1A68	Potassium Channels	date	Mar 06, 1998
title	Crystal Structure Of The Tetramerization Domain Of The Shaker Potassium Channel
authors	A.Kreusch, P.J.Pfaffinger, C.F.Stevens, S.Choe
compound		source
Molecule: Potassium Channel Kv1.1 Chain: A Fragment: Tetramerization Domain Engineered: Yes Mutation: Yes		Organism_scientific: Aplysia Californica Organism_common: California Sea Hare Organism_taxid: 6500 Cell_line: Bl21 Tissue: Central Nervous System Cellular_location: Cytoplasm Expression_system: Escherichia Coli Bl21(De3) Expression_system_taxid: 469008 Expression_system_strain: Bl21 (De3) Expression_system_cellular_location: Cytoplasm Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet20b
symmetry	Space Group: I 4	R_factor 0.200 R_Free 0.241
crystal cell	length a length b length c angle alpha angle beta angle gamma 51.034 51.034 65.605 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	1.80 Å
related structures	by homologous chain: 1EOE, 1EXB
Gene Ontology	Chain Function Process Component A
Primary reference	Crystal structure of the tetramerization domain of the Shaker potassium channel., Kreusch A, Pfaffinger PJ, Stevens CF, Choe S, Nature 1998 Apr 30;392(6679):945-8. PMID:9582078

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (19 Kb) [Save to disk] Biological Unit Coordinates (1a68.pdb1.gz) 62 Kb CSU: Contacts of Structural Units for 1A68 Likely Quarternary Molecular Structure file(s) for 1A68 Retrieve 1A68 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1A68 from S2C, [Save to disk]

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Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1A68, from MSDmotif at EBI Genome occurence of 1A68's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1a68__, region [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: [1a68] [1a68_A] SWISS-PROT database: [Q16968] Domain organization of [Q16968_APLCA] by SWISSPFAM Domain found in 1A68: [BTB ] by SMART

Other resources with information on 1A68

Community annotation for 1A68 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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