1pcp

SOLUTION STRUCTURE OF A TREFOIL-MOTIF-CONTAINING CELL GROWTH FACTOR, PORCINE SPASMOLYTIC PROTEIN

spinqualitylabelsall models 1pcp Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1pcp is a 1 chain structure with sequence from Sus scrofa. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: Solution NMR, 19 models Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT 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 porcine spasmolytic protein (pSP) is a 106-residue cell growth factor that typifies a family of eukaryotic proteins that contain at least one copy of an approximately 40-amino acid protein domain known as the trefoil motif. In fact, pSP contains two highly homologous trefoil domains. We have determined the complete three-dimensional solution structure of pSP by using a combination of two- and three-dimensional 1H NMR spectroscopy and distance geometry calculations. pSP is a relatively elongated molecule, consisting of two compact globular domains joined via a small interface. The protein's two trefoil domains adopt the same tertiary structure and contain a core C-terminal two-stranded antiparallel beta-sheet, preceded by a 6-residue helix that packs against the N-terminal beta-strand. The remainder of the protein backbone is taken up by two short loops that lie on either side of the beta-hairpin and are linked by an extended region that wraps around the C-terminal beta-strand. The topology of the protein backbone observed for the trefoil domains in pSP represents an unusual polypeptide fold. A striking feature of both trefoil domains is a surface patch formed from five conserved residues that have no obvious structural role. The two patches are located at the far ends of the protein molecule, and we propose that these residues form at least part of the receptor binding site, or sites, on pSP. Solution structure of a trefoil-motif-containing cell growth factor, porcine spasmolytic protein.,Carr MD, Bauer CJ, Gradwell MJ, Feeney J Proc Natl Acad Sci U S A. 1994 Mar 15;91(6):2206-10. PMID:8134374 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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