1AH1 image
Deposition Date 1997-04-11
Release Date 1998-04-15
Last Version Date 2024-11-20
Entry Detail
PDB ID:
1AH1
Keywords:
IMMUNORECEPTOR
Title:
CTLA-4, NMR, 20 STRUCTURES
Biological Source:
Source Organism(s):
Homo sapiens (Taxon ID: 9606)
Expression System(s):
Cricetulus griseus
Method Details:
Experimental Method:
SOLUTION NMR
Conformers Calculated:
50
Conformers Submitted:
20
Selection Criteria:
LEAST RESTRAINT VIOLATION
1AH1 validation report
Macromolecular Entities
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:CTLA-4
Gene (Uniprot):CTLA4
Chain IDs:A
Chain Length:129
Number of Molecules:1
Biological Source:Homo sapiens
UniProt ID:P16410 Pfam ID:PF07686
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
ASN A ASN GLYCOSYLATION SITE
Ligand Molecules
NA
Primary Citation
Solution structure of human CTLA-4 and delineation of a CD80/CD86 binding site conserved in CD28.
Nat.Struct.Biol. 4 527 531 (1997)
PMID: 9228944 DOI: 10.1038/nsb0797-527

Abstact

The structure of human CTLA-4 reveals that residues Met 99, Tyr 100 and Tyr 104 of the M99YPPPY104 motif are adjacent to a patch of charged surface residues on the A'GFCC' face of the protein. Mutation of these residues, which are conserved in the CTLA-4/CD28 family, significantly reduces binding to CD80 and/or CD86, implicating this patch as a ligand binding site.

Legend

Protein

Chemical

Disease

Primary Citation of related structures
1AH1
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