Biological Assembly 1  

 3D View: Structure

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Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 19725.41 
• Atom Count: 1383 
• Residue Count: 178 
• Unique protein chains: 1

1CDH

STRUCTURES OF AN HIV AND MHC BINDING FRAGMENT FROM HUMAN CD4 AS REFINED IN TWO CRYSTAL LATTICES

• DOI: 10.2210/pdb1CDH/pdb
• Entry 1CDH supersedes 1CD4

• Classification: T-CELL SURFACE GLYCOPROTEIN
• Organism(s): Homo sapiens


• Deposited: 1994-01-26 Released: 1994-04-30 
• Deposition Author(s): Ryu, S.E., Truneh, A., Sweet, R.W., Hendrickson, W.A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.3 Å
• R-Value Work: 0.193 

Literature

Structures of an HIV and MHC binding fragment from human CD4 as refined in two crystal lattices.

Ryu, S.E., Truneh, A., Sweet, R.W., Hendrickson, W.A.

(1994) Structure 2: 59-74

• PubMed: 8075984 
• DOI: 10.1016/S0969-2126(00)00008-3
• Primary Citation of Related Structures:  
  1CDI


• PubMed Abstract: 
  

The T-cell surface glycoprotein CD4 interacts with class II molecules of the major histocompatibility complex (MHC) enhancing the signal for T-cell activation. Human CD4 also interacts, at high affinity, with the HIV envelope glycoprotein, gp120, to mediate T-cell infection by HIV. Crystal structures of amino-terminal two-domain (D1D2) fragments of human CD4, which contain the residues implicated in HIV and MHC interactions, have been reported earlier.

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Organizational Affiliation: 

Department of Biochemistry and Molecular Biophysics, Columbia University, New York, NY 10032.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
T CELL SURFACE GLYCOPROTEIN CD4	A	178	Homo sapiens	Gene Names: CD4
Find proteins for P01730 (Homo sapiens) Go to Gene View: CD4 Go to UniProtKB:  P01730

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.3 Å
• R-Value Work: 0.193 
• Space Group: C 1 2 1

Unit Cell:

Length (Å)	Angle (°)
a = 83.710	α = 90.00
b = 30.010	β = 117.28
c = 87.540	γ = 90.00

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1994-01-26 
• Released Date: 1994-04-30 
• Deposition Author(s): Ryu, S.E., Truneh, A., Sweet, R.W., Hendrickson, W.A.
• This entry supersedes: 1CD4

Revision History 

• Version 1.0: 1994-04-30
  Type: Initial release
• Version 1.1: 2008-03-24
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance