Biological Assembly 1  

 3D View: Structure

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 46.37 kDa 
• Atom Count: 3352 
• Modelled Residue Count: 431 
• Deposited Residue Count: 431 
• Unique protein chains: 2

1GIG

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

• DOI: 10.2210/pdb1GIG/pdb

• Classification: IMMUNOGLOBULIN
• Organism(s): Mus musculus
• Mutation(s): No 


• Deposited: 1993-01-20 Released: 1994-04-30 
• Deposition Author(s): Bizebard, T., Knossow, M.

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Experimental Data Snapshot

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

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

• PubMed: 15299376 
• DOI: 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.

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Organizational Affiliation: 

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

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
IGG1-KAPPA HC19 FAB (LIGHT CHAIN)	L	210	Mus musculus	Mutation(s): 0

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
IGG1-KAPPA HC19 FAB (HEAVY CHAIN)	H	221	Mus musculus	Mutation(s): 0  Gene Names: Igh
Find proteins for Q99LC4 (Mus musculus) Explore Q99LC4  Go to UniProtKB:  Q99LC4

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 = 98.9	α = 90
b = 98.9	β = 90
c = 89.3	γ = 120

Software Package:

Software Name	Purpose
X-PLOR	model building
PROLSQ	refinement
X-PLOR	refinement
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1993-01-20 
• Released Date: 1994-04-30 
Deposition Author(s): Bizebard, T., Knossow, M.

Revision History  

• 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