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- PDB-2cgu: Identification of chemically diverse Chk1 inhibitors by receptor-... -

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Basic information

Entry
Database: PDB / ID: 2cgu
TitleIdentification of chemically diverse Chk1 inhibitors by receptor- based virtual screening
ComponentsSERINE/THREONINE-PROTEIN KINASE CHK1
KeywordsTRANSFERASE / DOCKING / DRUG DESIGN / ONCOLOGY / VIRTUAL SCREENING / ATP- BINDING / CELL CYCLE / DNA DAMAGE / DNA REPAIR / KINASE / NUCLEAR PROTEIN / NUCLEOTIDE-BINDING / PHOSPHORYLATION / POLYMORPHISM / SERINE/THREONINE-PROTEIN KINASE / UBL CONJUGATION
Function / homology
Function and homology information


regulation of transcription from RNA polymerase II promoter in response to UV-induced DNA damage / histone kinase activity (H3-T11 specific) / negative regulation of mitotic nuclear division / regulation of histone H3-K9 acetylation / regulation of mitotic centrosome separation / chromatin-mediated maintenance of transcription / signal transduction involved in G2 DNA damage checkpoint / regulation of double-strand break repair via homologous recombination / DNA damage induced protein phosphorylation / negative regulation of G0 to G1 transition ...regulation of transcription from RNA polymerase II promoter in response to UV-induced DNA damage / histone kinase activity (H3-T11 specific) / negative regulation of mitotic nuclear division / regulation of histone H3-K9 acetylation / regulation of mitotic centrosome separation / chromatin-mediated maintenance of transcription / signal transduction involved in G2 DNA damage checkpoint / regulation of double-strand break repair via homologous recombination / DNA damage induced protein phosphorylation / negative regulation of G0 to G1 transition / replicative senescence / positive regulation of cell cycle / condensed nuclear chromosome / DNA damage checkpoint / chromatin / cellular response to mechanical stimulus / peptidyl-threonine phosphorylation / kinase activity / regulation of signal transduction by p53 class mediator / DNA replication / non-specific serine/threonine protein kinase / cell cycle / intracellular signal transduction / protein kinase activity / centrosome / intracellular membrane-bounded organelle / DNA repair / apoptotic process / cellular response to DNA damage stimulus / protein domain specific binding / protein serine/threonine kinase activity / protein phosphorylation / protein-containing complex / extracellular space / nucleoplasm / ATP binding / nucleus / cytosol / cytoplasm
Protein kinase domain / Protein kinase domain / Checkpoint kinase 1, catalytic domain / Protein kinase, ATP binding site / Protein kinase-like domain superfamily / Serine/threonine-protein kinase, active site / Transferase(Phosphotransferase) domain 1 / Transferase(Phosphotransferase); domain 1 / Phosphorylase Kinase; domain 1 / Phosphorylase Kinase; domain 1 ...Protein kinase domain / Protein kinase domain / Checkpoint kinase 1, catalytic domain / Protein kinase, ATP binding site / Protein kinase-like domain superfamily / Serine/threonine-protein kinase, active site / Transferase(Phosphotransferase) domain 1 / Transferase(Phosphotransferase); domain 1 / Phosphorylase Kinase; domain 1 / Phosphorylase Kinase; domain 1 / 2-Layer Sandwich / Orthogonal Bundle / Mainly Alpha / Alpha Beta
Serine/threonine-protein kinase Chk1
Biological speciesHOMO SAPIENS (human)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.5 Å
AuthorsFoloppe, N. / Fisher, L.M. / Howes, R. / Potter, A. / Robertson, A.G.S. / Surgenor, A.E.
CitationJournal: Bioorg.Med.Chem. / Year: 2006
Title: Identification of Chemically Diverse Chk1 Inhibitors by Receptor-Based Virtual Screening.
Authors: Foloppe, N. / Fisher, L.M. / Howes, R. / Potter, A. / Robertson, A.G.S. / Surgenor, A.E.
Validation Report
SummaryFull reportAbout validation report
History
DepositionMar 9, 2006Deposition site: PDBE / Processing site: PDBE
Revision 1.0Apr 5, 2006Provider: repository / Type: Initial release
Revision 1.1May 8, 2011Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: SERINE/THREONINE-PROTEIN KINASE CHK1
hetero molecules


