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- PDB-1pxi: HUMAN CYCLIN DEPENDENT KINASE 2 COMPLEXED WITH THE INHIBITOR 4-(2... -

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Basic information

Entry
Database: PDB / ID: 1pxi
TitleHUMAN CYCLIN DEPENDENT KINASE 2 COMPLEXED WITH THE INHIBITOR 4-(2,5-Dichloro-thiophen-3-yl)-pyrimidin-2-ylamine
ComponentsCell division protein kinase 2
KeywordsTRANSFERASE / PROTEIN KINASE / CELL CYCLE / PHOSPHORYLATION / CELL DIVISION / MITOSIS / INHIBITION / SERINE/THREONINE-PROTEIN KINASE / ATP-BINDING / 3D-STRUCTURE.
Function / homology
Function and homology information


cyclin A1-CDK2 complex / cyclin E2-CDK2 complex / cyclin E1-CDK2 complex / cyclin A2-CDK2 complex / positive regulation of DNA-templated DNA replication initiation / cyclin-dependent protein kinase activity / G2 Phase / Y chromosome / Phosphorylation of proteins involved in G1/S transition by active Cyclin E:Cdk2 complexes / positive regulation of heterochromatin formation ...cyclin A1-CDK2 complex / cyclin E2-CDK2 complex / cyclin E1-CDK2 complex / cyclin A2-CDK2 complex / positive regulation of DNA-templated DNA replication initiation / cyclin-dependent protein kinase activity / G2 Phase / Y chromosome / Phosphorylation of proteins involved in G1/S transition by active Cyclin E:Cdk2 complexes / positive regulation of heterochromatin formation / p53-Dependent G1 DNA Damage Response / X chromosome / PTK6 Regulates Cell Cycle / regulation of anaphase-promoting complex-dependent catabolic process / Defective binding of RB1 mutants to E2F1,(E2F2, E2F3) / centriole replication / Regulation of APC/C activators between G1/S and early anaphase / telomere maintenance in response to DNA damage / centrosome duplication / Telomere Extension By Telomerase / G0 and Early G1 / Activation of the pre-replicative complex / cyclin-dependent kinase / cyclin-dependent protein serine/threonine kinase activity / TP53 Regulates Transcription of Genes Involved in G1 Cell Cycle Arrest / Regulation of MITF-M-dependent genes involved in cell cycle and proliferation / Activation of ATR in response to replication stress / Cajal body / Cyclin A/B1/B2 associated events during G2/M transition / Cyclin E associated events during G1/S transition / Cyclin A:Cdk2-associated events at S phase entry / cyclin-dependent protein kinase holoenzyme complex / condensed chromosome / mitotic G1 DNA damage checkpoint signaling / regulation of G2/M transition of mitotic cell cycle / regulation of mitotic cell cycle / cellular response to nitric oxide / post-translational protein modification / cyclin binding / positive regulation of DNA replication / male germ cell nucleus / meiotic cell cycle / potassium ion transport / DNA Damage/Telomere Stress Induced Senescence / CDK-mediated phosphorylation and removal of Cdc6 / Meiotic recombination / SCF(Skp2)-mediated degradation of p27/p21 / G1/S transition of mitotic cell cycle / Orc1 removal from chromatin / Transcriptional regulation of granulopoiesis / G2/M transition of mitotic cell cycle / Cyclin D associated events in G1 / cellular senescence / Regulation of TP53 Degradation / nuclear envelope / Factors involved in megakaryocyte development and platelet production / Processing of DNA double-strand break ends / Senescence-Associated Secretory Phenotype (SASP) / regulation of gene expression / peptidyl-serine phosphorylation / Regulation of TP53 Activity through Phosphorylation / transcription regulator complex / Ras protein signal transduction / DNA replication / chromosome, telomeric region / endosome / chromatin remodeling / protein domain specific binding / protein phosphorylation / cell division / protein serine/threonine kinase activity / protein serine kinase activity / DNA repair / DNA-templated transcription / centrosome / positive regulation of cell population proliferation / positive regulation of DNA-templated transcription / negative regulation of transcription by RNA polymerase II / magnesium ion binding / signal transduction / nucleoplasm / ATP binding / nucleus / cytosol / cytoplasm
Similarity search - Function
: / Phosphorylase Kinase; domain 1 / Serine/threonine-protein kinase, active site / Serine/Threonine protein kinases active-site signature. / Phosphorylase Kinase; domain 1 / Transferase(Phosphotransferase) domain 1 / Transferase(Phosphotransferase); domain 1 / Protein kinase domain / Serine/Threonine protein kinases, catalytic domain / Protein kinase, ATP binding site ...: / Phosphorylase Kinase; domain 1 / Serine/threonine-protein kinase, active site / Serine/Threonine protein kinases active-site signature. / Phosphorylase Kinase; domain 1 / Transferase(Phosphotransferase) domain 1 / Transferase(Phosphotransferase); domain 1 / 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
4-(2,5-DICHLOROTHIEN-3-YL)PYRIMIDIN-2-AMINE / Cyclin-dependent kinase 2
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.95 Å
AuthorsWu, S.Y. / McNae, I. / Kontopidis, G. / McClue, S.J. / McInnes, C. / Stewart, K.J. / Wang, S. / Zheleva, D.I. / Marriage, H. / Lane, D.P. ...Wu, S.Y. / McNae, I. / Kontopidis, G. / McClue, S.J. / McInnes, C. / Stewart, K.J. / Wang, S. / Zheleva, D.I. / Marriage, H. / Lane, D.P. / Taylor, P. / Fischer, P.M. / Walkinshaw, M.D.
CitationJournal: Structure / Year: 2003
Title: Discovery of a novel family of CDK inhibitors with the program LIDAEUS: structural basis for ligand-induced disordering of the activation loop
Authors: Wu, S.Y. / McNae, I. / Kontopidis, G. / McClue, S.J. / McInnes, C. / Stewart, K.J. / Wang, S. / Zheleva, D.I. / Marriage, H. / Lane, D.P. / Taylor, P. / Fischer, P.M. / Walkinshaw, M.D.
History
DepositionJul 4, 2003Deposition site: RCSB / Processing site: RCSB
Revision 1.0Dec 9, 2003Provider: repository / Type: Initial release
Revision 1.1Apr 29, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Aug 16, 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_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _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

