6pgo

Crystal structure of human KRAS G12C covalently bound to a phthalazine inhibitor

Method: X-RAY DIFFRACTION Dmax: 76.8 Å Quality: REASONABLE

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 Mutation:C51S,C80L,C118S MG MAGNESIUM ION × 1 GDP GUANOSINE-5'-DIPHOSPHATE × 1 OJ1 1-{4-[7-chloro-6-(2-fluoro-6-hydroxyphenyl)-4-phenylphthalazin-1-yl]piperazin-1-yl}propan-1-one × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 5.6;293 K;0.2M ammonium acetate, 0.1M sodium citrate pH5.6, 32% PEG 400, 5mM magnesium chloride Resolution 1.60 Å R-free 0.231
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain B; UniProt 1–169 Mutation:C51S,C80L,C118S MG MAGNESIUM ION × 1 GDP GUANOSINE-5'-DIPHOSPHATE × 1 OJ1 1-{4-[7-chloro-6-(2-fluoro-6-hydroxyphenyl)-4-phenylphthalazin-1-yl]piperazin-1-yl}propan-1-one × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 5.6;293 K;0.2M ammonium acetate, 0.1M sodium citrate pH5.6, 32% PEG 400, 5mM magnesium chloride Resolution 1.60 Å R-free 0.231

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 15–183; UniProt 1–169 Author chain B; PDBConstruct 15–183; 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 6pgo

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id6pgo
Deposition date deposition_date2019-06-24
Structure title titleCrystal structure of human KRAS G12C covalently bound to a phthalazine inhibitor
Keywords keywordsInhibitor, GTPase, SIGNALING PROTEIN, SIGNALING PROTEIN-Inhibitor complex; SIGNALING PROTEIN/Inhibitor
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier23.46
Radius of gyration Rg (electron density) rg_electron22.57
Forward intensity I(0) i025150900.00
Molecular weight molecular_weight37287.0 kDa
Excluded volume excluded_volume46284 ų
Envelope volume envelope_volume55368 ų
Hydration-shell volume shell_volume21315 ų
Envelope diameter envelope_diameter78.1
Shell Rg shell_rg28.51
Envelope Rg envelope_rg22.59
Shape Rg shape_rg22.57
Total Rg total_rg23.31
Total atoms total_atoms2617
Residues n_residues312
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 dmax76.8
Rg (real space) rg_real23.53
Rg uncertainty (real space) rg_real_error0.48
I(0) (real space) i0_real2.5150e+07
I(0) uncertainty (real space) i0_real_error3.7060e+05
Rg (reciprocal space) rg_reciprocal23.52
I(0) (reciprocal space) i0_reciprocal25150000.0000
Solution quality estimate total_estimate0.6794
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary24.8
Skewness Skewness skewness0.408
Kurtosis Kurtosis kurtosis-0.439
Angular range angular_range— – 0.3400 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha4376000.0000
Real-space data points n_real_points66
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.850; Stabil: 1.000; Sysdev: 0.115; Positv: 1.000; Valcen: 0.951; Smooth: 0.982

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_idd6pgoa_
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.37.1.0 — automated matches
Domain ID domain_idd6pgob_
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.37.1.0 — automated matches

CATH v4.4 (2 domains)

Domain ID domain_id6pgoA00
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_id6pgoB00
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)