The structure of AbyA1, a tetronic acid condensing enzyme from the Abyssomicin polyketide synthase.

3-oxoacyl-[acyl-carrier-protein] synthase III

in 12.5 % w/v PEG 1000, 12.5% w/v PEG 3350, 12.5% v/v MPD, 0.2M 1,6-hexanediol, 0.2 M 1-butanol, 0.2 M (RS)-1,2-propanediol, 0.2 M 2-propanol, 0.2 M 1,4-butanediol, 0.2 M 1,3-propanediol, 0.1 M MOPS/HEPES-Na

HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS

Tetronate, Polyketide, Natural Product, Condensation, transferase