1CIR

COMPLEX OF TWO FRAGMENTS OF CI2 [(1-40)(DOT)(41-64)]


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Submitted: 20 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Towards the complete structural characterization of a protein folding pathway: the structures of the denatured, transition and native states for the association/folding of two complementary fragments of cleaved chymotrypsin inhibitor 2. Direct evidence for a nucleation-condensation mechanism

Neira, J.L.Davis, B.Ladurner, A.G.Buckle, A.M.Gay Gde, P.Fersht, A.R.

(1996) Structure 1: 189-208

  • DOI: 10.1016/s1359-0278(96)00031-4
  • Primary Citation of Related Structures:  
    1CIQ, 1CIR

  • PubMed Abstract: 
  • Single-module proteins, such as chymotrypsin inhibitor 2 (CI2), fold as a single cooperative unit. To solve its folding pathway, we must characterize, under conditions that favour folding, its denatured state, its transition state, and its final folded structure ...

    Single-module proteins, such as chymotrypsin inhibitor 2 (CI2), fold as a single cooperative unit. To solve its folding pathway, we must characterize, under conditions that favour folding, its denatured state, its transition state, and its final folded structure. To obtain a "denatured state' that can readily be thus characterized, we have used a trick of cleaving CI2 into two complementary fragments that associate and fold in a similar way to intact protein.


    Related Citations: 
    • The Structure of the Transition State for the Association of Two Fragments of the Barley Chymotrypsin Inhibitor-2 to Generate Native-Like Protein: Implications for Mechanisms of Protein Folding
      De Prat Gay, G., Ruiz-Sanz, J., Davis, B., Fersht, A.R.
      (1994) Proc Natl Acad Sci U S A 91: 10943
    • Generation of a Family of Protein Fragments for Structure-Folding Studies. 1. Folding Complementation of Two Fragments of Chymotrypsin Inhibitor-2 Formed by Cleavage at its Unique Methionine Residue
      De Prat Gay, G., Fersht, A.R.
      (1994) Biochemistry 33: 7957

    Organizational Affiliation

    MRC Unit for Protein Function and Design, Cambridge Centre for Protein Engineering, UK.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
CHYMOTRYPSIN INHIBITOR 2A40Hordeum vulgareMutation(s): 0 
UniProt
Find proteins for P01053 (Hordeum vulgare)
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Go to UniProtKB:  P01053
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP01053
Protein Feature View
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  • Reference Sequence

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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
CHYMOTRYPSIN INHIBITOR 2B24Hordeum vulgareMutation(s): 0 
UniProt
Find proteins for P01053 (Hordeum vulgare)
Explore P01053 
Go to UniProtKB:  P01053
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP01053
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
HSE
Query on HSE
A L-PEPTIDE LINKINGC4 H9 N O3SER
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Submitted: 20 

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1996-01-29
    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: 2022-02-16
    Changes: Database references, Derived calculations, Other