6b0v

Crystal Structure of small molecule ARS-107 covalently bound to K-Ras G12C

Method: X-RAY DIFFRACTION Dmax: 76.2 Å Quality: GOOD

1. Protein Identity and Related Structures Protein Identity & Related Structures

GTPase KRas

Homo sapiens

UniProt P01116

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain A; UniProt 1–169 Fragment:UNP residues 1-169 Mutation:G12C, C51S, C80L, C118S CA CALCIUM ION × 2 C8G 1-[3-(4-{[(4,5-dichloro-2-hydroxyphenyl)amino]acetyl}piperazin-1-yl)azetidin-1-yl]propan-1-one × 1 GDP GUANOSINE-5'-DIPHOSPHATE × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 8.5;293 K;29% PEG 4000, 0.2 M CaCl2, 0.1 M Tris pH=8.5 Resolution 1.29 Å R-free 0.218
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain B; UniProt 1–169 Fragment:UNP residues 1-169 Mutation:G12C, C51S, C80L, C118S CA CALCIUM ION × 2 C8G 1-[3-(4-{[(4,5-dichloro-2-hydroxyphenyl)amino]acetyl}piperazin-1-yl)azetidin-1-yl]propan-1-one × 1 GDP GUANOSINE-5'-DIPHOSPHATE × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 8.5;293 K;29% PEG 4000, 0.2 M CaCl2, 0.1 M Tris pH=8.5 Resolution 1.29 Å R-free 0.218

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

445 other PDB entries and 803 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name RASK_HUMAN
Isoform P01116-2
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 2–170; UniProt 1–169 Author chain B; PDBConstruct 2–170; UniProt 1–169

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

SAXS scattering curve SAXS Profile

SAXS profile for 6b0v

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 6b0v
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2. Structure Basics 2. Structure Basics

Entry ID entry_id6b0v
Deposition date deposition_date2017-09-15
Structure title titleCrystal Structure of small molecule ARS-107 covalently bound to K-Ras G12C
Keywords keywordssmall GTPase domain, covalent inhibitor bound, switch II pocket, GDP bound, SIGNALING PROTEIN; SIGNALING PROTEIN
Experimental Method methodX-RAY DIFFRACTION

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier23.40
Radius of gyration Rg (electron density) rg_electron22.86
Forward intensity I(0) i027863500.00
Molecular weight molecular_weight39381.0 kDa
Excluded volume excluded_volume48769 ų
Envelope volume envelope_volume57220 ų
Hydration-shell volume shell_volume21673 ų
Envelope diameter envelope_diameter79.8
Shell Rg shell_rg28.77
Envelope Rg envelope_rg22.82
Shape Rg shape_rg22.88
Total Rg total_rg23.53
Total atoms total_atoms2756
Residues n_residues334
Spherical-harmonic order n_harmonics20
q range q_range— – 0.5000 −1
Data points n_points101
Shell type shell_typedirectional
Solvent electron density solvent_density0.3340 e/ų
Shell contrast contrast_shell0.0300 e/ų
CRYSOL version crysol_version4.1.3

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax76.2
Rg (real space) rg_real23.47
Rg uncertainty (real space) rg_real_error0.60
I(0) (real space) i0_real2.7860e+07
I(0) uncertainty (real space) i0_real_error3.6940e+05
Rg (reciprocal space) rg_reciprocal23.45
I(0) (reciprocal space) i0_reciprocal27860000.0000
Solution quality estimate total_estimate0.8070
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary25.8
Skewness Skewness skewness0.438
Kurtosis Kurtosis kurtosis-0.332
Angular range angular_range— – 0.3400 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha4151000.0000
Real-space data points n_real_points66
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.841; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.964; Smooth: 0.000

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (5)

7. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd6b0va_
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamilyc.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family familyc.37.1.8 — G proteins
Domain ID domain_idd6b0vb_
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamilyc.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family familyc.37.1.8 — G proteins

CATH v4.4 (2 domains)

Domain ID domain_id6b0vA00
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily300 — P-loop containing nucleotide triphosphate hydrolases
Domain ID domain_id6b0vB00
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily300 — P-loop containing nucleotide triphosphate hydrolases

8. Citations (1)

9. Files and Curves (10)