9mdc

Crystal Structure of human cyclic GMP-AMP synthase (cGAS) in complex with compound 36; (S)-(6,7-dichloro-1-methyl-1,3,4,5-tetrahydro-2H-pyrido[4,3-b]indol-2-yl)(5-(2-hydroxyethoxy)pyrimidin-2-yl)methanone

Method: X-RAY DIFFRACTION Dmax: 67.5 Å Quality: EXCELLENT

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

Cyclic GMP-AMP synthase

Homo sapiens

UniProt Q8N884

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 157–522 Not recorded ZN ZINC ION × 1 A1BJA [(1S)-6,7-dichloro-1-methyl-1,3,4,5-tetrahydro-2H-pyrido[4,3-b]indol-2-yl][5-(2-hydroxyethoxy)pyrimidin-2-yl]methanone × 1 ANP PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER × 1 MN MANGANESE (II) ION × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 8.5;289 K;(5mg/ml) HcGAS catalytic domain was mixed with 17/16 bp dsDNA in a molar ratio of 1:1.25 protein:DNA in a buffer containing 20 mM Tris pH 7.5, 150 mM NaCl, 10mM MnCl2, 1mM TCEP, 5mM AMPPNP and 1mM compound. Crystals were obtained with sitting drop vapor diffusion in drops mixed 1:1 with a reservoir of 0.1M Tris pH 8.0, 0.1 M Lithium Sulfate, 20% PEG 4000 and cGAS crystal seeds. Crystals were cryo-protected using reservoir solution supplemented with 25% ethylene glycol and flash-frozen in Liquid N2. Resolution 1.25 Å R-free 0.203

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.

106 other PDB entries and 132 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name CGAS_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–366; UniProt 157–522

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 9mdc

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id9mdc
Deposition date deposition_date2024-12-05
最后修订 last_revision2025-01-01
Structure title titleCrystal Structure of human cyclic GMP-AMP synthase (cGAS) in complex with compound 36; (S)-(6,7-dichloro-1-methyl-1,3,4,5-tetrahydro-2H-pyrido[4,3-b]indol-2-yl)(5-(2-hydroxyethoxy)pyrimidin-2-yl)methanone
Keywords keywordshuman cyclic GMP-AMP synthase AMP-PNP Compound 36, TRANSFERASE; TRANSFERASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier21.75
Radius of gyration Rg (electron density) rg_electron20.78
Forward intensity I(0) i057639200.00
Molecular weight molecular_weight39496.0 kDa
Excluded volume excluded_volume38136 ų
Envelope volume envelope_volume63445 ų
Hydration-shell volume shell_volume24786 ų
Envelope diameter envelope_diameter66.5
Shell Rg shell_rg27.94
Envelope Rg envelope_rg21.01
Shape Rg shape_rg20.74
Total Rg total_rg21.50
Total atoms total_atoms2992
Residues n_residues353
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 dmax67.5
Rg (real space) rg_real21.61
Rg uncertainty (real space) rg_real_error0.31
I(0) (real space) i0_real5.7640e+07
I(0) uncertainty (real space) i0_real_error7.5000e+05
Rg (reciprocal space) rg_reciprocal21.63
I(0) (reciprocal space) i0_reciprocal57640000.0000
Solution quality estimate total_estimate0.9044
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary26.2
Skewness Skewness skewness0.145
Kurtosis Kurtosis kurtosis-0.510
Angular range angular_range— – 0.3650 −1
Current regularization parameter α current_alpha0.0001
Highest regularization parameter α highest_alpha10220000.0000
Real-space data points n_real_points68
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.921; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.995; Smooth: 0.996

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (6)

8. Citations (1)

9. Files and Curves (10)