IUBMB Enzyme Nomenclature


Accepted name: [ribosomal protein S5]-alanine N-acetyltransferase

Reaction: acetyl-CoA + an N-terminal L-alanyl-[S5 protein of 30S ribosome] = CoA + an N-terminal N-acetyl-L-alanyl-[S5 protein of 30S ribosome]

Other name(s): rimJ (gene name)

Systematic name: acetyl-CoA:[S5 protein of 30S ribosome]-L-alanine N-acetyltransferase

Comments: The enzyme, characterized from the bacterium Escherichia coli, is specific for protein S5, a component of the 30S ribosomal subunit. It also plays a role in maturation of the 30S ribosomal subunit. cf. EC, [ribosomal protein S18]-alanine N-acetyltransferase.

Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, CAS registry number:


1. Yoshikawa, A., Isono, S., Sheback, A. and Isono, K. Cloning and nucleotide sequencing of the genes rimI and rimJ which encode enzymes acetylating ribosomal proteins S18 and S5 of Escherichia coli K12. Mol. Gen. Genet. 209 (1987) 481-488. [PMID: 2828880]

2. Roy-Chaudhuri, B., Kirthi, N., Kelley, T. and Culver, G.M. Suppression of a cold-sensitive mutation in ribosomal protein S5 reveals a role for RimJ in ribosome biogenesis. Mol. Microbiol. 68 (2008) 1547-1559. [PMID: 18466225]

3. Roy-Chaudhuri, B., Kirthi, N. and Culver, G.M. Appropriate maturation and folding of 16S rRNA during 30S subunit biogenesis are critical for translational fidelity. Proc. Natl. Acad. Sci. USA 107 (2010) 4567-4572. [PMID: 20176963]

[EC created 1990 as EC, part transferred 2018 to EC]

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