2OK5	Hydrolase	date	Jan 16, 2007
title	Human Complement Factor B
authors	F.J.Milder, L.Gomes, A.Schouten, B.J.C.Janssen, E.G.Huizinga, R.A W.Hemrika, A.Roos, M.R.Daha, P.Gros
compound		source
Molecule: Complement Factor B Chain: A Ec: 3.4.21.47 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Cfb, Bf Expression_system: Homo Sapiens Expression_system_common: Human Expression_system_taxid: 9606 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pabc
symmetry	Space Group: P 31 2 1	R_factor 0.195 R_Free 0.241
crystal cell	length a length b length c angle alpha angle beta angle gamma 104.031 104.031 151.116 90.00 90.00 120.00
method	X-Ray Diffraction	resolution	2.30 Å
ligand	BMA, GOL, MAN, NAG	enzyme	Hydrolase E.C.3.4.21.47 BRENDA
Gene Ontology	Chain Function Process Component A
Primary reference	Factor B structure provides insights into activation of the central protease of the complement system., Milder FJ, Gomes L, Schouten A, Janssen BJ, Huizinga EG, Romijn RA, Hemrika W, Roos A, Daha MR, Gros P, Nat Struct Mol Biol. 2007 Mar;14(3):224-8. Epub 2007 Feb 25. PMID:17310251

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (128 Kb) [Save to disk] Biological Unit Coordinates (2ok5.pdb1.gz) 120 Kb LPC: Ligand-Protein Contacts for 2OK5 CSU: Contacts of Structural Units for 2OK5 Likely Quarternary Molecular Structure file(s) for 2OK5 Structure Factors (421 Kb) Retrieve 2OK5 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2OK5 from S2C, [Save to disk] Re-refined 2ok5 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 2OK5 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 2OK5

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 2OK5, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2ok5] [2ok5_A] SWISS-PROT database: [P00751] Domain organization of [CFAB_HUMAN] by SWISSPFAM Domains found in 2OK5: [CCP] [Tryp_SPc] [VWA ] by SMART

Other resources with information on 2OK5

Community annotation for 2OK5 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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