1bl5 | pdb_00001bl5

ISOCITRATE DEHYDROGENASE FROM E. COLI SINGLE TURNOVER LAUE STRUCTURE OF RATE-LIMITED PRODUCT COMPLEX, 10 MSEC TIME RESOLUTION

spinqualitylabelsall models 1bl5, resolution 2.50Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1bl5 is a 1 chain structure with sequence from Escherichia coli. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: AKG, MG, NAP Gene: ICD (Escherichia coli) Activity: Isocitrate dehydrogenase (NADP(+)), with EC number 1.1.1.42 Resources: FirstGlance, OCA, RCSB, PDBsum 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 structure of a rate-limited product complex formed during a single initial round of turnover by isocitrate dehydrogenase has been determined. Photolytic liberation of either caged substrate or caged cofactor and Laue X-ray data collection were used to visualize the complex, which has a minimum half-life of approximately 10 milliseconds. The experiment was conducted with three different photoreactive compounds, each possessing a unique mechanism leading to the formation of the enzyme-substrate (ES) complex. Photoreaction efficiency and subsequent substrate affinities and binding rates in the crystal are critical parameters for these experiments. The structure suggests that CO2 dissociation is a rapid event that may help drive product formation, and that small conformational changes may contribute to slow product release. Millisecond Laue structures of an enzyme-product complex using photocaged substrate analogs.,Stoddard BL, Cohen BE, Brubaker M, Mesecar AD, Koshland DE Jr Nat Struct Biol. 1998 Oct;5(10):891-7. PMID:9783749 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Isocitrate dehydrogenase

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