1K09

Solution structure of BetaCore, A Designed Water Soluble Four-Stranded Antiparallel b-sheet Protein


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: The submitted conformers are those with no constraint violations greater than 0.5 angstroms for NOEs and 5 degrees for dihedrals. They are also the ones with best covalent geometry. 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

BetaCore, a designed water soluble four-stranded antiparallel beta-sheet protein.

Carulla, N.Woodward, C.Barany, G.

(2002) Protein Sci. 11: 1539-1551

  • DOI: 10.1110/ps.4440102

  • PubMed Abstract: 
  • BetaCore is a designed approximately 50-residue protein in which two BPTI-derived core modules, CM I and CM II, are connected by a 22-atom cross-link. At low temperature and pH 3, homo- and heteronuclear NMR data report a dominant folded ('f') confor ...

    BetaCore is a designed approximately 50-residue protein in which two BPTI-derived core modules, CM I and CM II, are connected by a 22-atom cross-link. At low temperature and pH 3, homo- and heteronuclear NMR data report a dominant folded ('f') conformation with well-dispersed chemical shifts, i, i+1 periodicity, numerous long-range NOEs, and slowed amide hydrogen isotope exchange patterns that is a four-stranded antiparallel beta-sheet with nonsymmetrical and specific association of CM I and CM II. BetaCore 'f' conformations undergo reversible, global, moderately cooperative, non-two-state thermal transitions to an equilibrium ensemble of unfolded 'u' conformations. There is a significant energy barrier between 'f' and 'u' conformations. This is the first designed four-stranded antiparallel beta-sheet that folds in water.


    Organizational Affiliation

    Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Core Module I
A
26Bos taurusN/A
Find proteins for P00974 (Bos taurus)
Go to UniProtKB:  P00974
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Core Module II
B
26Bos taurusN/A
Find proteins for P00974 (Bos taurus)
Go to UniProtKB:  P00974
Small Molecules
Modified Residues  5 Unique
IDChainsTypeFormula2D DiagramParent
CLG
Query on CLG
A
L-PEPTIDE LINKINGC10 H20 N4 O5LYS
ABA
Query on ABA
A, B
L-PEPTIDE LINKINGC4 H9 N O2ALA
CLH
Query on CLH
B
L-PEPTIDE LINKINGC10 H17 N3 O5LYS
NH2
Query on NH2
A, B
NON-POLYMERH2 N

--

MPT
Query on MPT
A, B
NON-POLYMERC3 H6 O2 S

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Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: The submitted conformers are those with no constraint violations greater than 0.5 angstroms for NOEs and 5 degrees for dihedrals. They are also the ones with best covalent geometry. 
  • Olderado: 1K09 Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-07-10
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance