1thf | pdb_00001thf

CYCLASE SUBUNIT OF IMIDAZOLEGLYCEROLPHOSPHATE SYNTHASE FROM THERMOTOGA MARITIMA

spinqualitylabelsall models 1thf, resolution 1.45Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1thf is a 1 chain structure with sequence from Atcc 43589. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: PO4 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [HIS6_THEMA] IGPS catalyzes the conversion of PRFAR and glutamine to IGP, AICAR and glutamate. The HisF subunit catalyzes the cyclization activity that produces IGP and AICAR from PRFAR using the ammonia provided by the HisH subunit.[HAMAP-Rule:MF_01013] 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 The atomic structures of two proteins in the histidine biosynthesis pathway consist of beta/alpha barrels with a twofold repeat pattern. It is likely that these proteins evolved by twofold gene duplication and gene fusion from a common half-barrel ancestor. These ancestral domains are not visible as independent domains in the extant proteins but can be inferred from a combination of sequence and structural analysis. The detection of subdomain structures may be useful in efforts to search genome sequences for functionally and structurally related proteins. Structural evidence for evolution of the beta/alpha barrel scaffold by gene duplication and fusion.,Lang D, Thoma R, Henn-Sax M, Sterner R, Wilmanns M Science. 2000 Sep 1;289(5484):1546-50. PMID:10968789 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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