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
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  • Electron Density related parameters from EDS Electron Density Server, at Upsala
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  • 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]
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  • Domain found in 2X44: [IGv ] by SMART
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