1QX7	Signaling Protein	date	Sep 04, 2003
title	Crystal Structure Of Apocam Bound To The Gating Domain Of Sm Conductance Ca2+-Activated Potassium Channel
authors	M.A.Schumacher, M.Crum, M.C.Miller
compound		source
Molecule: Calmodulin Chain: I, R, A, B, M Engineered: Yes		Organism_scientific: Rattus Norvegicus Organism_common: Norway Rat Organism_taxid: 10116 Gene: Calm1, Cam1, Calm, Cam, Calm2, Cam2, Camb, Calm3, Cam Expression_system: Escherichia Coli Bl21(De3) Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet23b
Molecule: Small Conductance Calcium-Activated Potassium Cha Protein 2; Chain: D Fragment: Sk2 Gating Domain (Residues 411-487) Synonym: Sk2 Engineered: Yes		Organism_scientific: Rattus Norvegicus Organism_common: Norway Rat Organism_taxid: 10116 Gene: Kcnn2 Expression_system: Escherichia Coli Bl21(De3) Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet28
symmetry	Space Group: P 41 21 2	R_factor 0.286 R_Free 0.308
crystal cell	length a length b length c angle alpha angle beta angle gamma 79.930 79.930 220.800 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	3.09 Å
ligand	MSE	enzyme
Gene Ontology	Chain Function Process Component A, M, R, I, B ion channel binding establishment of protein loc... D
Primary reference	Crystal structures of apocalmodulin and an apocalmodulin/SK potassium channel gating domain complex., Schumacher MA, Crum M, Miller MC, Structure (Camb) 2004 May;12(5):849-60. PMID:15130477

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (120 Kb) [Save to disk] Biological Unit Coordinates (1qx7.pdb1.gz) 48 Kb Biological Unit Coordinates (1qx7.pdb2.gz) 47 Kb Biological Unit Coordinates (1qx7.pdb3.gz) 22 Kb Biological Unit Coordinates (1qx7.pdb4.gz) 65 Kb LPC: Ligand-Protein Contacts for 1QX7 CSU: Contacts of Structural Units for 1QX7 Likely Quarternary Molecular Structure file(s) for 1QX7 Retrieve 1QX7 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1QX7 from S2C, [Save to disk]

View 1QX7 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 1QX7

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1QX7, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1qx7a_, region A [Jmol] [rasmolscript] [script source]     - Domain d1qx7b_, region B [Jmol] [rasmolscript] [script source]     - Domain d1qx7i_, region I [Jmol] [rasmolscript] [script source]     - Domain d1qx7m_, region M [Jmol] [rasmolscript] [script source]     - Domain d1qx7r_, region R [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: [1qx7_D] [1qx7_R] [1qx7_B] [1qx7_I] [1qx7_M] [1qx7_A] [1qx7] SWISS-PROT database: [P62161] [P70604] Domain organization of [CALM_RAT] [KCNN2_RAT] by SWISSPFAM Domains found in 1QX7: [CaMBD] [EFh ] by SMART

Other resources with information on 1QX7

Community annotation for 1QX7 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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