2QI9	Membrane Protein	date	Jul 03, 2007
title	Abc-Transporter Btucd In Complex With Its Periplasmic Bindin Btuf
authors	R.N.Hvorup, B.A.Goetz, M.Niederer, K.Hollenstein, E.Perozo, K.P.L
compound		source
Molecule: Vitamin B12 Import System Permease Protein Btuc Chain: A, B Engineered: Yes Mutation: Yes		Organism_scientific: Escherichia Coli Organism_taxid: 562 Gene: Btuc Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet19b
Molecule: Vitamin B12 Import Atp-Binding Protein Btud Chain: C, D Synonym: Vitamin B12-Transporting Atpase Ec: 3.6.3.33 Engineered: Yes Mutation: Yes		Organism_scientific: Escherichia Coli Organism_taxid: 562 Gene: Btud Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet19b
Molecule: Vitamin B12-Binding Protein Btuf Chain: F Engineered: Yes		Organism_scientific: Escherichia Coli Organism_taxid: 562 Gene: Btuf Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet19b
symmetry	Space Group: C 1 2 1	R_factor 0.262 R_Free 0.280
crystal cell	length a length b length c angle alpha angle beta angle gamma 213.582 127.396 97.547 90.00 112.76 90.00
method	X-Ray Diffraction	resolution	2.60 Å
ligand	1PE, MSE, PEG, PO4, SO4	enzyme	Hydrolase E.C.3.6.3.33 BRENDA
Gene Ontology	Chain Function Process Component A, B transmembrane transporter ac... vitamin transmembrane transp... D, C ATPase activity, coupled to ... F
Primary reference	Asymmetry in the structure of the ABC transporter-binding protein complex BtuCD-BtuF., Hvorup RN, Goetz BA, Niederer M, Hollenstein K, Perozo E, Locher KP, Science. 2007 Sep 7;317(5843):1387-90. Epub 2007 Aug 2. PMID:17673622

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (209 Kb) [Save to disk] Biological Unit Coordinates (2qi9.pdb1.gz) 197 Kb LPC: Ligand-Protein Contacts for 2QI9 CSU: Contacts of Structural Units for 2QI9 Likely Quarternary Molecular Structure file(s) for 2QI9 Structure Factors (557 Kb) Retrieve 2QI9 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2QI9 from S2C, [Save to disk] Re-refined 2qi9 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 2QI9 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 2QI9

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 2QI9, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2qi9] [2qi9_B] [2qi9_A] [2qi9_C] [2qi9_D] [2qi9_F] SWISS-PROT database: [P06609] [P06611] [P37028] Belongs to the atp-binding cassette (abc) superfamily according to TCDB. Domain organization of [BTUC_ECOLI] [BTUD_ECOLI] [BTUF_ECOLI] by SWISSPFAM Domain found in 2QI9: [AAA ] by SMART

Other resources with information on 2QI9

Community annotation for 2QI9 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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