9n2i

cryo-EM structure of GCGR-Gs complex with SRB103Q

Method: ELECTRON MICROSCOPY Dmax: 156.9 Å Quality: REASONABLE

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

Glucagon receptor

Homo sapiens

UniProt P47871

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 × 6 PDB declaration: hexameric(6) Consistent with protein copy count Chain R; UniProt 26–477 Not recorded Guanine nucleotide-binding protein G(s) subunit alpha isoforms short × 1 (P63092) Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 × 1 (P62873) Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 × 1 (P59768) Nb35 × 1 SRB103Q × 1 ELECTRON MICROSCOPY cryo-EM buffer:pH 7.4 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 3.00 Å

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.

25 other PDB entries and 29 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name GLR_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain R; PDBConstruct 17–468; UniProt 26–477

Guanine nucleotide-binding protein G(s) subunit alpha isoforms short

Homo sapiens

UniProt P63092

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 × 6 PDB declaration: hexameric(6) Consistent with protein copy count Chain A; UniProt 1–394 Mutation:S54N, G226A, E268A, N271K, K274D, R280K, T284D, I285T Glucagon receptor × 1 (P47871) Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 × 1 (P62873) Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 × 1 (P59768) Nb35 × 1 SRB103Q × 1 ELECTRON MICROSCOPY cryo-EM buffer:pH 7.4 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 3.00 Å

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.

348 other PDB entries and 356 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name GNAS2_HUMAN
Isoform
PDB entities 2
Chains and sequence ranges Author chain A; PDBConstruct 1–394; UniProt 1–394

Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1

Homo sapiens

UniProt P62873

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 × 6 PDB declaration: hexameric(6) Consistent with protein copy count Chain B; UniProt 2–340 Not recorded Glucagon receptor × 1 (P47871) Guanine nucleotide-binding protein G(s) subunit alpha isoforms short × 1 (P63092) Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 × 1 (P59768) Nb35 × 1 SRB103Q × 1 ELECTRON MICROSCOPY cryo-EM buffer:pH 7.4 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 3.00 Å

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.

1260 other PDB entries and 1263 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name GBB1_HUMAN
Isoform
PDB entities 3
Chains and sequence ranges Author chain B; PDBConstruct 12–350; UniProt 2–340

Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2

Homo sapiens

UniProt P59768

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 × 6 PDB declaration: hexameric(6) Consistent with protein copy count Chain G; UniProt 5–62 Not recorded Glucagon receptor × 1 (P47871) Guanine nucleotide-binding protein G(s) subunit alpha isoforms short × 1 (P63092) Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 × 1 (P62873) Nb35 × 1 SRB103Q × 1 ELECTRON MICROSCOPY cryo-EM buffer:pH 7.4 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 3.00 Å

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.

1233 other PDB entries and 1236 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name GBG2_HUMAN
Isoform
PDB entities 4
Chains and sequence ranges Author chain G; PDBConstruct 1–58; UniProt 5–62

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 9n2i

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 9n2i
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2. Structure Basics 2. Structure Basics

Entry ID entry_id9n2i
Deposition date deposition_date2025-01-28
Structure title titlecryo-EM structure of GCGR-Gs complex with SRB103Q
Keywords keywordsGPCR, peptide agonist, MEMBRANE PROTEIN; MEMBRANE PROTEIN
Experimental Method methodELECTRON MICROSCOPY

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

Radius of gyration Rg (Guinier) rg_guinier43.01
Radius of gyration Rg (electron density) rg_electron43.41
Forward intensity I(0) i0268272000.00
Molecular weight molecular_weight132850.0 kDa
Excluded volume excluded_volume166090 ų
Envelope volume envelope_volume231710 ų
Hydration-shell volume shell_volume48891 ų
Envelope diameter envelope_diameter169.0
Shell Rg shell_rg43.35
Envelope Rg envelope_rg43.85
Shape Rg shape_rg43.42
Total Rg total_rg43.39
Total atoms total_atoms9351
Residues n_residues1176
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 dmax156.9
Rg (real space) rg_real43.73
Rg uncertainty (real space) rg_real_error1.76
I(0) (real space) i0_real2.6830e+08
I(0) uncertainty (real space) i0_real_error5.1110e+06
Rg (reciprocal space) rg_reciprocal43.02
I(0) (reciprocal space) i0_reciprocal268100000.0000
Solution quality estimate total_estimate0.7411
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary38.2
Skewness Skewness skewness0.758
Kurtosis Kurtosis kurtosis0.009
Angular range angular_range— – 0.1850 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha42920000.0000
Real-space data points n_real_points38
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.476; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.602; Smooth: 0.599

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (7)

8. Citations (1)

9. Files and Curves (10)