2f9t

Structure of the type III CoaA from Pseudomonas aeruginosa

spinqualitylabelsall models 2f9t, resolution 2.20Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2f9t is a 2 chain structure with sequence from Pseae. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. NonStd Res: MSE Related: 2f9w Activity: Pantothenate kinase, with EC number 2.7.1.33 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [COAX_PSEAE] Catalyzes the phosphorylation of pantothenate (Pan), the first step in CoA biosynthesis. Can utilize a wide range of phosphoryl donors other than ATP, and does not discriminate between purine- and pyrimidine-based nucleotides or deoxynucleotides. Is responsible for the resistance of P.aeruginosa to the pantothenamide antibiotics, since it can not bind and phosphorylate these pantothenate analogs. 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 Three distinct isoforms of pantothenate kinase (CoaA) in bacteria catalyze the first step in coenzyme A biosynthesis. The structures of the type II (Staphylococcus aureus, SaCoaA) and type III (Pseudomonas aeruginosa, PaCoaA) enzymes reveal that they assemble nearly identical subunits with actin-like folds into dimers that exhibit distinct biochemical properties. PaCoaA has a fully enclosed pantothenate binding pocket and requires a monovalent cation to weakly bind ATP in an open cavity that does not interact with the adenine nucleotide. Pantothenate binds to an open pocket in SaCoaA that strongly binds ATP by using a classical P loop architecture coupled with specific interactions with the adenine moiety. The PaCoaA*Pan binary complex explains the resistance of bacteria possessing this isoform to the pantothenamide antibiotics, and the similarity between SaCoaA and human pantothenate kinase 2 explains the molecular basis for the development of the neurodegenerative phenotype in three mutations in the human protein. Prokaryotic type II and type III pantothenate kinases: The same monomer fold creates dimers with distinct catalytic properties.,Hong BS, Yun MK, Zhang YM, Chohnan S, Rock CO, White SW, Jackowski S, Park HW, Leonardi R Structure. 2006 Aug;14(8):1251-61. PMID:16905099 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Pantothenate kinase 3D structures

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