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- PDB-4epy: Discovery of Small Molecules that Bind to K-Ras and Inhibit Sos-m... -

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Entry
Database: PDB / ID: 4epy
TitleDiscovery of Small Molecules that Bind to K-Ras and Inhibit Sos-mediated Activation
ComponentsGTPase KRas
KeywordsHYDROLASE / Small molecule complex crystal structure / KRas / p21 / GTP-binding protein / oncogenes / binder / Inhibitor of Sos-mediated activation
Function / homology
Function and homology information


response to mineralocorticoid / GMP binding / forebrain astrocyte development / LRR domain binding / regulation of synaptic transmission, GABAergic / negative regulation of epithelial cell differentiation / response to isolation stress / response to gravity / epithelial tube branching involved in lung morphogenesis / type I pneumocyte differentiation ...response to mineralocorticoid / GMP binding / forebrain astrocyte development / LRR domain binding / regulation of synaptic transmission, GABAergic / negative regulation of epithelial cell differentiation / response to isolation stress / response to gravity / epithelial tube branching involved in lung morphogenesis / type I pneumocyte differentiation / Rac protein signal transduction / positive regulation of Rac protein signal transduction / Signaling by RAS GAP mutants / Signaling by RAS GTPase mutants / Activation of RAS in B cells / myoblast proliferation / skeletal muscle cell differentiation / RAS signaling downstream of NF1 loss-of-function variants / RUNX3 regulates p14-ARF / positive regulation of glial cell proliferation / SOS-mediated signalling / Activated NTRK3 signals through RAS / Activated NTRK2 signals through RAS / SHC1 events in ERBB4 signaling / cardiac muscle cell proliferation / Signalling to RAS / Activated NTRK2 signals through FRS2 and FRS3 / SHC-related events triggered by IGF1R / Estrogen-stimulated signaling through PRKCZ / glial cell proliferation / SHC-mediated cascade:FGFR3 / MET activates RAS signaling / SHC-mediated cascade:FGFR2 / PTK6 Regulates RHO GTPases, RAS GTPase and MAP kinases / Signaling by PDGFRA transmembrane, juxtamembrane and kinase domain mutants / Signaling by PDGFRA extracellular domain mutants / SHC-mediated cascade:FGFR4 / Erythropoietin activates RAS / SHC-mediated cascade:FGFR1 / Signaling by FGFR4 in disease / FRS-mediated FGFR3 signaling / Signaling by CSF3 (G-CSF) / Signaling by FLT3 ITD and TKD mutants / FRS-mediated FGFR2 signaling / FRS-mediated FGFR4 signaling / p38MAPK events / FRS-mediated FGFR1 signaling / Signaling by FGFR3 in disease / protein-membrane adaptor activity / Tie2 Signaling / striated muscle cell differentiation / Signaling by FGFR2 in disease / GRB2 events in EGFR signaling / SHC1 events in EGFR signaling / Signaling by FLT3 fusion proteins / FLT3 Signaling / Signaling by FGFR1 in disease / EGFR Transactivation by Gastrin / NCAM signaling for neurite out-growth / homeostasis of number of cells within a tissue / CD209 (DC-SIGN) signaling / GRB2 events in ERBB2 signaling / Downstream signal transduction / Insulin receptor signalling cascade / SHC1 events in ERBB2 signaling / Ras activation upon Ca2+ influx through NMDA receptor / response to glucocorticoid / Constitutive Signaling by Overexpressed ERBB2 / Signaling by phosphorylated juxtamembrane, extracellular and kinase domain KIT mutants / VEGFR2 mediated cell proliferation / small monomeric GTPase / FCERI mediated MAPK activation / liver development / Signaling by ERBB2 TMD/JMD mutants / female pregnancy / RAF activation / Signaling by SCF-KIT / Signaling by high-kinase activity BRAF mutants / Constitutive Signaling by EGFRvIII / regulation of long-term neuronal synaptic plasticity / MAP2K and MAPK activation / Signaling