1v19

2-KETO-3-DEOXYGLUCONATE KINASE FROM THERMUS THERMOPHILUS

spinqualitylabelsall models 1v19, resolution 2.30Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1v19 is a 2 chain structure with sequence from Thermus thermophilus HB8. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.3Å Ligands: DIO Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT, TOPSAN Function KDGK_THET8 Involved in the degradation of glucose via the semi-phosphorylative Entner-Doudoroff pathway. Catalyzes the phosphorylation of 2-keto-3-deoxygluconate (KDG) to produce 2-keto-3-deoxy-6-phosphogluconate (KDPG). 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 2-Keto-3-deoxygluconate kinase (KDGK) catalyzes the phosphorylation of 2-keto-3-deoxygluconate (KDG) to 2-keto-3-deoxy-6-phosphogluconate (KDGP). The genome sequence of Thermus thermophilus HB8 contains an open reading frame that has a 30% identity to Escherichia coli KDGK. The KDGK activity of T.thermophilus protein (TtKDGK) has been confirmed, and its crystal structure has been determined by the molecular replacement method and refined with two crystal forms to 2.3 angstroms and 3.2 angstroms, respectively. The enzyme is a hexamer organized as a trimer of dimers. Each subunit is composed of two domains, a larger alpha/beta domain and a smaller beta-sheet domain, similar to that of ribokinase and adenosine kinase, members of the PfkB family of carbohydrate kinases. Furthermore, the TtKDGK structure with its KDG and ATP analogue was determined and refined at 2.1 angstroms. The bound KDG was observed predominantly as an open chain structure. The positioning of ligands and the conservation of important catalytic residues suggest that the reaction mechanism is likely to be similar to that of other members of the PfkB family, including ribokinase. In particular, the Asp251 is postulated to have a role in transferring the gamma-phosphate of ATP to the 5'-hydroxyl group of KDG. Structure of Thermus thermophilus 2-Keto-3-deoxygluconate kinase: evidence for recognition of an open chain substrate.,Ohshima N, Inagaki E, Yasuike K, Takio K, Tahirov TH J Mol Biol. 2004 Jul 9;340(3):477-89. PMID:15210349 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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