2X44 Immune System date Jan 28, 2010
title Structure Of A Strand-Swapped Dimeric Form Of Ctla-4
authors A.F.P.Sonnen, C.Yu, E.J.Evans, D.I.Stuart, S.J.Davis, R.J.C.Gil
compound source
Molecule: Cytotoxic T-Lymphocyte Protein 4
Chain: D
Fragment: Residues 36-161
Synonym: Cytotoxic T-Lymphocyte-Associated Antigen 4, Ctla- Cd152, Cytotoxic T-Lymphocyte Antigen 4;
Engineered: Yes
Mutation: Yes
Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Cell_line: Jurkat
Tissue: Blood
Cell: T-Lymphocyte
Expression_system: Escherichia Coli
Expression_system_taxid: 469008
Expression_system_strain: Bl21(De3)
Other_details: Cdna Generated Directly From Jurkat Cells, C And Mutated Cys122ser.
symmetry Space Group: P 31 2 1
R_factor 0.19157 R_Free 0.24501
length a length b length c angle alpha angle beta angle gamma
42.951 42.951 140.101 90.00 90.00 120.00
method X-Ray Diffractionresolution 2.60 Å
Primary referenceDomain metastability: a molecular basis for immunoglobulin deposition?, Sonnen AF, Yu C, Evans EJ, Stuart DI, Davis SJ, Gilbert RJ, J Mol Biol. 2010 Jun 4;399(2):207-13. Epub 2010 Apr 13. PMID:20394753
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (25 Kb) [Save to disk]
  • Biological Unit Coordinates (2x44.pdb1.gz) 40 Kb
  • CSU: Contacts of Structural Units for 2X44
  • Structure Factors (31 Kb)
  • Retrieve 2X44 in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 2X44 from S2C, [Save to disk]
  • Re-refined 2x44 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 2X44 in 3D
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  • Visual 3D analysis of 2X44
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  • Structure-derived information
  • Electron Density related parameters from EDS Electron Density Server, at Upsala
  • Dipole moment, from Dipole Server at Weizmann Institute
  • Crystal Contacts, from CryCo at Weizmann Institute
  • 3D motif for 2X44, from MSDmotif at EBI
  • Fold representative 2x44 from FSSP and Dali (Families of Structurally Similar Proteins)
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [2x44] [2x44_D]
  • SWISS-PROT database:
  • Domain organization of by SWISSPFAM
  • Domain found in 2X44: [IGv ] by SMART
  • Alignments of the sequence of 2X44 with the sequences similar proteins can be viewed for 2X44's classification at ProtoMap. Click on "Neighbors List", then on the "See Alignments" button below the list.
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  • Other resources with information on 2X44
  • Community annotation for 2X44 at PDBWiki (http://pdbwiki.org)
  • MMDB (Entrez's Structure Database)
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