6BRB Structural Protein Immune System date Nov 30, 2017
title Novel Non-Antibody Protein Scaffold Targeting Cd40l
authors V.Oganesyan, M.Baca, T.Thisted, L.Grinberg, H.Wu, W.F.Dall'Acqua
compound source
Molecule: Cd40 Ligand
Chain: A
Fragment: Unp Residues 120-261
Synonym: Cd40-L, T-Cell Antigen Gp39, Tnf-Related Activatio Trap, Tumor Necrosis Factor Ligand Superfamily Member 5;
Engineered: Yes
Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Gene: Cd40lg, Cd40l, Tnfsf5, Trap
Expression_system: Homo Sapiens
Expression_system_taxid: 9606
Expression_system_cell_line: Hek293

Molecule: Tn3-Like
Chain: D
Engineered: Yes

Organism_scientific: Escherichia Coli
Organism_taxid: 562
Expression_system: Escherichia Coli
Expression_system_taxid: 562
symmetry Space Group: P 3 2 1
R_factor 0.225 R_Free 0.273
length a length b length c angle alpha angle beta angle gamma
93.528 93.528 66.685 90.00 90.00 120.00
method X-Ray Diffractionresolution 2.82 Å

Primary referenceA CD40L-targeting protein reduces autoantibodies and improves disease activity in patients with autoimmunity., Karnell JL, Albulescu M, Drabic S, Wang L, Moate R, Baca M, Oganesyan V, Gunsior M, Thisted T, Yan L, Li J, Xiong X, Eck SC, de Los Reyes M, Yusuf I, Streicher K, Muller-Ladner U, Howe D, Ettinger R, Herbst R, Drappa J, Sci Transl Med. 2019 Apr 24;11(489). pii: 11/489/eaar6584. doi:, 10.1126/scitranslmed.aar6584. PMID:31019027
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (84 Kb) [Save to disk]
  • Biological Unit Coordinates (6brb.pdb1.gz) 230 Kb
  • CSU: Contacts of Structural Units for 6BRB
  • Structure Factors (79 Kb)
  • Retrieve 6BRB in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 6BRB from S2C, [Save to disk]
  • View 6BRB 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 6BRB
  • 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
  • Fold representative 6brb from FSSP and Dali (Families of Structurally Similar Proteins)
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [6brb_A] [6brb_D]
  • SWISS-PROT database:
  • Domain organization of by SWISSPFAM
  • Other resources with information on 6BRB
  • Community annotation for 6BRB at PDBWiki (http://pdbwiki.org)

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