1IIB	Phosphotransferase	date	Dec 23, 1996
title	Crystal Structure Of Iibcellobiose From Escherichia Coli
authors	R.L.M.Van Montfort, T.Pijning, K.H.Kalk, J.Reizer, M.H.Saier, M.M.G.M.Thunnissen, G.T.Robillard, B.W.Dijkstra
compound		source
Molecule: Enzyme Iib Of The Cellobiose-Specific Phosphotran System; Chain: A, B Fragment: Enzyme Iib Ec: 2.7.1.69 Engineered: Yes Mutation: Yes		Organism_scientific: Escherichia Coli Organism_taxid: 83333 Strain: K12 Cellular_location: Cytoplasm Gene: Cela Expression_system: Escherichia Coli Str. K12 Substr. W3110 Expression_system_taxid: 316407 Expression_system_strain: W3110
symmetry	Space Group: P 1 21 1	R_factor 0.187 R_Free 0.241
crystal cell	length a length b length c angle alpha angle beta angle gamma 53.791 31.782 60.253 90.00 101.70 90.00
method	X-Ray Diffraction	resolution	1.80 Å
ligand		enzyme	Transferase E.C.2.7.1.69 BRENDA
related structures	by homologous chain: 1H9C
Gene Ontology	Chain Function Process Component A, B protein-N(PI)-phosphohistidi... protein-phosphocysteine-N,N'...
Primary reference	The structure of an energy-coupling protein from bacteria, IIBcellobiose, reveals similarity to eukaryotic protein tyrosine phosphatases., van Montfort RL, Pijning T, Kalk KH, Reizer J, Saier MH Jr, Thunnissen MM, Robillard GT, Dijkstra BW, Structure 1997 Feb 15;5(2):217-25. PMID:9032081

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (37 Kb) [Save to disk] Biological Unit Coordinates (1iib.pdb1.gz) 17 Kb Biological Unit Coordinates (1iib.pdb2.gz) 18 Kb CSU: Contacts of Structural Units for 1IIB Likely Quarternary Molecular Structure file(s) for 1IIB Retrieve 1IIB in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1IIB from S2C, [Save to disk]

View 1IIB 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 1IIB

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1IIB, from MSDmotif at EBI Genome occurence of 1IIB's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1iiba_, region A [Jmol] [rasmolscript] [script source]     - Domain d1iibb_, region B [Jmol] [rasmolscript] [script source] Class (fold), Architecture (subfold), Topology, Homologous superfamily from CATH Summaries and structural analyses of PDB data files from PDBSum Identification of Protein Pockets & Cavities at CASTp

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1iib] [1iib_A] [1iib_B] SWISS-PROT database: [P69795] Belongs to the pts lactose-n,n'-diacetylchitobiose-β-glucoside (lac) family according to TCDB. Domain organization of [PTQB_ECOLI] by SWISSPFAM

Other resources with information on 1IIB

Community annotation for 1IIB at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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