8g23

Structure of Ternary Complex of cGAS with dsDNA and Bound pppIpA

Method: X-RAY DIFFRACTION Dmax: 94.3 Å Quality: GOOD

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

Cyclic GMP-AMP synthase

Mus musculus

UniProt Q8C6L5

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–DNA Homooligomer Protein × 2 DNA 4 PDB declaration: hexameric(6) Consistent with all polymer counts Chain A; UniProt 147–507 Chain C; UniProt 147–507 Fragment:catalytic domain, residues 147-507 Palindromic DNA18 × 4 ATP ADENOSINE-5'-TRIPHOSPHATE × 1 MG MAGNESIUM ION × 2 ZN ZINC ION × 2 VWX [[(2~{R},3~{R},4~{R},5~{R})-4-[[(2~{R},3~{S},4~{R},5~{R})-5-(6-aminopurin-9-yl)-3,4-bis(oxidanyl)oxolan-2-yl]methoxy-oxidanyl-phosphoryl]oxy-3-oxidanyl-5-(6-oxidanylidene-1~{H}-purin-9-yl)oxolan-2-yl]methoxy-oxidanyl-phosphoryl] phosphono hydrogen phosphate × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.5;277.15 K;0.2 M ammonium acetate, 32% MPD, with 0.1 M Bis-Tris pH 6.5 Resolution 2.71 Å R-free 0.248

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.

55 other PDB entries and 63 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name CGAS_MOUSE
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 4–364; UniProt 147–507 Author chain C; PDBConstruct 4–364; UniProt 147–507

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 8g23

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 8g23
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2. Structure Basics 2. Structure Basics

Entry ID entry_id8g23
Deposition date deposition_date2023-02-03
Structure title titleStructure of Ternary Complex of cGAS with dsDNA and Bound pppIpA
Keywords keywordsTransferase-DNA complex, cGAS, intermediate, IMMUNE SYSTEM, IMMUNE SYSTEM-DNA complex; IMMUNE SYSTEM/DNA
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier30.40
Radius of gyration Rg (electron density) rg_electron30.01
Forward intensity I(0) i0215569000.00
Molecular weight molecular_weight104500.0 kDa
Excluded volume excluded_volume125420 ų
Envelope volume envelope_volume163810 ų
Hydration-shell volume shell_volume44363 ų
Envelope diameter envelope_diameter95.7
Shell Rg shell_rg38.36
Envelope Rg envelope_rg29.72
Shape Rg shape_rg30.02
Total Rg total_rg30.65
Total atoms total_atoms7253
Residues n_residues761
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 dmax94.3
Rg (real space) rg_real30.23
Rg uncertainty (real space) rg_real_error0.45
I(0) (real space) i0_real2.1560e+08
I(0) uncertainty (real space) i0_real_error2.7220e+06
Rg (reciprocal space) rg_reciprocal30.31
I(0) (reciprocal space) i0_reciprocal215600000.0000
Solution quality estimate total_estimate0.8991
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary38.1
Skewness Skewness skewness0.177
Kurtosis Kurtosis kurtosis-0.432
Angular range angular_range— – 0.2600 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha22620000.0000
Real-space data points n_real_points53
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.914; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.985; Smooth: 0.956

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (7)

8. Citations (1)

9. Files and Curves (10)