Rqc2 homolog RqcH

UniProtKB accession:  A0A0H3JV08

Grouped By:  Matching UniProtKB accession

UniProtKB description:  Key component of the ribosome quality control system (RQC), a ribosome-associated complex that mediates the extraction of incompletely synthesized nascent chains from stalled ribosomes and their subsequent degradation. RqcH recruits Ala-charged tRNA, and with RqcP directs the elongation of stalled nascent chains on 50S ribosomal subunits, leading to non-templated C-terminal alanine extensions (Ala tail). The Ala tail promotes nascent chain degradation. May add between 1 and at least 8 Ala residues. Binds to stalled 50S ribosomal subunits.