2gtp

Crystal structure of the heterodimeric complex of human RGS1 and activated Gi alpha 1

Method: X-RAY DIFFRACTION Dmax: 119.2 Å Quality: GOOD

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

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

Homo sapiens

UniProt P63096

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 heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain A; UniProt 31–353 Not recorded Regulator of G-protein signaling 1 × 1 (Q08116) ALF TETRAFLUOROALUMINATE ION × 1 MG MAGNESIUM ION × 1 GDP GUANOSINE-5'-DIPHOSPHATE × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 6.5;293 K;0.2M NaNO3, 0.1M bis-Tris propane, pH 6.5, 20 % PEG3350, 10 % Ethylene glycol, VAPOR DIFFUSION, SITTING DROP, temperature 293K Resolution 2.55 Å R-free 0.276
2 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain B; UniProt 31–353 Not recorded Regulator of G-protein signaling 1 × 1 (Q08116) ALF TETRAFLUOROALUMINATE ION × 1 MG MAGNESIUM ION × 1 GDP GUANOSINE-5'-DIPHOSPHATE × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 6.5;293 K;0.2M NaNO3, 0.1M bis-Tris propane, pH 6.5, 20 % PEG3350, 10 % Ethylene glycol, VAPOR DIFFUSION, SITTING DROP, temperature 293K Resolution 2.55 Å R-free 0.276

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.

573 other PDB entries and 590 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name GNAI1_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–323; UniProt 31–353 Author chain B; PDBConstruct 1–323; UniProt 31–353

Regulator of G-protein signaling 1

Homo sapiens

UniProt Q08116

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 heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain D; UniProt 50–192 Not recorded Guanine nucleotide-binding protein G(i), alpha-1 subunit × 1 (P63096) ALF TETRAFLUOROALUMINATE ION × 1 MG MAGNESIUM ION × 1 GDP GUANOSINE-5'-DIPHOSPHATE × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 6.5;293 K;0.2M NaNO3, 0.1M bis-Tris propane, pH 6.5, 20 % PEG3350, 10 % Ethylene glycol, VAPOR DIFFUSION, SITTING DROP, temperature 293K Resolution 2.55 Å R-free 0.276
2 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain C; UniProt 50–192 Not recorded Guanine nucleotide-binding protein G(i), alpha-1 subunit × 1 (P63096) ALF TETRAFLUOROALUMINATE ION × 1 MG MAGNESIUM ION × 1 GDP GUANOSINE-5'-DIPHOSPHATE × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 6.5;293 K;0.2M NaNO3, 0.1M bis-Tris propane, pH 6.5, 20 % PEG3350, 10 % Ethylene glycol, VAPOR DIFFUSION, SITTING DROP, temperature 293K Resolution 2.55 Å R-free 0.276

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.

1 other PDB entries and 2 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name RGS1_HUMAN
Isoform
PDB entities 2
Chains and sequence ranges Author chain C; PDBConstruct 3–145; UniProt 50–192 Author chain D; PDBConstruct 3–145; UniProt 50–192

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 2gtp

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 2gtp
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2. Structure Basics 2. Structure Basics

Entry ID entry_id2gtp
Deposition date deposition_date2006-04-28
Structure title titleCrystal structure of the heterodimeric complex of human RGS1 and activated Gi alpha 1
Keywords keywords;G protein signalling, RGS, heterotrimeric G protein, signalling complex, Structural Genomics, Structural Genomics Consortium, SGC, 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_guinier38.87
Radius of gyration Rg (electron density) rg_electron38.60
Forward intensity I(0) i0154845000.00
Molecular weight molecular_weight100630.0 kDa
Excluded volume excluded_volume125570 ų
Envelope volume envelope_volume170280 ų
Hydration-shell volume shell_volume37478 ų
Envelope diameter envelope_diameter123.9
Shell Rg shell_rg43.82
Envelope Rg envelope_rg37.35
Shape Rg shape_rg38.60
Total Rg total_rg38.94
Total atoms total_atoms7075
Residues n_residues891
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 dmax119.2
Rg (real space) rg_real39.08
Rg uncertainty (real space) rg_real_error0.92
I(0) (real space) i0_real1.5480e+08
I(0) uncertainty (real space) i0_real_error2.8740e+06
Rg (reciprocal space) rg_reciprocal38.96
I(0) (reciprocal space) i0_reciprocal154800000.0000
Solution quality estimate total_estimate0.8087
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary32.0
Skewness Skewness skewness0.278
Kurtosis Kurtosis kurtosis-0.900
Angular range angular_range— – 0.2050 −1
Current regularization parameter α current_alpha0.0001
Highest regularization parameter α highest_alpha18460000.0000
Real-space data points n_real_points42
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.822; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.848; Smooth: 0.196

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (6)

7. Fold Classification (SCOP + CATH) 14 domains

SCOP 2.08 (6 domains)

Domain ID domain_idd2gtpa1
Class classa — All alpha proteins
Fold Fold folda.66 — Transducin (alpha subunit), insertion domain
Superfamily Superfamily superfamilya.66.1 — Transducin (alpha subunit), insertion domain
Family Family familya.66.1.1 — Transducin (alpha subunit), insertion domain
Domain ID domain_idd2gtpa2
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_idd2gtpb1
Class classa — All alpha proteins
Fold Fold folda.66 — Transducin (alpha subunit), insertion domain
Superfamily Superfamily superfamilya.66.1 — Transducin (alpha subunit), insertion domain
Family Family familya.66.1.1 — Transducin (alpha subunit), insertion domain
Domain ID domain_idd2gtpb2
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_idd2gtpc_
Class classa — All alpha proteins
Fold Fold folda.91 — Regulator of G-protein signaling, RGS
Superfamily Superfamily superfamilya.91.1 — Regulator of G-protein signaling, RGS
Family Family familya.91.1.0 — automated matches
Domain ID domain_idd2gtpd_
Class classa — All alpha proteins
Fold Fold folda.91 — Regulator of G-protein signaling, RGS
Superfamily Superfamily superfamilya.91.1 — Regulator of G-protein signaling, RGS
Family Family familya.91.1.0 — automated matches

CATH v4.4 (8 domains)

Domain ID domain_id2gtpA01
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_id2gtpA02
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
Domain ID domain_id2gtpB01
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_id2gtpB02
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
Domain ID domain_id2gtpC01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology196 — Regulator of G-protein Signalling 4; domain 1
Homologous superfamily homologous superfamily10
Domain ID domain_id2gtpC02
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology167 — Regulator of G-protein Signalling 4; domain 2
Homologous superfamily homologous superfamily10 — Regulator of G-protein Signalling 4, domain 2
Domain ID domain_id2gtpD01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology196 — Regulator of G-protein Signalling 4; domain 1
Homologous superfamily homologous superfamily10
Domain ID domain_id2gtpD02
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology167 — Regulator of G-protein Signalling 4; domain 2
Homologous superfamily homologous superfamily10 — Regulator of G-protein Signalling 4, domain 2

8. Citations (1)

9. Files and Curves (10)