2ICF	Immune System	date	Sep 12, 2006
title	Crig Bound To C3b
authors	C.Wiesmann
compound		source
Molecule: Complement C3 Beta Chain Chain: A		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606
Molecule: Complement C3 Alpha Chain Chain: B		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606
Molecule: V-Set And Immunoglobulin Domain-Containing Protei Chain: S Synonym: Protein Z39ig Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Expression_system: Escherichia Coli Expression_system_taxid: 562
symmetry	Space Group: C 2 2 21	R_factor 0.252 R_Free 0.330
crystal cell	length a length b length c angle alpha angle beta angle gamma 97.614 255.749 180.302 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	4.10 Å
ligand	BMA, CA, NAG	enzyme
Gene Ontology	Chain Function Process Component A B S
Primary reference	Structure of C3b in complex with CRIg gives insights into regulation of complement activation., Wiesmann C, Katschke KJ, Yin J, Helmy KY, Steffek M, Fairbrother WJ, McCallum SA, Embuscado L, DeForge L, Hass PE, van Lookeren Campagne M, Nature. 2006 Nov 9;444(7116):217-20. Epub 2006 Oct 15. PMID:17051150

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (275 Kb) [Save to disk] Biological Unit Coordinates (2icf.pdb1.gz) 267 Kb LPC: Ligand-Protein Contacts for 2ICF CSU: Contacts of Structural Units for 2ICF Likely Quarternary Molecular Structure file(s) for 2ICF Structure Factors (282 Kb) Retrieve 2ICF in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2ICF from S2C, [Save to disk] Re-refined 2icf structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 2ICF 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 2ICF

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 3D motif for 2ICF, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2icf] [2icf_B] [2icf_A] [2icf_S] SWISS-PROT database: [P01024] [Q9Y279] Domain organization of [CO3_HUMAN] [VSIG4_HUMAN] by SWISSPFAM Domains found in 2ICF: [A2M] [A2M_N_2] [A2M_recep] [C345C] [IG] [Thiol-ester_cl ] by SMART

Other resources with information on 2ICF

Community annotation for 2ICF at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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