Theoretical massNumber of molelcules
Total (without water)34,4912
Polymers34,1481
Non-polymers3431
Water2,810156
1


TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPQS
Unit cell
γ
α
β
Length a, b, c (Å)44.993, 65.787, 54.625
Angle α, β, γ (deg.)90.00, 102.28, 90.00
Int Tables number4
Space group name H-MP1211

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Components

#1: Protein/peptide SERINE/THREONINE-PROTEIN KINASE CHK1 / CHK1 KINASE


Mass: 34148.148 Da / Num. of mol.: 1 / Fragment: N-TERMINAL KINASE DOMAIN, RESIDUES 1-289
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) HOMO SAPIENS (human) / Plasmid: PFASTBAC1/CHK1 1-289 C8H / Cell line (production host): SF9 / Production host: SPODOPTERA FRUGIPERDA (fall armyworm) / References: UniProt: O14757, EC: 2.7.1.37
#2: Chemical ChemComp-3A3 / 2,2'-{[9-(HYDROXYIMINO)-9H-FLUORENE-2,7-DIYL]BIS(OXY)}DIACETIC ACID


Mass: 343.288 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C17H13NO7
#3: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 156 / Source method: isolated from a natural source / Formula: H2O / Water
Compound detailsREQUIRED FOR CHECKPOINT MEDIATED CELL CYCLE ARREST IN RESPONSE TO DNA DAMAGE OR THE PRESENCE OF ...REQUIRED FOR CHECKPOINT MEDIATED CELL CYCLE ARREST IN RESPONSE TO DNA DAMAGE OR THE PRESENCE OF UNREPLICATED DNA

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 2.9 Å3/Da / Density % sol: 56.9 %
Crystal growpH: 7.5 / Details: pH 7.50

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: APS / Beamline: 19-ID / Wavelength: 0.9792
DetectorType: ADSC CCD / Detector: CCD
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.9792 Å / Relative weight: 1
ReflectionResolution: 2.5→30 Å / Num. obs: 11961 / % possible obs: 70.5 % / Observed criterion σ(I): 2 / Redundancy: 4.1 % / Rmerge(I) obs: 0.08 / Net I/σ(I): 10.6
Reflection shellResolution: 2.5→2.57 Å / Redundancy: 0.9 % / Rmerge(I) obs: 0.23 / Mean I/σ(I) obs: 2.3 / % possible all: 22.1

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Processing

Software
NameVersionClassification
REFMAC5.1.09refinement
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 1IA8
Resolution: 2.5→30 Å / Cor.coef. Fo:Fc: 0.944 / Cor.coef. Fo:Fc free: 0.872 / SU B: 12.875 / SU ML: 0.267 / Cross valid method: THROUGHOUT / ESU R Free: 0.416 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS.
RfactorNum. reflection% reflectionSelection details
Rfree0.271 408 5 %RANDOM
Rwork0.181 ---
Obs0.185 7709 74.8 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.4 Å / Solvent model: BABINET MODEL WITH MASK
Displacement parametersBiso mean: 42.26 Å2
Baniso -1Baniso -2Baniso -3
1--2.71 Å20 Å2-0.35 Å2
2--0.44 Å20 Å2
3---2.13 Å2
Refinement stepCycle: LAST / Resolution: 2.5→30 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2130 0 25 156 2311
Refine LS restraints

Refinement-ID: X-RAY DIFFRACTION

TypeDev idealDev ideal targetNumber
r_bond_refined_d0.0210.0212207
r_bond_other_d
r_angle_refined_deg2.0591.9742990
r_angle_other_deg
r_dihedral_angle_1_deg7.4145261
r_dihedral_angle_2_deg
r_dihedral_angle_3_deg20.78115391
r_dihedral_angle_4_deg14.5841514
r_chiral_restr0.1450.2319
r_gen_planes_refined0.0070.021684
r_gen_planes_other
r_nbd_refined0.250.21008
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined0.2030.2142
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined0.3140.245
r_symmetry_vdw_other
r_symmetry_hbond_refined0.7370.216
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_it1.0841.51313
r_mcbond_other
r_mcangle_it2.06322124
r_mcangle_other
r_scbond_it2.7493894
r_scbond_other
r_scangle_it4.5154.5866
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded
LS refinement shellResolution: 2.5→2.56 Å / Total num. of bins used: 20 /
RfactorNum. reflection
Rfree0.304 19
Rwork0.245 180

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