5ywd | pdb_00005ywd

Structure of pancreatic ATP-sensitive potassium channel bound with Mg-ADP (focused refinement of SUR1 ABC transporter module at 4.22A)

Loading... Status: waiting for Mol* initialization Structural highlights 5ywd is a 1 chain structure with sequence from Golden hamster. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: ADP, MG Gene: Abcc8 (Golden hamster) Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed ATP-sensitive potassium channels (KATP) are energy sensors on the plasma membrane. By sensing the intracellular ADP/ATP ratio of beta-cells, pancreatic KATP channels control insulin release and regulate metabolism at the whole body level. They are implicated in many metabolic disorders and diseases and are therefore important drug targets. Here, we present three structures of pancreatic KATP channels solved by cryo-electron microscopy (cryo-EM), at resolutions ranging from 4.1 to 4.5 A. These structures depict the binding site of the antidiabetic drug glibenclamide, indicate how Kir6.2 (inward-rectifying potassium channel 6.2) N-terminus participates in the coupling between the peripheral SUR1 (sulfonylurea receptor 1) subunit and the central Kir6.2 channel, reveal the binding mode of activating nucleotides, and suggest the mechanism of how Mg-ADP binding on nucleotide binding domains (NBDs) drives a conformational change of the SUR1 subunit. Ligand binding and conformational changes of SUR1 subunit in pancreatic ATP-sensitive potassium channels.,Wu JX, Ding D, Wang M, Kang Y, Zeng X, Chen L Protein Cell. 2018 Mar 28. pii: 10.1007/s13238-018-0530-y. doi:, 10.1007/s13238-018-0530-y. PMID:29594720 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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