4obe

Crystal Structure of GDP-bound Human KRas

Method: X-RAY DIFFRACTION Dmax: 78.1 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 GDP GUANOSINE-5'-DIPHOSPHATE × 1 MG MAGNESIUM ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 8.5;293 K;0.2M Sodium Acetate pH4.5, 0.1M Tris pH 8.5, 26% PEG 3350, VAPOR DIFFUSION, HANGING DROP, temperature 293K Resolution 1.24 Å R-free 0.169
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 GDP GUANOSINE-5'-DIPHOSPHATE × 1 MG MAGNESIUM ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 8.5;293 K;0.2M Sodium Acetate pH4.5, 0.1M Tris pH 8.5, 26% PEG 3350, VAPOR DIFFUSION, HANGING DROP, temperature 293K Resolution 1.24 Å R-free 0.169

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
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 4obe

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 4obe
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2. Structure Basics 2. Structure Basics

Entry ID entry_id4obe
Deposition date deposition_date2014-01-07
Structure title titleCrystal Structure of GDP-bound Human KRas
Keywords keywordsSmall GTPase, signal transduction, GDP binding, GTP binding, HYDROLASE; HYDROLASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier22.21
Radius of gyration Rg (electron density) rg_electron21.18
Forward intensity I(0) i028181500.00
Molecular weight molecular_weight39087.0 kDa
Excluded volume excluded_volume48225 ų
Envelope volume envelope_volume57185 ų
Hydration-shell volume shell_volume22570 ų
Envelope diameter envelope_diameter83.9
Shell Rg shell_rg27.85
Envelope Rg envelope_rg21.45
Shape Rg shape_rg21.18
Total Rg total_rg22.01
Total atoms total_atoms5370
Residues n_residues339
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 dmax78.1
Rg (real space) rg_real22.21
Rg uncertainty (real space) rg_real_error0.56
I(0) (real space) i0_real2.8180e+07
I(0) uncertainty (real space) i0_real_error3.5460e+05
Rg (reciprocal space) rg_reciprocal22.21
I(0) (reciprocal space) i0_reciprocal28180000.0000
Solution quality estimate total_estimate0.7763
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks3
Primary peak position r_peak_primary26.8
Skewness Skewness skewness0.404
Kurtosis Kurtosis kurtosis-0.126
Angular range angular_range— – 0.3600 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha5637000.0000
Real-space data points n_real_points68
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.716; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.938; Smooth: 0.000

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

7. Fold Classification (SCOP + CATH) 5 domains

SCOP 2.08 (3 domains)

Domain ID domain_idd4obea_
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_idd4obeb1
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_idd4obeb2
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags

CATH v4.4 (2 domains)

Domain ID domain_id4obeA00
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_id4obeB00
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)