1I85 Immune System date Mar 12, 2001
title Crystal Structure Of The Ctla-4b7-2 Complex
authors J.C.D.Schwartz, X.Zhang, A.A.Fedorov, S.G.Nathenson, S.C.Almo
compound source
Molecule: T Lymphocyte Activation Antigen Cd86
Chain: A, B
Fragment: Ig V-Type (Receptor Binding) Domain
Synonym: B7-2
Engineered: Yes
Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Gene: Cd86
Expression_system: Escherichia Coli Bl21(De3)
Expression_system_taxid: 469008
Expression_system_strain: Bl21 (De3)
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Pet3a

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

Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Gene: Ctla4
Expression_system: Escherichia Coli Bl21(De3)
Expression_system_taxid: 469008
Expression_system_strain: Bl21 (De3)
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Pet3a
symmetry Space Group: P 1 21 1
R_factor 0.217 R_Free 0.300
crystal
cell
length a length b length c angle alpha angle beta angle gamma
47.850 54.560 103.090 90.00 91.63 90.00
method X-Ray Diffractionresolution 3.20 Å
Primary referenceStructural basis for co-stimulation by the human CTLA-4/B7-2 complex., Schwartz JC, Zhang X, Fedorov AA, Nathenson SG, Almo SC, Nature 2001 Mar 29;410(6828):604-8. PMID:11279501
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (77 Kb) [Save to disk]
  • Biological Unit Coordinates (1i85.pdb1.gz) 72 Kb
  • CSU: Contacts of Structural Units for 1I85
  • Likely Quarternary Molecular Structure file(s) for 1I85
  • Retrieve 1I85 in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1I85 from S2C, [Save to disk]
  • View 1I85 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 1I85
  • 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 1I85, from MSDmotif at EBI
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1i85a_, region A [Jmol] [rasmolscript] [script source]
        - Domain d1i85b_, region B [Jmol] [rasmolscript] [script source]
        - Domain d1i85c_, region C [Jmol] [rasmolscript] [script source]
        - Domain d1i85d_, region D [Jmol] [rasmolscript] [script source]
  • Fold representative 1i85 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: [1i85_A] [1i85] [1i85_B] [1i85_D] [1i85_C]
  • SWISS-PROT database: [P42081] [P16410]
  • Domain organization of [CD86_HUMAN] [CTLA4_HUMAN] by SWISSPFAM
  • Domain found in 1I85: [IGv ] by SMART
  • Alignments of the sequence of 1I85 with the sequences similar proteins can be viewed for 1I85's classification [CD86_HUMAN] [CTLA4_HUMAN] at ProtoMap. Click on "Neighbors List", then on the "See Alignments" button below the list.
  • A sequence distance tree ("phylogenetic tree") can be viewed for 1ACL's classification [CD86_HUMAN] [CTLA4_HUMAN] at ProtoMap. Click on the Cluster number.
  • Other resources with information on 1I85
  • Community annotation for 1I85 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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