1GIG

REFINED THREE-DIMENSIONAL STRUCTURE OF THE FAB FRAGMENT OF A MURINE IGG1, LAMBDA ANTIBODY


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Observed: 0.195 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Refined three-dimensional structure of the Fab fragment of a murine IgGl,lambda antibody.

Bizebard, T.Daniels, R.Kahn, R.Golinelli-Pimpaneau, B.Skehel, J.J.Knossow, M.

(1994) Acta Crystallogr D Biol Crystallogr 50: 768-777

  • DOI: https://doi.org/10.1107/S0907444994001903
  • Primary Citation of Related Structures:  
    1GIG

  • PubMed Abstract: 

    We report the cDNA sequence determination and the crystal structure of the Fab fragment of a murine IgG1,lambda antibody (HC19), specific for an influenza virus hemagglutinin. The HC19 Fab-fragment structure has been refined; the crystallographic R-factor is 19.5% at 2.3 A resolution. We have compared the conformation of HC19 complementarity determining regions (CDRs) with those of CDR loops of Fab structures available from the Protein Data Bank. These loops were chosen based on the identity of key residues, following the canonical-structure approach; four CDRs have a main-chain conformation very similar to the canonical structure that had been identified. HC19 L1 CDR adopts a conformation clearly distinct from all L1 CDRs that belong to a chain of a different class or origin; this is determined by the nature of a few residues at positions in the sequence different from those of key residues in other light chains. This canonical structure should be representative of most murine lambda-class light chains, as inferred from the very high sequence homologies of these polypeptides.


  • Organizational Affiliation

    Laboratoire de Biologie Structurale, UMR 9920, CNRS, Gif-sur-Yvette, France.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
IGG1-KAPPA HC19 FAB (LIGHT CHAIN)A [auth L]210Mus musculusMutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
IGG1-KAPPA HC19 FAB (HEAVY CHAIN)B [auth H]221Mus musculusMutation(s): 0 
UniProt
Find proteins for Q99LC4 (Mus musculus)
Explore Q99LC4 
Go to UniProtKB:  Q99LC4
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ99LC4
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Observed: 0.195 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 98.9α = 90
b = 98.9β = 90
c = 89.3γ = 120
Software Package:
Software NamePurpose
X-PLORmodel building
PROLSQrefinement
X-PLORrefinement
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1994-04-30
    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: 2024-06-05
    Changes: Data collection, Database references, Other