by ERBB2 ECD mutants / Signaling by ERBB2 KD Mutants / visual learning / cytoplasmic side of plasma membrane / cytokine-mediated signaling pathway / Regulation of RAS by GAPs / Signaling by CSF1 (M-CSF) in myeloid cells / RAS processing / Negative regulation of MAPK pathway / Signaling by RAF1 mutants / Signaling by moderate kinase activity BRAF mutants / Paradoxical activation of RAF signaling by kinase inactive BRAF / Signaling downstream of RAS mutants / GDP binding / Signaling by BRAF and RAF1 fusions / positive regulation of cellular senescence / DAP12 signaling / MAPK cascade / Constitutive Signaling by Ligand-Responsive EGFR Cancer Variants
Similarity search - Function
Small GTPase, Ras-type / Small GTPase Ras domain profile. / Ran (Ras-related nuclear proteins) /TC4 subfamily of small GTPases / Rho (Ras homology) subfamily of Ras-like small GTPases / Ras subfamily of RAS small GTPases / Small GTPase / Ras family / Rab subfamily of small GTPases / Small GTP-binding protein domain / P-loop containing nucleotide triphosphate hydrolases ...Small GTPase, Ras-type / Small GTPase Ras domain profile. / Ran (Ras-related nuclear proteins) /TC4 subfamily of small GTPases / Rho (Ras homology) subfamily of Ras-like small GTPases / Ras subfamily of RAS small GTPases / Small GTPase / Ras family / Rab subfamily of small GTPases / Small GTP-binding protein domain / P-loop containing nucleotide triphosphate hydrolases / Rossmann fold / P-loop containing nucleoside triphosphate hydrolase / 3-Layer(aba) Sandwich / Alpha Beta
Similarity search - Domain/homology
Chem-0QY / GUANOSINE-5'-DIPHOSPHATE / GTPase KRas
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 1.801 Å
AuthorsSun, Q. / Burke, J.P. / Phan, J. / Burns, M.C. / Olejniczak, E.T. / Waterson, A.G. / Lee, T. / Rossanese, O.W. / Fesik, S.W.
CitationJournal: Angew.Chem.Int.Ed.Engl. / Year: 2012
Title: Discovery of Small Molecules that Bind to K-Ras and Inhibit Sos-Mediated Activation.
Authors: Sun, Q. / Burke, J.P. / Phan, J. / Burns, M.C. / Olejniczak, E.T. / Waterson, A.G. / Lee, T. / Rossanese, O.W. / Fesik, S.W.
History
DepositionApr 17, 2012Deposition site: RCSB / Processing site: RCSB
Revision 1.0May 23, 2012Provider: repository / Type: Initial release
Revision 1.1Jul 25, 2012Group: Database references
Revision 1.2Sep 13, 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 / pdbx_struct_conn_angle / struct_conn / 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 / _pdbx_struct_conn_angle.ptnr1_auth_comp_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_id / _pdbx_struct_conn_angle.ptnr1_label_asym_id / _pdbx_struct_conn_angle.ptnr1_label_atom_id / _pdbx_struct_conn_angle.ptnr1_label_comp_id / _pdbx_struct_conn_angle.ptnr1_label_seq_id / _pdbx_struct_conn_angle.ptnr3_auth_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_asym_id / _pdbx_struct_conn_angle.ptnr3_label_atom_id / _pdbx_struct_conn_angle.ptnr3_label_comp_id / _pdbx_struct_conn_angle.ptnr3_label_seq_id / _pdbx_struct_conn_angle.value / _struct_conn.pdbx_dist_value / _struct_conn.ptnr1_auth_comp_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr1_label_comp_id / _struct_conn.ptnr1_label_seq_id / _struct_conn.ptnr2_auth_comp_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id / _struct_conn.ptnr2_label_atom_id / _struct_conn.ptnr2_label_comp_id / _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: GTPase KRas
hetero molecules


Theoretical massNumber of molelcules
Total (without water)20,1824
Polymers19,3551
Non-polymers8273
Water5,080282
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPISA
Unit cell
Length a, b, c (Å)38.982, 41.481, 91.663
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 GTPase KRas / K-Ras 2 / Ki-Ras / c-K-ras / c-Ki-ras / GTPase KRas / N-terminally processed


