3IAX	Protein Transport	date	Jul 15, 2009
title	The Crystal Structure Of The Tolb Box Of Colicin A In Comple Tolb Reveals Important Differences In The Recruitment Of Th Tolb Translocation Portal Used By Group A Colicins
authors	C.Li
compound		source
Molecule: Protein Tolb Chain: A Engineered: Yes		Organism_scientific: Escherichia Coli Organism_taxid: 562 Strain: K-12 Gene: B0740, Jw5100, Tolb, Uti89_c0736 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Bl21(De3) Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet21a
Molecule: Colicin-A Chain: B Fragment: Translocation Domain (Unp Residues 1-107) Engineered: Yes		Organism_scientific: Citrobacter Freundii Organism_taxid: 546 Gene: Caa, Cola Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Bl21(De3) Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet21a Other_details: The Caa Gene Is Present On A Plasmid Pcola T Transferable Between Strains Of Enterobacteriaceae Includin Citrobacter Freundii And E. Coli (Morton Et Al., 1983. Embo 787-789). The Pcola Plasmid Used In This Study Was Isolated Nala Derivative Of The E. Coli Strain W3110 Containing Caa Originally Isolated From C. Freundii.
symmetry	Space Group: P 1 21 1	R_factor 0.190 R_Free 0.257
crystal cell	length a length b length c angle alpha angle beta angle gamma 61.955 40.174 80.868 90.00 97.18 90.00
method	X-Ray Diffraction	resolution	2.60 Å
ligand	CA, GOL, NA	enzyme
Gene	UTI89
Gene Ontology	Chain Function Process Component A
Primary reference	The crystal structure of the TolB box of colicin A in complex with TolB reveals important differences in the recruitment of the common TolB translocation portal used by group A colicins., Zhang Y, Li C, Vankemmelbeke MN, Bardelang P, Paoli M, Penfold CN, James R, Mol Microbiol. 2009 Jul 21. PMID:19627502

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (70 Kb) [Save to disk] Biological Unit Coordinates (3iax.pdb1.gz) 63 Kb LPC: Ligand-Protein Contacts for 3IAX CSU: Contacts of Structural Units for 3IAX Structure Factors (184 Kb) Retrieve 3IAX in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 3IAX from S2C, [Save to disk] Re-refined 3iax structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 3IAX 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 3IAX

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 3IAX, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [3iax] [3iax_B] [3iax_A] SWISS-PROT database: [P04480] [P0A855] Belongs to the channel-forming colicin (colicin) family according to TCDB. Belongs to the tonb-exbb-exbd/tola-tolq-tolr outer membrane receptor energizers and stabilizers (tonb/tola) family according to TCDB. Domain organization of [CEA_CITFR] [TOLB_ECOLI] by SWISSPFAM

Other resources with information on 3IAX

Community annotation for 3IAX at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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