1MCP | pdb_00001mcp

PHOSPHOCHOLINE BINDING IMMUNOGLOBULIN FAB MC/PC603. AN X-RAY DIFFRACTION STUDY AT 2.7 ANGSTROMS

• PDB DOI: https://doi.org/10.2210/pdb1MCP/pdb

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


• Deposited: 1984-07-09 Released: 1985-01-02 
• Deposition Author(s): Satow, Y., Cohen, G.H., Padlan, E.A., Davies, D.R.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Work: 
  0.225 (Depositor), 0.208 (DCC) 

Literature

Phosphocholine binding immunoglobulin Fab McPC603. An X-ray diffraction study at 2.7 A.

Satow, Y., Cohen, G.H., Padlan, E.A., Davies, D.R.

(1986) J Mol Biology 190: 593-604

• PubMed: 3097327 
• DOI: https://doi.org/10.1016/0022-2836(86)90245-7
• Primary Citation Related Structures: 
  1MCP


• PubMed Abstract: 
  

  The crystal structure of the Fab of McPC603, a phosphocholine-binding mouse myeloma protein, has been refined at 2.7 A resolution by a combination of restrained least-squares refinement and molecular modeling. The overall structure remains as previously reported, with an elbow bend angle between the variable and constant modules of 133 degrees. Some adjustments have been made in the structure of the loops as a result of the refinement. The hypervariable loops are all visible in the electron density map with the exception of three residues in the first hypervariable loop of the light chain. A sulfate ion occupies the site of binding of the phosphate moiety of phosphocholine.

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: 48.53 kDa 
• Atom Count: 3,544 
• Modeled Residue Count: 442 
• Deposited Residue Count: 442 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
IGA-KAPPA MCPC603 FAB (LIGHT CHAIN)	A [auth L]	220	Mus musculus	Mutation(s): 0

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
IGA-KAPPA MCPC603 FAB (HEAVY CHAIN)	B [auth H]	222	Mus musculus	Mutation(s): 0
UniProt
Find proteins for P01789 (Mus musculus) Explore P01789  Go to UniProtKB:  P01789

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	C [auth H]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Work:  0.225 (Depositor), 0.208 (DCC) 

Space Group: P 6₃

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 162.531	α = 90
b = 162.531	β = 90
c = 60.719	γ = 120

Structure Validation

Entry History 

Deposition Data

• Released Date: 1985-01-02 
Deposition Author(s): Satow, Y., Cohen, G.H., Padlan, E.A., Davies, D.R.

Revision History  

• Version 1.0: 1985-01-02
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Advisory, Version format compliance
• Version 2.0: 2023-07-26
  Type: Remediation
  Changes: Advisory, Atomic model, Data collection, Database references, Derived calculations, Other
• Version 2.1: 2024-11-13
  Changes: Data collection, Structure summary