3vki

Monoclinic Crystal Structure of Salmonella FlgA in closed form

spinqualitylabelsall models 3vki, resolution 2.30Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 3vki is a 4 chain structure with sequence from "bacillus_typhimurium"_loeffler_1892 "bacillus typhimurium" loeffler 1892. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Related: 3tee, 3vjp Gene: flgA ("Bacillus typhimurium" Loeffler 1892) Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [FLGA_SALTY] Involved in the assembly process of the P-ring formation. It may associate with FlgF on the rod constituting a structure essential for the P-ring assembly or may act as a modulator protein for the P-ring assembly. Publication Abstract from PubMed A periplasmic flagellar chaperone protein, FlgA, is required for P-ring assembly in bacterial flagella of taxa such as Salmonella enterica or Escherichia coli. The mechanism of chaperone-mediated P-ring formation is poorly understood. Here we present the open and closed crystal structures of FlgA from Salmonella enterica serovar Typhimurium, grown under different crystallization conditions. An intramolecular disulfide cross-linked form of FlgA caused a dominant negative effect on motility of the wild-type strain. Pull-down experiments support a specific protein-protein interaction between FlgI, the P-ring component protein, and the C-terminal domain of FlgA. Surface plasmon resonance and limited-proteolysis indicate that flexibility of the domain is reduced in the covalently closed form. These results show that the structural flexibility of the C-terminal domain of FlgA, which is related to the structural difference between the two crystal forms, is intrinsically associated with its molecular chaperone function in P-ring assembly. Structural flexibility of the periplasmic protein, FlgA, regulates flagellar P-ring assembly in Salmonella enterica.,Matsunami H, Yoon YH, Meshcheryakov VA, Namba K, Samatey FA Sci Rep. 2016 Jun 7;6:27399. doi: 10.1038/srep27399. PMID:27273476 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Flagellar protein 3D structures Flagellar proteins

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