3QO0 | pdb_00003qo0

Monoclinic form of IgG1 Fab fragment (in complex with antigenic peptide) sharing same Fv as IgA

• PDB DOI: https://doi.org/10.2210/pdb3QO0/pdb

• Classification: IMMUNE SYSTEM
• Organism(s): Homo sapiens
• Mutation(s): No 


• Deposited: 2011-02-09 Released: 2012-02-15 
• Deposition Author(s): Trajtenberg, F., Correa-Bove, A., Buschiazzo, A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 
  0.221 (Depositor), 0.229 (DCC) 
• R-Value Work: 
  0.169 (Depositor), 0.174 (DCC) 
• R-Value Observed: 
  0.171 (Depositor) 

Literature

Crystal structures of human IGA1 and IGG1 fab fragments sharing the same variable domains

Trajtenberg, F., Correa-Bove, A., Pritsch, O., Dighiero, G., Oppezzo, P., Buschiazzo, A.

To be published.

Biological Assembly 1  

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: 49.78 kDa 
• Atom Count: 3,548 
• Modeled Residue Count: 441 
• Deposited Residue Count: 459 
• Unique protein chains: 3

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Fab fragment of IMMUNOGLOBULIN G1 LIGHT CHAIN	A	219	Homo sapiens	Mutation(s): 0

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Fab fragment of IMMUNOGLOBULIN G1 HEAVY CHAIN	B	220	Homo sapiens	Mutation(s): 0

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Peptide from Tubulin beta chain	C	20	N/A	Mutation(s): 0
UniProt & NIH Common Fund Data Resources
Find proteins for P07437 (Homo sapiens) Explore P07437  Go to UniProtKB:  P07437
PHAROS:  P07437 GTEx:  ENSG00000196230

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GOL	D [auth A], E [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free:  0.221 (Depositor), 0.229 (DCC) 
• R-Value Work:  0.169 (Depositor), 0.174 (DCC) 
• R-Value Observed: 0.171 (Depositor) 

Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 53.32	α = 90
b = 67.27	β = 103.1
c = 68.88	γ = 90

Software Package:

Software Name	Purpose
SCALA	data scaling
BUSTER-TNT	refinement
PDB_EXTRACT	data extraction
MAR345dtb	data collection
XDS	data reduction
FFT	phasing
BUSTER	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 2012-02-15 
Deposition Author(s): Trajtenberg, F., Correa-Bove, A., Buschiazzo, A.

Revision History  

• Version 1.0: 2012-02-15
  Type: Initial release
  
• Version 1.1: 2017-11-08
  Changes: Refinement description
• Version 1.2: 2024-11-06
  Changes: Data collection, Database references, Derived calculations, Structure summary