1BUS

SOLUTION CONFORMATION OF PROTEINASE INHIBITOR IIA FROM BULL SEMINAL PLASMA BY 1H NUCLEAR MAGNETIC RESONANCE AND DISTANCE GEOMETRY


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Submitted: 

wwPDB Validation   3D Report Full Report


This is version 2.0 of the entry. See complete history


Literature

Solution conformation of proteinase inhibitor IIA from bull seminal plasma by 1H nuclear magnetic resonance and distance geometry.

Williamson, M.P.Havel, T.F.Wuthrich, K.

(1985) J Mol Biol 182: 295-315

  • DOI: 10.1016/0022-2836(85)90347-x
  • Primary Citation of Related Structures:  
    1BUS, 2BUS

  • PubMed Abstract: 
  • A determination of the solution conformation of the proteinase inhibitor IIA from bull seminal plasma (BUSI IIA) is described. Two-dimensional nuclear Overhauser enhancement spectroscopy (NOESY) was used to obtain a list of 202 distance constraints between individually assigned hydrogen atoms of the polypeptide chain, to identify the positions of the three disulfide bridges, and to locate the single cis peptide bond ...

    A determination of the solution conformation of the proteinase inhibitor IIA from bull seminal plasma (BUSI IIA) is described. Two-dimensional nuclear Overhauser enhancement spectroscopy (NOESY) was used to obtain a list of 202 distance constraints between individually assigned hydrogen atoms of the polypeptide chain, to identify the positions of the three disulfide bridges, and to locate the single cis peptide bond. Supplementary geometric constraints were derived from the vicinal spin-spin couplings and the locations of certain hydrogen bonds, as determined by nuclear magnetic resonance (n.m.r.). Using a new distance geometry program (DISGEO) which is capable of computing all-atom structures for proteins the size of BUSI IIA, five conformers were computed from the NOE distance constraints alone, and another five were computed with the supplementary constraints included. Comparison of the different structures computed from the n.m.r. data among themselves and with the crystal structures of two homologous proteins shows that the global features of the conformation of BUSI IIA (i.e. the overall dimensions of the molecule and the threading of the polypeptide chain) were well-defined by the available n.m.r. data. In the Appendix, we describe a preliminary energy refinement of the structure, which showed that the constraints derived from the n.m.r. data are compatible with a low energy spatial structure.


    Related Citations: 
    • Secondary Structure in the Solution Conformation of the Proteinase Inhibitor IIA from Bull Seminal Plasma by Nuclear Magnetic Resonance
      Williamson, M.P., Marion, D., Wuthrich, K.
      (1984) J Mol Biol 173: 341
    • Assignment of the 1H Nuclear Magnetic Resonance Spectrum of the Proteinase Inhibitor IIA from Bull Seminal Plasma by Two-Dimensional Nuclear Magnetic Resonance at 500 Mhz
      Strop, P., Wider, G., Wuthrich, K.
      (1983) J Mol Biol 166: 641
    • Characterization of the Proteinase Inhibitor IIA from Bull Seminal Plasma by 1H Nuclear Magnetic Resonance. Stability, Amide Proton Exchange and Mobility of Aromatic Residues
      Strop, P., Wuthrich, K.
      (1983) J Mol Biol 166: 631

    Organizational Affiliation

    Department of Molecular Biosciences, Northwestern University, 2205 Tech Drive, Evanston, IL 60208-3500, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEINASE INHIBITOR IIAA57Bos taurusMutation(s): 0 
Gene Names: SPINK6
UniProt
Find proteins for P01001 (Bos taurus)
Explore P01001 
Go to UniProtKB:  P01001
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP01001
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
PCA
Query on PCA
A L-PEPTIDE LINKINGC5 H7 N O3GLN
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Submitted: 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1991-04-15
    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 2.0: 2019-12-25
    Changes: Derived calculations, Polymer sequence