6wv4

Human VKOR C43S with warfarinHuman VKOR C43S with warfarin

Structural highlights 6wv4 is a 1 chain structure with sequence from Aequorea victoria and Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 3.012Å Ligands: , Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Disease VKOR1_HUMAN Prediction of resistance to vitamin K antagonists;Prediction of toxicity or dose selection of vitamin K antagonists;Hereditary combined deficiency of vitamin K-dependent clotting factors. The disease is caused by variants affecting the gene represented in this entry. The disease is caused by variants affecting the gene represented in this entry. Function K0NYR4_9CAUD GFP_AEQVI Energy-transfer acceptor. Its role is to transduce the blue chemiluminescence of the protein aequorin into green fluorescent light by energy transfer. Fluoresces in vivo upon receiving energy from the Ca(2+)-activated photoprotein aequorin.VKOR1_HUMAN Involved in vitamin K metabolism. Catalytic subunit of the vitamin K epoxide reductase (VKOR) complex which reduces inactive vitamin K 2,3-epoxide to active vitamin K. Vitamin K is required for the gamma-carboxylation of various proteins, including clotting factors, and is required for normal blood coagulation, but also for normal bone development. Publication Abstract from PubMed Vitamin K antagonists are widely used anticoagulants targeting vitamin K epoxide reductases (VKOR), a family of integral membrane enzymes. To elucidate their catalytic cycle and inhibitory mechanism, here we report eleven x-ray crystal structures of human VKOR and pufferfish VKOR-like with substrates and antagonists in different redox states. Substrates entering the active site in a partially oxidized state form a cysteine adduct that induces an open-to-closed conformational change, triggering reduction. Binding and catalysis is facilitated by hydrogen-bonding interactions in a hydrophobic pocket. The antagonists bind specifically to the same hydrogen-bonding residues and induce a similar closed conformation. Thus, vitamin K antagonists act through mimicking the key interactions and conformational changes required for the VKOR catalytic cycle. Structural basis of antagonizing the vitamin K catalytic cycle for anticoagulation.,Liu S, Li S, Shen G, Sukumar N, Krezel AM, Li W Science. 2020 Nov 5. pii: science.abc5667. doi: 10.1126/science.abc5667. PMID:33154105 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Green Fluorescent Protein 3D structures

spinqualitylabelsall models 6wv4, resolution 3.01Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image