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Assembly

Deposited unit
A: Cell division protein kinase 2
hetero molecules


Theoretical massNumber of molelcules
Total (without water)34,2232
Polymers33,9761
Non-polymers2461
Water4,522251
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)53.499, 71.404, 72.356
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121

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Components

#1: Protein Cell division protein kinase 2 / p33 protein kinase


Mass: 33976.488 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CDK2 / Production host: Spodoptera frugiperda (fall armyworm) / Strain (production host): Hi5
References: UniProt: P24941, Transferases; Transferring phosphorus-containing groups; Phosphotransferases with an alcohol group as acceptor
#2: Chemical ChemComp-CK1 / 4-(2,5-DICHLOROTHIEN-3-YL)PYRIMIDIN-2-AMINE / 4-(2,5-DICHLORO-THIOPHEN-3-YL)-PYRIMIDIN-2-YLAMINE


Mass: 246.116 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C8H5Cl2N3S
#3: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 251 / 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: 2.03 Å3/Da / Density % sol: 39.49 %
Crystal growTemperature: 277 K / Method: vapor diffusion, hanging drop / pH: 7.8
Details: PEG 6000, NA-HEPES, pH 7.8, VAPOR DIFFUSION, HANGING DROP, temperature 277K
Crystal grow
*PLUS
Method: vapor diffusion, hanging drop / PH range low: 8.2 / PH range high: 7.8
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDDetails
17-8 mg/mlprotein1drop
215 %PEG60001reservoir
3100 mMsodium HEPES1reservoirpH7.8-8.2

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: SRS / Beamline: PX14.1 / Wavelength: 1.488 Å
DetectorType: ADSC QUANTUM 4 / Detector: CCD / Date: Sep 1, 2001
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.488 Å / Relative weight: 1
ReflectionResolution: 1.95→20 Å / Num. all: 20770 / Num. obs: 20770 / % possible obs: 98.8 % / Redundancy: 12.05 % / Biso Wilson estimate: 13.5 Å2 / Rmerge(I) obs: 0.078 / Net I/σ(I): 17.9
Reflection shellResolution: 1.95→1.98 Å / Rmerge(I) obs: 0.244 / Mean I/σ(I) obs: 6.61 / % possible all: 100
Reflection
*PLUS
Lowest resolution: 20 Å / Num. measured all: 253672
Reflection shell
*PLUS
% possible obs: 100 %

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Processing

Software
NameVersionClassification
CNS1refinement
DENZOdata reduction
SCALEPACKdata scaling
MOLREPphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 1HCL

1hcl


Resolution: 1.95→19.89 Å / Rfactor Rfree error: 0.008 / Data cutoff high absF: 1552241.76 / Data cutoff high rms absF: 1552241.76 / Data cutoff low absF: 0 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0
Details: RESIDUES 37 - 40 ARE NOT VISIBLE IN THE ELECTRON DENSITY MAP
RfactorNum. reflection% reflectionSelection details
Rfree0.251 998 4.9 %RANDOM
Rwork0.203 ---
all0.203 ---
obs0.203 20564 98.9 %-
Solvent computationSolvent model: FLAT MODEL / Bsol: 45.8169 Å2 / ksol: 0.345562 e/Å3
Displacement parametersBiso mean: 26.1 Å2
Baniso -1Baniso -2Baniso -3
1--0.31 Å20 Å20 Å2
2---1.27 Å20 Å2
3---1.59 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.28 Å0.22 Å
Luzzati d res low-5 Å
Luzzati sigma a0.11 Å0.09 Å
Refinement stepCycle: LAST / Resolution: 1.95→19.89 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2365 0 14 251 2630
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONc_bond_d0.005
X-RAY DIFFRACTIONc_angle_deg1.2
X-RAY DIFFRACTIONc_dihedral_angle_d22.4
X-RAY DIFFRACTIONc_improper_angle_d0.79
X-RAY DIFFRACTIONc_mcbond_it1.531.5
X-RAY DIFFRACTIONc_mcangle_it2.442
X-RAY DIFFRACTIONc_scbond_it2.222
X-RAY DIFFRACTIONc_scangle_it3.242.5
LS refinement shellResolution: 1.95→2.07 Å / Rfactor Rfree error: 0.021 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.261 160 4.7 %
Rwork0.213 3248 -
obs-3248 100 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1PROTEIN_REP.PARAMPROTEIN.TOP
X-RAY DIFFRACTION2CK1_PAR.TXTCK1_TOP.TXT
X-RAY DIFFRACTION3WATER_REP.PARAMWATER.TOP
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONc_dihedral_angle_d
X-RAY DIFFRACTIONc_dihedral_angle_deg22.4
X-RAY DIFFRACTIONc_improper_angle_d
X-RAY DIFFRACTIONc_improper_angle_deg0.79

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