2QHN	Transferase	date	Jul 02, 2007
title	Crystal Structure Of Chek1 In Complex With Inhibitor 1a
authors	Y.Yan, S.Munshi
compound		source
Molecule: Serinethreonine-Protein Kinase Chk1 Chain: A Fragment: Protein Kinase Domain, Residues 1-307 Ec: 2.7.11.1 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Expression_system: Spodoptera Frugiperda Expression_system_common: Fall Armyworm Expression_system_taxid: 7108 Expression_system_vector_type: Plasmid Expression_system_plasmid: Prad2030
symmetry	Space Group: P 1 21 1	R_factor 0.202 R_Free 0.230
crystal cell	length a length b length c angle alpha angle beta angle gamma 45.140 65.680 58.230 90.00 94.55 90.00
method	X-Ray Diffraction	resolution	1.70 Å
ligand	582	enzyme	Transferase E.C.2.7.11.1 BRENDA
Gene Ontology	Chain Function Process Component A
Primary reference	Optimization of a pyrazoloquinolinone class of Chk1 kinase inhibitors., Brnardic EJ, Garbaccio RM, Fraley ME, Tasber ES, Steen JT, Arrington KL, Dudkin VY, Hartman GD, Stirdivant SM, Drakas BA, Rickert K, Walsh ES, Hamilton K, Buser CA, Hardwick J, Tao W, Beck SC, Mao X, Lobell RB, Sepp-Lorenzino L, Yan Y, Ikuta M, Munshi SK, Kuo LC, Kreatsoulas C, Bioorg Med Chem Lett. 2007 Nov 1;17(21):5989-94. Epub 2007 Aug 19. PMID:17804227

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (54 Kb) [Save to disk] Biological Unit Coordinates (2qhn.pdb1.gz) 49 Kb LPC: Ligand-Protein Contacts for 2QHN CSU: Contacts of Structural Units for 2QHN Likely Quarternary Molecular Structure file(s) for 2QHN Retrieve 2QHN in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2QHN from S2C, [Save to disk]

View 2QHN 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 2QHN

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 2QHN, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2qhn_A] [2qhn] SWISS-PROT database: [O14757] Domain organization of [CHK1_HUMAN] by SWISSPFAM Domain found in 2QHN: [S_TKc ] by SMART

Other resources with information on 2QHN

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

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