2A73 Immune System date Jul 04, 2005
title Human Complement Component C3
authors B.J.C.Janssen, E.G.Huizinga, H.C.A.Raaijmakers, A.Roos, M.R.Daha K.Nilsson-Ekdahl, B.Nilsson, P.Gros
compound source
Molecule: Complement C3
Chain: A
Fragment: Residue 1-645
Other_details: Mature C3 Is Made Up Of Two Fragments A & B Linked By S-S Bond;
Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Other_details: Serum

Molecule: Complement C3
Chain: B
Fragment: Residue 650-1663

Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Other_details: Serum
symmetry Space Group: I 2 2 2
R_factor 0.230 R_Free 0.289
crystal
cell
length a length b length c angle alpha angle beta angle gamma
116.980 156.260 271.200 90.00 90.00 90.00
method X-Ray Diffractionresolution 3.30 Å
ligand BMA, MAN, NAG enzyme
Gene
Ontology
ChainFunctionProcessComponent
A


B


Primary referenceStructures of complement component C3 provide insights into the function and evolution of immunity., Janssen BJ, Huizinga EG, Raaijmakers HC, Roos A, Daha MR, Nilsson-Ekdahl K, Nilsson B, Gros P, Nature. 2005 Sep 22;437(7058):505-11. PMID:16177781
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (258 Kb) [Save to disk]
  • Biological Unit Coordinates (2a73.pdb1.gz) 251 Kb
  • LPC: Ligand-Protein Contacts for 2A73
  • CSU: Contacts of Structural Units for 2A73
  • Likely Quarternary Molecular Structure file(s) for 2A73
  • Structure Factors (315 Kb)
  • Retrieve 2A73 in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 2A73 from S2C, [Save to disk]
  • Re-refined 2a73 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 2A73 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 2A73
  • 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 2A73, from MSDmotif at EBI
  • Fold representative 2a73 from FSSP and Dali (Families of Structurally Similar Proteins)
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [2a73_B] [2a73_A] [2a73]
  • SWISS-PROT database: [P01024]
  • Domain organization of [CO3_HUMAN] by SWISSPFAM
  • Domains found in 2A73: [A2M] [A2M_N_2] [A2M_recep] [ANATO] [C345C] [Thiol-ester_cl ] by SMART
  • Other resources with information on 2A73
  • Community annotation for 2A73 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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