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- PDB-3f9n: Crystal structure of chk1 kinase in complex with inhibitor 38 -

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Basic information

Entry
Database: PDB / ID: 3f9n
TitleCrystal structure of chk1 kinase in complex with inhibitor 38
ComponentsSerine/threonine-protein kinase Chk1
KeywordsTRANSFERASE / chek1 / chk1 / kinase / cell cycle checkpoint / ATP-binding / Cytoplasm / DNA damage / DNA repair / Nucleotide-binding / Nucleus / Phosphoprotein / Polymorphism / Serine/threonine-protein kinase / Ubl conjugation
Function / homology
Function and homology information


negative regulation of G0 to G1 transition / apoptotic process involved in development / histone H3T11 kinase activity / negative regulation of DNA biosynthetic process / negative regulation of mitotic nuclear division / mitotic G2/M transition checkpoint / regulation of mitotic centrosome separation / inner cell mass cell proliferation / negative regulation of gene expression, epigenetic / regulation of double-strand break repair via homologous recombination ...negative regulation of G0 to G1 transition / apoptotic process involved in development / histone H3T11 kinase activity / negative regulation of DNA biosynthetic process / negative regulation of mitotic nuclear division / mitotic G2/M transition checkpoint / regulation of mitotic centrosome separation / inner cell mass cell proliferation / negative regulation of gene expression, epigenetic / regulation of double-strand break repair via homologous recombination / nucleus organization / cellular response to caffeine / Transcriptional Regulation by E2F6 / mitotic G2 DNA damage checkpoint signaling / Presynaptic phase of homologous DNA pairing and strand exchange / replicative senescence / signal transduction in response to DNA damage / positive regulation of cell cycle / Chk1/Chk2(Cds1) mediated inactivation of Cyclin B:Cdk1 complex / Activation of ATR in response to replication stress / regulation of signal transduction by p53 class mediator / condensed nuclear chromosome / replication fork / DNA damage checkpoint signaling / Ubiquitin Mediated Degradation of Phosphorylated Cdc25A / TP53 Regulates Transcription of DNA Repair Genes / peptidyl-threonine phosphorylation / G2/M DNA damage checkpoint / Signaling by SCF-KIT / cellular response to mechanical stimulus / G2/M transition of mitotic cell cycle / regulation of cell population proliferation / Processing of DNA double-strand break ends / DNA replication / Regulation of TP53 Activity through Phosphorylation / non-specific serine/threonine protein kinase / protein kinase activity / chromatin remodeling / protein domain specific binding / protein phosphorylation / intracellular membrane-bounded organelle / DNA repair / protein serine kinase activity / protein serine/threonine kinase activity / centrosome / apoptotic process / DNA damage response / chromatin / protein-containing complex / extracellular space / nucleoplasm / ATP binding / nucleus / cytoplasm / cytosol
Similarity search - Function
Checkpoint kinase 1, catalytic domain / Transferase(Phosphotransferase) domain 1 / Transferase(Phosphotransferase); domain 1 / Phosphorylase Kinase; domain 1 / Phosphorylase Kinase; domain 1 / Serine/threonine-protein kinase, active site / Serine/Threonine protein kinases active-site signature. / Protein kinase domain / Serine/Threonine protein kinases, catalytic domain / Protein kinase, ATP binding site ...Checkpoint kinase 1, catalytic domain / Transferase(Phosphotransferase) domain 1 / Transferase(Phosphotransferase); domain 1 / Phosphorylase Kinase; domain 1 / Phosphorylase Kinase; domain 1 / Serine/threonine-protein kinase, active site / Serine/Threonine protein kinases active-site signature. / Protein kinase domain / Serine/Threonine protein kinases, catalytic domain / Protein kinase, ATP binding site / Protein kinases ATP-binding region signature. / Protein kinase domain profile. / Protein kinase domain / Protein kinase-like domain superfamily / 2-Layer Sandwich / Orthogonal Bundle / Mainly Alpha / Alpha Beta
Similarity search - Domain/homology
Chem-38M / Serine/threonine-protein kinase Chk1
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / FOURIER SYNTHESIS / Resolution: 1.9 Å
AuthorsYan, Y. / Munshi, S. / Ikuta, M.
CitationJournal: Bioorg.Med.Chem.Lett. / Year: 2009
Title: Development of thioquinazolinones, allosteric Chk1 kinase inhibitors.
Authors: Converso, A. / Hartingh, T. / Garbaccio, R.M. / Tasber, E. / Rickert, K. / Fraley, M.E. / Yan, Y. / Kreatsoulas, C. / Stirdivant, S. / Drakas, B. / Walsh, E.S. / Hamilton, K. / Buser, C.A. / ...Authors: Converso, A. / Hartingh, T. / Garbaccio, R.M. / Tasber, E. / Rickert, K. / Fraley, M.E. / Yan, Y. / Kreatsoulas, C. / Stirdivant, S. / Drakas, B. / Walsh, E.S. / Hamilton, K. / Buser, C.A. / Mao, X. / Abrams, M.T. / Beck, S.C. / Tao, W. / Lobell, R. / Sepp-Lorenzino, L. / Zugay-Murphy, J. / Sardana, V. / Munshi, S.K. / Jezequel-Sur, S.M. / Zuck, P.D. / Hartman, G.D.
History
DepositionNov 14, 2008Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jan 20, 2009Provider: repository / Type: Initial release
Revision 1.1Jul 13, 2011Group: Version format compliance
Revision 1.2Sep 6, 2023Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model / struct_ref_seq_dif / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_ref_seq_dif.details / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Serine/threonine-protein kinase Chk1
hetero molecules


