1T1D	Membrane Protein	date	Sep 22, 1998
title	Crystal Structure Of The Tetramerization Domain Of The Shake Potassium Channel
authors	A.Kreusch, P.J.Pfaffinger, C.F.Stevens, S.Choe
compound		source
Molecule: Protein (Potassium Channel Kv1.1) Chain: A Fragment: Tetramerization Domain Engineered: Yes		Organism_scientific: Aplysia Californica Organism_common: California Sea Hare Organism_taxid: 6500 Strain: Bl21 (De3) Cell_line: 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 2 2	R_factor 0.229 R_Free 0.249
crystal cell	length a length b length c angle alpha angle beta angle gamma 59.710 59.710 146.860 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	1.51 Å
note	1T1D is a representative structure
related structures	by homologous chain: 1DSX
Gene Ontology	Chain Function Process Component A
Primary reference	Zn2+-binding and molecular determinants of tetramerization in voltage-gated K+ channels., Bixby KA, Nanao MH, Shen NV, Kreusch A, Bellamy H, Pfaffinger PJ, Choe S, Nat Struct Biol 1999 Jan;6(1):38-43. PMID:9886290

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (23 Kb) [Save to disk] Biological Unit Coordinates (1t1d.pdb1.gz) 75 Kb CSU: Contacts of Structural Units for 1T1D Likely Quarternary Molecular Structure file(s) for 1T1D Retrieve 1T1D in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1T1D from S2C, [Save to disk]

View 1T1D 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 1T1D

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1T1D, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1t1da_, region A [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: [1t1d] [1t1d_A] SWISS-PROT database: [Q16968] Domain organization of [Q16968_APLCA] by SWISSPFAM Domain found in 1T1D: [BTB ] by SMART

Other resources with information on 1T1D

Community annotation for 1T1D at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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