2A79	Membrane Protein	date	Jul 05, 2005
title	Mammalian Shaker Kv1.2 Potassium Channel- Beta Subunit Compl
authors	S.B.Long, E.B.Campbell, R.Mackinnon
compound		source
Molecule: Voltage-Gated Potassium Channel Beta-2 Subunit Chain: A Synonym: K+, Channel Beta-2 Subunit, Kv-Beta-2 Engineered: Yes		Organism_scientific: Rattus Norvegicus Organism_common: Norway Rat Organism_taxid: 10116 Gene: Kcnab2, Ckbeta2, Kcnb3 Expression_system: Pichia Pastoris Expression_system_taxid: 4922
Molecule: Potassium Voltage-Gated Channel Subfamily A Membe Chain: B Synonym: Voltage-Gated Potassium Channel Subunit Kv1.2, Rbk Rak; Engineered: Yes		Organism_scientific: Rattus Norvegicus Organism_common: Norway Rat Organism_taxid: 10116 Gene: Kcna2 Expression_system: Pichia Pastoris Expression_system_taxid: 4922
Molecule: Poly-Unknown Chain Chain: C Fragment: T1-S1 Linker And S1 Helix Of The Kv1.2 Channel Engineered: Yes Other_details: Chain C Consists Of A Polyglycine Model For Linker And A Polyalanine Model For The S1 Helix Of Kv1.2.;		Organism_scientific: Rattus Norvegicus Organism_common: Norway Rat Organism_taxid: 10116 Gene: Kcna2 Expression_system: Pichia Pastoris Expression_system_taxid: 4922
Molecule: Poly-Unknown Chain Chain: D Fragment: S3 Helix Of The Kv1.2 Channel Engineered: Yes Other_details: Chain D Consists Of A Polyalanine Model For Helix Of Kv1.2.		Organism_scientific: Rattus Norvegicus Organism_common: Norway Rat Organism_taxid: 10116 Gene: Kcna2 Expression_system: Pichia Pastoris Expression_system_taxid: 4922
symmetry	Space Group: I 4	R_factor 0.222 R_Free 0.252
crystal cell	length a length b length c angle alpha angle beta angle gamma 113.605 113.605 260.473 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.90 Å
ligand	K, NAP	enzyme
Gene Ontology	Chain Function Process Component A voltage-gated ion channel ac... voltage-gated potassium chan... B
Primary reference	Crystal structure of a mammalian voltage-dependent Shaker family K+ channel., Long SB, Campbell EB, Mackinnon R, Science 2005 Aug 5;309(5736):897-903. Epub 2005 Jul 7. PMID:16002581

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (108 Kb) [Save to disk] Biological Unit Coordinates (2a79.pdb1.gz) 391 Kb LPC: Ligand-Protein Contacts for 2A79 CSU: Contacts of Structural Units for 2A79 Likely Quarternary Molecular Structure file(s) for 2A79 Structure Factors (315 Kb) Retrieve 2A79 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2A79 from S2C, [Save to disk] Re-refined 2a79 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

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Visual 3D analysis of 2A79

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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 2A79, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2a79_B] [2a79] [2a79_D] [2a79_C] [2a79_A] SWISS-PROT database: [P62483] [P63142] Domain organization of [KCAB2_RAT] [KCNA2_RAT] by SWISSPFAM Domain found in 2A79: [BTB ] by SMART

Other resources with information on 2A79

Community annotation for 2A79 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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