8fmk

Crystal structure of human KRAS with extended switch I loop

Method: X-RAY DIFFRACTION Dmax: 53.2 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 Mutation:C118S GDP GUANOSINE-5'-DIPHOSPHATE × 1 MG MAGNESIUM ION × 1 CL CHLORIDE ION × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;293 K;(NH)4Cl 0.2 M PEG3350 20-24% Resolution 1.48 Å R-free 0.237

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 804 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 8–176; 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 8fmk

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 8fmk
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2. Structure Basics 2. Structure Basics

Entry ID entry_id8fmk
Deposition date deposition_date2022-12-23
Structure title titleCrystal structure of human KRAS with extended switch I loop
Keywords keywordscancer, Hydrolase; HYDROLASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier16.99
Radius of gyration Rg (electron density) rg_electron15.63
Forward intensity I(0) i08709180.00
Molecular weight molecular_weight20517.0 kDa
Excluded volume excluded_volume25191 ų
Envelope volume envelope_volume29024 ų
Hydration-shell volume shell_volume15413 ų
Envelope diameter envelope_diameter54.2
Shell Rg shell_rg21.85
Envelope Rg envelope_rg16.06
Shape Rg shape_rg15.65
Total Rg total_rg16.63
Total atoms total_atoms2753
Residues n_residues174
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 dmax53.2
Rg (real space) rg_real16.87
Rg uncertainty (real space) rg_real_error0.35
I(0) (real space) i0_real8.7090e+06
I(0) uncertainty (real space) i0_real_error1.1230e+05
Rg (reciprocal space) rg_reciprocal16.89
I(0) (reciprocal space) i0_reciprocal8709000.0000
Solution quality estimate total_estimate0.8113
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary47.6
Skewness Skewness skewness0.098
Kurtosis Kurtosis kurtosis-0.395
Angular range angular_range— – 0.4700 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha1990000.0000
Real-space data points n_real_points77
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.851; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.990; Smooth: 0.000

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (5)

8. Citations (1)

9. Files and Curves (10)