that of Era in ribosome biogenesis (PubMed:16825789). A number of RbfA mutants suppress RsgA/YjeQ deletions, in all cases less RbfA is bound to the 30S ribosome (PubMed:21102555). Released from 30S ribosomes by RsgA; stimulates the ribosome-associated GTPase activity of RsgA (PubMed:21102555).