2gz3

Structure of Aspartate Semialdehyde Dehydrogenase (ASADH) from Streptococcus pneumoniae complexed with NADP and aspartate-semialdehyde

spinqualitylabelsall models 2gz3, resolution 2.10Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2gz3 is a 4 chain structure with sequence from Streptococcus pneumoniae. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.1Å Ligands: AS2, NAP Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function A0A0H2UPS5_STRPN Catalyzes the NADPH-dependent formation of L-aspartate-semialdehyde (L-ASA) by the reductive dephosphorylation of L-aspartyl-4-phosphate.[HAMAP-Rule:MF_02121] 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 Aspartate-beta-semialdehyde dehydrogenase (ASADH) catalyzes a critical branch point transformation in amino acid bio-synthesis. The products of the aspartate pathway are essential in microorganisms, and this entire pathway is absent in mammals, making this enzyme an attractive target for antibiotic development. The first structure of an ASADH from a Gram-positive bacterium, Streptococcus pneumoniae, has now been determined. The overall structure of the apoenzyme has a similar fold to those of the Gram-negative and archaeal ASADHs but contains some interesting structural variations that can be exploited for inhibitor design. Binding of the coenzyme NADP, as well as a truncated nucleotide analogue, into an alternative conformation from that observed in Gram-negative ASADHs causes an enzyme domain closure that precedes catalysis. The covalent acyl-enzyme intermediate was trapped by soaking the substrate into crystals of the coenzyme complex, and the structure of this elusive intermediate provides detailed insights into the catalytic mechanism. Examination of key intermediates in the catalytic cycle of aspartate-beta-semialdehyde dehydrogenase from a gram-positive infectious bacteria.,Faehnle CR, Le Coq J, Liu X, Viola RE J Biol Chem. 2006 Oct 13;281(41):31031-40. Epub 2006 Aug 8. PMID:16895909 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Aspartate-semialdehyde dehydrogenase 3D structures

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