3BX7 De Novo Protein, Protein Binding date Jan 11, 2008
title Engineered Human Lipocalin 2 (Lcn2) In Complex With The Extracellular Domain Of Human Ctla-4
authors D.L.Schonfeld, L.Chatwell, A.Skerra
compound source
Molecule: Cytotoxic T-Lymphocyte-Associated Antigen 4
Chain: C
Synonym: Ctla-4, Cd152, Cytotoxic T-Lymphocyte Protein 4
Engineered: Yes
Organism_scientific: Homo Sapiens
Organism_common: Human
Gene: Ctla4, Cd152
Expression_system: Escherichia Coli
Expression_system_strain: Bl21 (De3)
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Pctla4-8

Molecule: Engineered Human Lipocalin 2
Chain: A
Synonym: Engineered Lcn2, Engineered Neutrophil-Gelatinase Associated Lipocalin, Engineered Siderocalin;
Engineered: Yes

Organism_scientific: Homo Sapiens
Organism_common: Human
Expression_system: Escherichia Coli
Expression_system_strain: W3110
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Pngal62
symmetry Space Group: P 32 2 1
R_factor 0.209 R_Free 0.226
length a length b length c angle alpha angle beta angle gamma
120.706 120.706 82.957 90.00 90.00 120.00
method X-Ray Diffractionresolution 2.10 Å


Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (54 Kb) [Save to disk]
  • Biological Unit Coordinates (3bx7.pdb1.gz) 99 Kb
  • CSU: Contacts of Structural Units for 3BX7
  • Likely Quarternary Molecular Structure file(s) for 3BX7
  • Structure Factors (245 Kb)
  • Retrieve 3BX7 in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 3BX7 from S2C, [Save to disk]
  • Re-refined 3bx7 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 3BX7 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 3BX7
  • Cartoon representation from PDB Cartoon
  • Ramachandran plot from PDBSum
  • 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 3BX7, from MSDmotif at EBI
  • Fold representative 3bx7 from FSSP and Dali (Families of Structurally Similar Proteins)
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [3bx7_C] [3bx7_A] [3bx7]
  • SWISS-PROT database: [P16410]
  • Domain organization of [CTLA4_HUMAN] by SWISSPFAM
  • Domain found in 3BX7: [IGv ] by SMART
  • Other resources with information on 3BX7
  • Community annotation for 3BX7 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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