2IH3	Membrane Protein	date	Sep 25, 2006
title	Ion Selectivity In A Semi-Synthetic K+ Channel Locked In The Conductive Conformation
authors	F.I.Valiyaveetil, M.Leonetti, T.W.Muir, R.Mackinnon
compound		source
Molecule: Fab Heavy Chain Chain: A		Organism_scientific: Mus Musculus Organism_common: House Mouse Organism_taxid: 10090 Cell_line: Hybridoma
Molecule: Fab Light Chain Chain: B		Organism_scientific: Mus Musculus Organism_common: House Mouse Organism_taxid: 10090 Cell_line: Hybridoma
Molecule: Voltage-Gated Potassium Channel Chain: C Engineered: Yes Mutation: Yes		Organism_scientific: Streptomyces Lividans Organism_taxid: 1916 Gene: Kcsa, Skc1 Expression_system: Escherichia Coli Expression_system_taxid: 562
symmetry	Space Group: I 4	R_factor 0.233 R_Free 0.242
crystal cell	length a length b length c angle alpha angle beta angle gamma 155.724 155.724 75.741 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	1.72 Å
ligand	1EM, DAL, K	enzyme
Gene Ontology	Chain Function Process Component C
Primary reference	Ion selectivity in a semisynthetic K+ channel locked in the conductive conformation., Valiyaveetil FI, Leonetti M, Muir TW, Mackinnon R, Science. 2006 Nov 10;314(5801):1004-7. PMID:17095703

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (96 Kb) [Save to disk] Biological Unit Coordinates (2ih3.pdb1.gz) 343 Kb LPC: Ligand-Protein Contacts for 2IH3 CSU: Contacts of Structural Units for 2IH3 Likely Quarternary Molecular Structure file(s) for 2IH3 Structure Factors (1467 Kb) Retrieve 2IH3 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2IH3 from S2C, [Save to disk] Re-refined 2ih3 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 2IH3 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 2IH3

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 2IH3, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2ih3] [2ih3_C] [2ih3_B] [2ih3_A] SWISS-PROT database: [P0A334] Belongs to the voltage-gated ion channel (vic) superfamily according to TCDB. Domain organization of [KCSA_STRLI] by SWISSPFAM Domains found in 2IH3: [IG_like] [IGv ] by SMART

Other resources with information on 2IH3

Community annotation for 2IH3 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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