Crystal Structure of human cyclic GMP-AMP synthase in complex with 6-(4-chlorophenyl)-10,11-dimethoxy-7-methyl-2,4,6-triazatricyclo[7.3.1.05,13]trideca-1(12),2,4,7,9(13),10-hexaene

Crystal Structure of a human cyclic GMP-AMP synthase complex

cGAMP synthase,cGAS,h-cGAS,2'3'-cGAMP synthase,Mab-21 domain-containing protein 1

GASKLRAVLEKLKLSRDDISTAAGMVKGVVDHLLLRLKCDSAFRGVGLLNTGSYYEHVKISAPNEFDVMFKLEVPRIQLE
EYSNTRAYYFVKFKRNPKENPLSQFLEGEILSASKMLSKFRKIIKEEINDIKDTDVIMKRKRGGSPAVTLLISEKISVDI
TLALESKSSWPASTQEGLRIQNWLSAKVRKQLRLKPFYLVPKHAKEGNGFQEETWRLSFSHIEKEILNNHGKSKTCCENK
EEKCCRKDCLKLMKYLLEQLKERFKDKKHLDKFSSYHVKTAFFHVCTQNPQDSQWDRKDLGLCFDNCVTYFLQCLRTEKL
ENYFIPEFNLFSSNLIDKRSKEFLTKQIEYERNNEFPVFDEF

10-12 mg/mL protein in 25 mM Tris/HCl pH7.5, 500mM NaCl, 2mM TCEP, supplemented with 10x molar excess of ligand and, if needed, with 10 mM MgCl2 and 5mM ATP, then mixed 1:1 with reservoir of the Procomplex screen. Several conditions resulted in crystals

ligand well defined by electron density, but overall structure quality is low

IMMUNE RESPONSE, TRANSFERASE, NTASE, DNA SENSOR