7Z06 image
Entry Detail
PDB ID:
7Z06
Title:
Structure of YwlG (Q2FF14) from Staphylococcus aureus
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2022-02-22
Release Date:
2022-09-21
Method Details:
Experimental Method:
Resolution:
1.74 Å
R-Value Free:
0.27
R-Value Work:
0.25
Space Group:
P 1 21 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:UPF0340 protein SAUSA300_2068
Chain IDs:A, B, C, D, E, F
Chain Length:196
Number of Molecules:6
Biological Source:Staphylococcus aureus
Ligand Molecules
Primary Citation
Bidirectional sequestration between a bacterial hibernation factor and a glutamate metabolizing protein.
Proc.Natl.Acad.Sci.USA 119 e2207257119 e2207257119 (2022)
PMID: 36122228 DOI: 10.1073/pnas.2207257119

Abstact

Bacterial hibernating 100S ribosomes (the 70S dimers) are excluded from translation and are protected from ribonucleolytic degradation, thereby promoting long-term viability and increased regrowth. No extraribosomal target of any hibernation factor has been reported. Here, we discovered a previously unrecognized binding partner (YwlG) of hibernation-promoting factor (HPF) in the human pathogen Staphylococcus aureus. YwlG is an uncharacterized virulence factor in S. aureus. We show that the HPF-YwlG interaction is direct, independent of ribosome binding, and functionally linked to cold adaptation and glucose metabolism. Consistent with the distant resemblance of YwlG to the hexameric structures of nicotinamide adenine dinucleotide (NAD)-specific glutamate dehydrogenases (GDHs), YwlG overexpression can compensate for a loss of cellular GDH activity. The reduced abundance of 100S complexes and the suppression of YwlG-dependent GDH activity provide evidence for a two-way sequestration between YwlG and HPF. These findings reveal an unexpected layer of regulation linking the biogenesis of 100S ribosomes to glutamate metabolism.

Legend

Protein

Chemical

Disease

Primary Citation of related structures