2HT2	Membrane Protein	date	Jul 25, 2006
title	Structure Of The Escherichia Coli Clc Chloride Channel Y445h And Fab Complex
authors	A.Accardi, S.Lobet, C.Williams, C.Miller, R.Dutzler
compound		source
Molecule: H(+)Cl(-) Exchange Transporter Clca Chain: A, B Synonym: 1ecclc H+Cl- Antiporter; Clc-Ec1 Engineered: Yes Mutation: Yes		Organism_scientific: Escherichia Coli Organism_taxid: 562 Gene: Clca, Eric Expression_system: Escherichia Coli Bl21(De3) Expression_system_taxid: 469008 Expression_system_strain: Bl21de3 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet 28b+
Molecule: Fab Fragment, Heavy Chain Chain: C, E		Organism_scientific: Mus Musculus Organism_common: House Mouse Organism_taxid: 10090 Cell_line: Hybridoma Cell Line
Molecule: Fab Fragment, Light Chain Chain: D, F		Organism_scientific: Mus Musculus Organism_common: House Mouse Organism_taxid: 10090 Cell_line: Hybridoma Cell Line
symmetry	Space Group: C 1 2 1	R_factor 0.270 R_Free 0.305
crystal cell	length a length b length c angle alpha angle beta angle gamma 232.294 96.580 170.557 90.00 131.43 90.00
method	X-Ray Diffraction	resolution	3.32 Å
ligand	BR	enzyme	Oxidoreductase E.C.1 BRENDA
Gene Ontology	Chain Function Process Component A, B
Primary reference	Synergism Between Halide Binding and Proton Transport in a CLC-type Exchanger., Accardi A, Lobet S, Williams C, Miller C, Dutzler R, J Mol Biol. 2006 Sep 29;362(4):691-9. Epub 2006 Aug 2. PMID:16949616

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (276 Kb) [Save to disk] Biological Unit Coordinates (2ht2.pdb1.gz) 265 Kb LPC: Ligand-Protein Contacts for 2HT2 CSU: Contacts of Structural Units for 2HT2 Likely Quarternary Molecular Structure file(s) for 2HT2 Structure Factors (344 Kb) Retrieve 2HT2 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2HT2 from S2C, [Save to disk] Re-refined 2ht2 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 2HT2 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 2HT2

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 2HT2, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2ht2_D] [2ht2_C] [2ht2_F] [2ht2_B] [2ht2] [2ht2_A] [2ht2_E] SWISS-PROT database: [P37019] [P01808] [Q4VBH1] Belongs to the chloride carrier/channel (clc) family according to TCDB. Domain organization of [CLCA_ECOLI] [HVM38_MOUSE] [Q4VBH1_RAT] by SWISSPFAM Domains found in 2HT2: [IG_like] [IGv ] by SMART

Other resources with information on 2HT2

Community annotation for 2HT2 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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