2cmg

Crystal Structure of Spermidine Synthase from Helicobacter Pylori

spinqualitylabelsall models 2cmg, resolution 2.00Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2cmg is a 2 chain structure with sequence from Campylobacter pylori. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Related: 2cmh Activity: Spermidine synthase, with EC number 2.5.1.16 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [SPEE_HELPY] Catalyzes the production of spermidine from putrescine and decarboxylated S-adenosylmethionine (dcSAM), which serves as an aminopropyl donor. 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 Spermidine synthase (putrescine aminopropyltransferase, PAPT) catalyzes the transfer of the aminopropyl group from decarboxylated S-adenosylmethionine to putrescine during spermidine biosynthesis. Helicobacter pylori PAPT (HpPAPT) has a low sequence identity with other PAPTs and lacks the signature sequence found in other PAPTs. The crystal structure of HpPAPT, determined by multiwavelength anomalous dispersion, revealed an N-terminal beta-stranded domain and a C-terminal Rossmann-like domain. Structural comparison with other PAPTs showed that HpPAPT has a unique binding pocket between two domains, numerous non-conserved residues, a less acidic electrostatic surface potential, and a large buried space within the structure. HpPAPT lacks the gatekeeping loop that facilitates substrate binding in other PAPTs. PAPTs are essential for bacterial cell viability; thus, HpPAPT may be a potential antimicrobial drug target for H. pylori owing to its characteristic PAPT sequence and distinct conformation. Crystal structure of Helicobacter pylori spermidine synthase: a Rossmann-like fold with a distinct active site.,Lu PK, Tsai JY, Chien HY, Huang H, Chu CH, Sun YJ Proteins. 2007 May 15;67(3):743-54. PMID:17357156 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Spermidine synthase 3D structures

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