1I8L Immune System date Mar 14, 2001
title Human B7-1ctla-4 Co-Stimulatory Complex
authors C.C.Stamper, W.S.Somers, L.Mosyak
compound source
Molecule: T Lymphocyte Activation Antigen Cd80
Chain: A, B
Fragment: Extracellular Domain, Residues 35-242
Synonym: Activation B7-1 Antigen, Ctla-4 Counter-Receptor B
Engineered: Yes
Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Expression_system: Cricetulus Griseus
Expression_system_common: Chinese Hamster
Expression_system_taxid: 10029

Molecule: Cytotoxic T-Lymphocyte Protein 4
Chain: C, D
Fragment: Extracellular Domain, Residues 36-161
Synonym: Ctla-4, Cytotoxic T-Lymphocyte-Associated Antigen
Engineered: Yes

Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Expression_system: Cricetulus Griseus
Expression_system_common: Chinese Hamster
Expression_system_taxid: 10029
symmetry Space Group: C 2 2 21
R_factor 0.229 R_Free 0.257
crystal
cell
length a length b length c angle alpha angle beta angle gamma
88.600 183.238 230.726 90.00 90.00 90.00
method X-Ray Diffractionresolution 3.00 Å
ligand MAN, NAG enzyme
related structures by homologous chain: 1AH1, 1DQT, 1DR9
Primary referenceCrystal structure of the B7-1/CTLA-4 complex that inhibits human immune responses., Stamper CC, Zhang Y, Tobin JF, Erbe DV, Ikemizu S, Davis SJ, Stahl ML, Seehra J, Somers WS, Mosyak L, Nature 2001 Mar 29;410(6828):608-11. PMID:11279502
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (113 Kb) [Save to disk]
  • Biological Unit Coordinates (1i8l.pdb1.gz) 55 Kb
  • Biological Unit Coordinates (1i8l.pdb2.gz) 54 Kb
  • LPC: Ligand-Protein Contacts for 1I8L
  • CSU: Contacts of Structural Units for 1I8L
  • Likely Quarternary Molecular Structure file(s) for 1I8L
  • Retrieve 1I8L in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1I8L from S2C, [Save to disk]
  • View 1I8L in 3D
  • Proteopedia, because life has more than 2D.
  • On Jmol, a nice Rasmol like molecule viewer. This is good for easiest viewing of basic structure.
  • On FirstGlance, an excellent tool for a guided tour on the structure components, by E. Martz.
  • Visual 3D analysis of 1I8L
  • Cartoon representation from PDB Cartoon
  • Ramachandran plot from PDBSum
  • Structure-derived information
  • Dipole moment, from Dipole Server at Weizmann Institute
  • Crystal Contacts, from CryCo at Weizmann Institute
  • 3D motif for 1I8L, from MSDmotif at EBI
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1i8la1, region A:1-105 [Jmol] [rasmolscript] [script source]
        - Domain d1i8la2, region A:106-199 [Jmol] [rasmolscript] [script source]
        - Domain d1i8lb1, region B:1-105 [Jmol] [rasmolscript] [script source]
        - Domain d1i8lb2, region B:106-199 [Jmol] [rasmolscript] [script source]
        - Domain d1i8lc_, region C [Jmol] [rasmolscript] [script source]
        - Domain d1i8ld_, region D [Jmol] [rasmolscript] [script source]
  • Fold representative 1i8l from FSSP and Dali (Families of Structurally Similar Proteins)
  • Class (fold), Architecture (subfold), Topology, Homologous superfamily from CATH
  • Summaries and structural analyses of PDB data files from PDBSum
  • Identification of Protein Pockets & Cavities at CASTp
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [1i8l_A] [1i8l_C] [1i8l_D] [1i8l] [1i8l_B]
  • SWISS-PROT database: [P33681] [P16410]
  • Domain organization of [CD80_HUMAN] [CTLA4_HUMAN] by SWISSPFAM
  • Domains found in 1I8L: [IG] [IGv ] by SMART
  • Other resources with information on 1I8L
  • Community annotation for 1I8L at PDBWiki (http://pdbwiki.org)
  • MMDB (Entrez's Structure Database)
  • Movements, Movies and Images
  • Images from IMB Jena Image Library of Biological Macromolecules.

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