1PCP

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


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Submitted: 19 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Solution structure of a trefoil-motif-containing cell growth factor, porcine spasmolytic protein.

Carr, M.D.Bauer, C.J.Gradwell, M.J.Feeney, J.

(1994) Proc Natl Acad Sci U S A 91: 2206-2210

  • DOI: https://doi.org/10.1073/pnas.91.6.2206
  • Primary Citation of Related Structures:  
    1PCP

  • PubMed Abstract: 

    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.


  • Organizational Affiliation

    Laboratory of Molecular Structure, National Institute for Medical Research, London, England.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
PORCINE SPASMOLYTIC PROTEIN106Sus scrofaMutation(s): 0 
UniProt
Find proteins for P01359 (Sus scrofa)
Explore P01359 
Go to UniProtKB:  P01359
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP01359
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Submitted: 19 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1994-05-31
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-11-29
    Changes: Derived calculations, Other
  • Version 1.4: 2024-11-20
    Changes: Data collection, Database references, Structure summary