1HNF

CRYSTAL STRUCTURE OF THE EXTRACELLULAR REGION OF THE HUMAN CELL ADHESION MOLECULE CD2 AT 2.5 ANGSTROMS RESOLUTION

• PDB DOI: https://doi.org/10.2210/pdb1HNF/pdb

• Classification: T LYMPHOCYTE ADHESION GLYCOPROTEIN
• Organism(s): Homo sapiens
• Mutation(s): No 


• Deposited: 1994-08-10 Released: 1995-02-07 
• Deposition Author(s): Bodian, D.L., Jones, E.Y., Harlos, K., Stuart, D.I., Davis, S.J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Work: 0.193 
• R-Value Observed: 0.193 

Literature

Crystal structure of the extracellular region of the human cell adhesion molecule CD2 at 2.5 A resolution.

Bodian, D.L., Jones, E.Y., Harlos, K., Stuart, D.I., Davis, S.J.

(1994) Structure 2: 755-766

• PubMed: 7994575 
• DOI: https://doi.org/10.1016/s0969-2126(94)00076-x
• Primary Citation of Related Structures:  
  1HNF


• PubMed Abstract: 
  

  The T-lymphocyte antigen CD2 is an adhesion molecule implicated in immune responses in vivo. The extracellular regions of the human and rat homologues of CD2 share only 45% sequence identity and bind different protein ligands. Comparison of the human and rat soluble CD2 (sCD2) structures should provide insights into the structural basis of cell surface recognition.

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Organizational Affiliation: 

Laboratory of Molecular Biophysics, Oxford, UK.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 21.69 kDa 
• Atom Count: 1,512 
• Modelled Residue Count: 179 
• Deposited Residue Count: 182 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CD2	A	182	Homo sapiens	Mutation(s): 0
UniProt & NIH Common Fund Data Resources
Find proteins for P06729 (Homo sapiens) Explore P06729  Go to UniProtKB:  P06729
PHAROS:  P06729 GTEx:  ENSG00000116824

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAG	B [auth A], C [auth A], D [auth A]	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N
NA	E [auth A]	SODIUM ION Na FKNQFGJONOIPTF-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Work: 0.193 
• R-Value Observed: 0.193 
• Space Group: P 3₁ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 88.3	α = 90
b = 88.3	β = 90
c = 51.3	γ = 120

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Released Date: 1995-02-07 
Deposition Author(s): Bodian, D.L., Jones, E.Y., Harlos, K., Stuart, D.I., Davis, S.J.

Revision History  

• Version 1.0: 1995-02-07
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Non-polymer description, Version format compliance
• Version 1.3: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Data collection, Derived calculations, Other, Structure summary