2mpn

3D NMR structure of the transmembrane domain of the full-length inner membrane protein YgaP from Escherichia coli

spinqualitylabelsall models 2mpn Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2mpn is a 2 chain structure with sequence from Escherichia coli K-12. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: Solution NMR Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function YGAP_ECOLI Publication Abstract from PubMed The solution NMR structure of the alpha-helical integral membrane protein YgaP from Escherichia coli in mixed DHPC-7/LMPG micelles is presented. In these micelles, YgaP forms a homo-dimer with the two transmembrane helices being the dimer interface, while the N-terminal cytoplasmic domain comprises a rhodanese fold in accordance to its sequence homology to the rhodanese family of sulfurtransferases. The enzymatic sulfur-transfer activity of full-length YgaP as well as of the N-terminal rhodanese domain only was investigated performing series of titrations with sodium thiosulfate and potassium cyanide monitored by NMR and EPR. The data indicate the thiosulfate concentration-dependent addition of several sulfur atoms to the catalytic Cys63, which process can be reversed by the addition of potassium cyanide. The catalytic reaction induces thereby conformational changes within the rhodanese domain, as well as on the transmembrane alpha-helices of YgaP. These results provide insights into a potential mechanism of YgaP during the catalytic thiosulfate activity in vivo. Solution NMR Structure and Functional Analysis of the Integral Membrane Protein YgaP from E. coli.,Eichmann C, Tzitzilonis C, Bordignon E, Maslennikov I, Choe S, Riek R J Biol Chem. 2014 Jun 23. pii: jbc.M114.571935. PMID:24958726 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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