Theoretical massNumber of molelcules
Total (without water)37,5224
Polymers36,7911
Non-polymers7313
Water4,630257
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPISA
Unit cell
Length a, b, c (Å)45.060, 65.750, 58.410
Angle α, β, γ (deg.)90.00, 96.24, 90.00
Int Tables number4
Space group name H-MP1211

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Components

#1: Protein Serine/threonine-protein kinase Chk1


Mass: 36790.957 Da / Num. of mol.: 1 / Fragment: CHK1 kinase domain: UNP residues 2-307
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CHEK1, CHK1 / Plasmid: pRAD2030 / Production host: Spodoptera frugiperda (fall armyworm)
References: UniProt: O14757, non-specific serine/threonine protein kinase
#2: Chemical ChemComp-38M / 3-(3-chlorophenyl)-2-({(1S)-1-[(6S)-2,8-diazaspiro[5.5]undec-2-ylcarbonyl]pentyl}sulfanyl)quinazolin-4(3H)-one


Mass: 539.132 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C29H35ClN4O2S
#3: Chemical ChemComp-SO4 / SULFATE ION


Mass: 96.063 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: SO4
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 257 / Source method: isolated from a natural source / Formula: H2O

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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: 2.34 Å3/Da / Density % sol: 47.39 %
Crystal growTemperature: 298 K / Method: vapor diffusion, hanging drop / pH: 6.8
Details: 13% PEG 8000, 0.1M Ammonium sulfate, 2% Glycerol, 0.1M Cacodylate buffer pH 6.8, VAPOR DIFFUSION, HANGING DROP, temperature 298K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU MICROMAX-007 / Wavelength: 1.5418 Å
DetectorType: RIGAKU RAXIS IV++ / Detector: IMAGE PLATE / Date: Aug 25, 2006
RadiationMonochromator: confocal / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 1.9→50 Å / Num. all: 26390 / Num. obs: 26390 / % possible obs: 98 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 3 % / Biso Wilson estimate: 29.262 Å2 / Rmerge(I) obs: 0.066 / Rsym value: 0.066 / Net I/σ(I): 18
Reflection shellResolution: 1.9→1.97 Å / Redundancy: 3 % / Mean I/σ(I) obs: 2.8 / Num. unique all: 2662 / Rsym value: 0.383 / % possible all: 100

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Processing

Software
NameClassification
CrystalCleardata collection
BUSTER-TNTrefinement
HKL-2000data reduction
HKL-2000data scaling
BUSTER-TNTphasing
RefinementMethod to determine structure: FOURIER SYNTHESIS
Starting model: PDB entry 1IA8

1ia8


Resolution: 1.9→50 Å / Cross valid method: THROUGHOUT / Stereochemistry target values: Engh & Huber
RfactorNum. reflection% reflectionSelection details
Rfree0.2158 1326 5.03 %RANDOM
Rwork0.1819 ---
obs0.1836 26375 97.94 %-
Displacement parametersBiso mean: 39.78 Å2
Baniso -1Baniso -2Baniso -3
1-2.68696247 Å20 Å2-0.98765367 Å2
2--4.04991319 Å20 Å2
3----6.73687567 Å2
Refinement stepCycle: LAST / Resolution: 1.9→50 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2064 0 54 257 2375
Refine LS restraints
Refine-IDTypeDev idealNumberWeight
X-RAY DIFFRACTIONt_bond_d0.0121682
X-RAY DIFFRACTIONt_angle_deg1.07929232
X-RAY DIFFRACTIONt_dihedral_angle_d21.0744820
X-RAY DIFFRACTIONt_trig_c_planes0.011712
X-RAY DIFFRACTIONt_gen_planes0.0163035
X-RAY DIFFRACTIONt_it1.625216820
X-RAY DIFFRACTIONt_nbd0.047425
LS refinement shellResolution: 1.9→2.01 Å / Total num. of bins used: 9
RfactorNum. reflection% reflection
Rfree0.2546 234 5.48 %
Rwork0.2047 4039 -
all0.2074 4273 -
obs--97.94 %

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