2CKQ	Transferase	date	Apr 20, 2006
title	Crystal Structure Of Human Choline Kinase Alpha 2 In Complex Phosphocholine
authors	E.Malito, A.Lavie
compound		source
Molecule: Choline Kinase Alpha Chain: A, B Fragment: Splice Isoform 2, Residues 50-439 Synonym: Ck, Chetk-Alpha, Ethanolamine Kinase, Ek Ec: 2.7.1.32, 2.7.1.82 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Expression_system: Escherichia Coli Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) Expression_system_vector_type: Plasmid Expression_system_vector: Pgex-Rb
symmetry	Space Group: P 21 21 21	R_factor 0.214 R_Free 0.259
crystal cell	length a length b length c angle alpha angle beta angle gamma 52.500 128.300 172.200 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.40 Å
ligand	PC	enzyme	Transferase E.C.2.7.1.32 BRENDA
Primary reference	Elucidation of human choline kinase crystal structures in complex with the products ADP or phosphocholine., Malito E, Sekulic N, Too WC, Konrad M, Lavie A, J Mol Biol. 2006 Nov 24;364(2):136-51. Epub 2006 Sep 3. PMID:17007874

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (118 Kb) [Save to disk] Biological Unit Coordinates (2ckq.pdb1.gz) 112 Kb LPC: Ligand-Protein Contacts for 2CKQ CSU: Contacts of Structural Units for 2CKQ Likely Quarternary Molecular Structure file(s) for 2CKQ Structure Factors (623 Kb) Retrieve 2CKQ in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2CKQ from S2C, [Save to disk] Re-refined 2ckq structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 2CKQ 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 2CKQ

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 2CKQ, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2ckq_B] [2ckq_A] [2ckq] SWISS-PROT database: [P35790] Domain organization of [CHKA_HUMAN] by SWISSPFAM

Other resources with information on 2CKQ

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

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