Putative ribosome biogenesis GTPase RsgA - P39286 (RSGA_ECOLI)


Protein Feature View of PDB entries mapped to a UniProtKB sequence  

  • Number of PDB entries for P39286: 6
May play a role in 30S ribosomal subunit biogenesis. Unusual circulary permuted GTPase that catalyzes rapid hydrolysis of GTP with a slow catalytic turnover. Dispensible for viability, but important for overall fitness. The intrinsic GTPase activity is stimulated by the presence of 30S (160-fold increase in kcat) or 70S (96 fold increase in kcat) ribosomes (PubMed:14973029). The GTPase is inhibited by aminoglycoside antibiotics such as neomycin and paromycin (PubMed:15466596) streptomycin and spectinomycin (PubMed:15828870). This inhibition is not due to competition for binding sites on the 30S or 70S ribosome (PubMed:15828870). UniProt
Pathway Maps
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Subunit Structure
Monomer (Probable). All of the protein is associated with ribosomes; the ratio is substoichiometric at 1:200 RsgA/ribosome. Association is tightest with the 30S subunit in the presence of the non-hydrolyzable GTP analog GMP-PNP. UniProt
The knuckle-like cysteine cluster domain resembles the Zn-knuckle domain that is found in the nucleocapsid protein from HIV-1 virus, suggesting that it may bind RNA. UniProt
  • Other Gene names: rsgA, engC, yjeQ, b4161, JW4122
This protein in other organisms (by gene name):
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The PDB to UniProt mapping is based on the data provided by the EBI SIFTS project. See also Velankar et al., Nucleic Acids Research 33, D262-265 (2005).
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