3d7m

Crystal Structure of the G Protein Fast-Exchange Double Mutant I56C/Q333C

Method: X-RAY DIFFRACTION Dmax: 73.2 Å Quality: GOOD

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

Guanine nucleotide-binding protein G(i), alpha-1 subunit

Rattus norvegicus

UniProt P10824

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 1–354 Mutation:I56C, Q333C MG MAGNESIUM ION × 1 ALF TETRAFLUOROALUMINATE ION × 1 GDP GUANOSINE-5'-DIPHOSPHATE × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.5;291 K;16% PEG 3350, 0.24 M Li(CH3COO), 0.1 M Bis-Tris, 0.01 M SrCl2, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K Resolution 2.90 Å R-free 0.294

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.

43 other PDB entries and 57 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name GNAI1_RAT
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–354; UniProt 1–354

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 3d7m

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 3d7m
Download Download

2. Structure Basics 2. Structure Basics

Entry ID entry_id3d7m
Deposition date deposition_date2008-05-21
Structure title titleCrystal Structure of the G Protein Fast-Exchange Double Mutant I56C/Q333C
Keywords keywordsnucleotide binding, allosteric, GTP-binding, Lipoprotein, Myristate, Nucleotide-binding, Palmitate, Transducer, 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_guinier21.23
Radius of gyration Rg (electron density) rg_electron20.45
Forward intensity I(0) i022184100.00
Molecular weight molecular_weight35527.0 kDa
Excluded volume excluded_volume44331 ų
Envelope volume envelope_volume51660 ų
Hydration-shell volume shell_volume21266 ų
Envelope diameter envelope_diameter72.4
Shell Rg shell_rg26.89
Envelope Rg envelope_rg20.78
Shape Rg shape_rg20.48
Total Rg total_rg21.24
Total atoms total_atoms2490
Residues n_residues305
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 dmax73.2
Rg (real space) rg_real21.22
Rg uncertainty (real space) rg_real_error0.37
I(0) (real space) i0_real2.2180e+07
I(0) uncertainty (real space) i0_real_error2.8300e+05
Rg (reciprocal space) rg_reciprocal21.22
I(0) (reciprocal space) i0_reciprocal22180000.0000
Solution quality estimate total_estimate0.8657
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary24.8
Skewness Skewness skewness0.383
Kurtosis Kurtosis kurtosis-0.162
Angular range angular_range— – 0.3750 −1
Current regularization parameter α current_alpha0.0002
Highest regularization parameter α highest_alpha4359000.0000
Real-space data points n_real_points69
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.760; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.977; Smooth: 0.994

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (5)

7. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

Domain ID domain_id3d7mA01
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_id3d7mA02
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology400 — GI Alpha 1, domain 2-like
Homologous superfamily homologous superfamily10 — GI Alpha 1, domain 2-like

8. Citations (1)

9. Files and Curves (10)