Mass: 19354.824 Da / Num. of mol.: 1 / Mutation: G12V, C118S
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: KRAS, KRAS2, RASK2 / Production host: Escherichia coli (E. coli) / References: UniProt: P01116, small monomeric GTPase
#2: Chemical ChemComp-GDP / GUANOSINE-5'-DIPHOSPHATE


Type: RNA linking / Mass: 443.201 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C10H15N5O11P2 / Comment: GDP, energy-carrying molecule*YM
#3: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Mg
#4: Chemical ChemComp-0QY / N-[2-(1H-indol-3-ylmethyl)-1H-benzimidazol-5-yl]-L-prolinamide


Mass: 359.424 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C21H21N5O
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 282 / 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: 1.91 Å3/Da / Density % sol: 35.75 %
Crystal growTemperature: 291 K / Method: vapor diffusion, sitting drop / pH: 4
Details: 28% PEG4000, 0.1 M MMT, 0.2 M ammonium chloride, VAPOR DIFFUSION, SITTING DROP, temperature 291K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: ROTATING ANODE / Type: BRUKER AXS MICROSTAR / Wavelength: 1.5418 Å
DetectorType: Bruker Platinum 135 / Detector: CCD / Date: Nov 5, 2011
RadiationMonochromator: Montel confocal, multi-layer mirrors / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 1.8→27.13 Å / Num. all: 14390 / Num. obs: 13808 / % possible obs: 96 % / Observed criterion σ(F): 0 / Observed criterion σ(I): -3 / Rmerge(I) obs: 0.087 / Net I/σ(I): 13.8
Reflection shellResolution: 1.8→1.83 Å / Redundancy: 1.3 % / Rmerge(I) obs: 0.098 / Mean I/σ(I) obs: 7 / % possible all: 39.8

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Processing

Software
NameVersionClassification
PROTEUM PLUSPLUSdata collection
PHASERphasing
PHENIX(phenix.refine: 1.7.2_869)refinement
HKL-2000data reduction
HKL-2000data scaling
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 4EPV

4epv


Resolution: 1.801→27.13 Å / SU ML: 0.38 / σ(F): 1.34 / Phase error: 17.13 / Stereochemistry target values: ML
RfactorNum. reflection% reflection
Rfree0.1991 690 5.02 %
Rwork0.1606 --
obs0.1625 13753 95.96 %
all-14390 -
Solvent computationShrinkage radii: 0.86 Å / VDW probe radii: 1.1 Å / Solvent model: FLAT BULK SOLVENT MODEL / Bsol: 29.295 Å2 / ksol: 0.327 e/Å3
Displacement parameters
Baniso -1Baniso -2Baniso -3
1--3.196 Å20 Å20 Å2
2--2.5412 Å20 Å2
3---0.6548 Å2
Refinement stepCycle: LAST / Resolution: 1.801→27.13 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1358 0 56 282 1696
Refine LS restraints
Refine-IDTypeDev idealNumber
X-RAY DIFFRACTIONf_bond_d0.0041440
X-RAY DIFFRACTIONf_angle_d0.8291951
X-RAY DIFFRACTIONf_dihedral_angle_d15.672540
X-RAY DIFFRACTIONf_chiral_restr0.053214
X-RAY DIFFRACTIONf_plane_restr0.003247
LS refinement shell
Resolution (Å)Rfactor RfreeNum. reflection RfreeRfactor RworkNum. reflection RworkRefine-ID% reflection obs (%)
1.8014-1.94040.25591210.19762113X-RAY DIFFRACTION80
1.9404-2.13560.21171410.16132665X-RAY DIFFRACTION100
2.1356-2.44450.21991340.16242709X-RAY DIFFRACTION100
2.4445-3.07910.19971510.16072705X-RAY DIFFRACTION100
3.0791-27.13680.16851430.15132871X-RAY DIFFRACTION100

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