4yx1

From Proteopedia

SpaO(SPOA2)

PDB ID 4yx1

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Structural highlights

4yx1 is a 2 chain structure with sequence from Salmonella enterica subsp. enterica serovar Typhimurium str. LT2. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

SPAO_SALTY Involved in a secretory pathway responsible for the surface presentation of determinants needed for the entry of Salmonella species into mammalian cells.

Publication Abstract from PubMed

Translocating proteins across the double membrane of Gram-negative bacteria, type III secretion systems (T3SS) occur in two evolutionarily related forms: injectisomes, delivering virulence factors into host cells, and the flagellar system, secreting the polymeric filament used for motility. While both systems share related elements of a cytoplasmic sorting platform that facilitates the hierarchical secretion of protein substrates, its assembly and regulation remain unclear. Here we describe a module mediating the assembly of the sorting platform in both secretion systems, and elucidate the structural basis for segregation of homologous components among these divergent T3SS subtypes sharing a common cytoplasmic milieu. These results provide a foundation for the subtype-specific assembly of T3SS sorting platforms and will support further mechanistic analysis and anti-virulence drug design.

A common assembly module in injectisome and flagellar type III secretion sorting platforms.,Notti RQ, Bhattacharya S, Lilic M, Stebbins CE Nat Commun. 2015 May 21;6:7125. doi: 10.1038/ncomms8125. PMID:25994170^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Notti RQ, Bhattacharya S, Lilic M, Stebbins CE. A common assembly module in injectisome and flagellar type III secretion sorting platforms. Nat Commun. 2015 May 21;6:7125. doi: 10.1038/ncomms8125. PMID:25994170 doi:http://dx.doi.org/10.1038/ncomms8125