5HKJ Signaling Protein date Jan 14, 2016
title Single Chain Recombinant Globular Head Of The Complement Sys Protein C1q
authors C.P.Moreau, C.Gaboriaud
compound source
Molecule: Complement C1q Subcomponent Subunit A,Complement Subcomponent Subunit C,Complement C1q Subcomponent Subunit
Chain: A
Engineered: Yes
Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Gene: C1qa, C1qc, C1qg, C1qb
Expression_system: Homo Sapiens
Expression_system_taxid: 9606
Expression_system_cell_line: Hek 293-F
Expression_system_plasmid: Pcdna3.1
symmetry Space Group: C 1 2 1
R_factor 0.175 R_Free 0.200
length a length b length c angle alpha angle beta angle gamma
81.115 52.729 89.930 90.00 115.22 90.00
method X-Ray Diffractionresolution 1.35 Å
ligand CA, NAG enzyme

Primary referenceStructural and Functional Characterization of a Single-Chain Form of the Recognition Domain of Complement Protein C1q., Moreau C, Bally I, Chouquet A, Bottazzi B, Ghebrehiwet B, Gaboriaud C, Thielens N, Front Immunol. 2016 Mar 2;7:79. doi: 10.3389/fimmu.2016.00079. eCollection 2016. PMID:26973654
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (149 Kb) [Save to disk]
  • Biological Unit Coordinates (5hkj.pdb1.gz) 142 Kb
  • LPC: Ligand-Protein Contacts for 5HKJ
  • CSU: Contacts of Structural Units for 5HKJ
  • Structure Factors (1588 Kb)
  • Retrieve 5HKJ in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 5HKJ from S2C, [Save to disk]
  • Re-refined 5hkj structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 5HKJ 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 5HKJ
  • 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
  • Fold representative 5hkj from FSSP and Dali (Families of Structurally Similar Proteins)
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [5hkj] [5hkj_A]
  • SWISS-PROT database:
  • Domain organization of by SWISSPFAM
  • Domain found in 5HKJ: [C1Q ] by SMART
  • Other resources with information on 5HKJ
  • Community annotation for 5HKJ at PDBWiki (http://pdbwiki.org)

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