1srr

CRYSTAL STRUCTURE OF A PHOSPHATASE RESISTANT MUTANT OF SPORULATION RESPONSE REGULATOR SPO0F FROM BACILLUS SUBTILIS

spinqualitylabelsall models 1srr, resolution 1.90Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1srr is a 3 chain structure with sequence from "vibrio_subtilis"_ehrenberg_1835 "vibrio subtilis" ehrenberg 1835. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: CA Gene: SPO0F ("Vibrio subtilis" Ehrenberg 1835) Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [SP0F_BACSU] Key element in the phosphorelay regulating sporulation initiation. Phosphorylation of spo0B during sporulation initiation. Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed BACKGROUND: Spo0F, a phosphotransferase containing an aspartyl pocket, is involved in the signaling pathway (phosphorelay) controlling sporulation in Bacillus subtilis. It belongs to the superfamily of bacterial response regulatory proteins, which are activated upon phosphorylation of an invariant aspartate residue. This phosphorylation is carried out in a divalent cation dependent reaction catalyzed by cognate histidine kinases. Knowledge of the Spo0F structure would provide valuable information that would enable the elucidation of its function as a secondary messenger in a system in which a phosphate is donated from Spo0F to Spo0B, the third of four main proteins that constitute the phosphorelay. RESULTS: We have determined the crystal structure of a Rap phosphatase resistant mutant, Spo0F Tyr13-->Ser, at 1.9 A resolution. The structure was solved by single isomorphous replacement and anomalous scattering techniques. The overall structural fold is (beta/alpha)5 and contains a central beta sheet. The active site of the molecule is formed by three aspartate residues and a lysine residue which come together at the C terminus of the beta sheet. The active site accommodates a calcium ion. CONCLUSIONS: The structural analysis reveals that the overall topology and metal-binding coordination at the active site are similar to those of the bacterial chemotaxis response regulator CheY. Structural differences between Spo0F and CheY in the vicinity of the active site provide an insight into how similar molecular scaffolds can be adapted to perform different biological roles by the alteration of only a few amino acid residues. These differences may contribute to the observed stability of the phosphorylated species of Spo0F, a feature demanded by its role as a secondary messenger within the phosphorelay system which controls sporulation. Crystal structure of a phosphatase-resistant mutant of sporulation response regulator Spo0F from Bacillus subtilis.,Madhusudan, Zapf J, Whiteley JM, Hoch JA, Xuong NH, Varughese KI Structure. 1996 Jun 15;4(6):679-90. PMID:8805550 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Phosphotransferase 3D structures Response regulator 3D structure

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