Major alcohol O-acetyltransferase that uses acetyl-CoA to synthesize acetate esters from various alcohols, producing ethyl acetate, isoamyl acetate, isobutyl acetate, butyl acetate, hexyl acetate, heptyl acetate and octyl acetate (PubMed:7764365, PubMed:9758847, PubMed:10653746, PubMed:12937998, PubMed:16845703, PubMed:18597084, PubMed:17891501, PubMed:25306884, PubMed:28160314). The alcohol acyltransferase activity is promiscuous with regard to alcohol but relatively specific for acetyl-CoA since ATF1 does not use any other acyl-CoAs (C3, C4, C5, C6, C8, C10, C12) (PubMed:28160314). Acts also as an efficient thioesterase in vitro with specificity towards medium-chain-length acyl-CoAs (PubMed:28160314). In natural environments, the production of aromatic volatile metabolites promotes dispersal through insect vectors (PubMed:25310977). acetyl-CoA + an aliphatic alcohol = an acetyl ester + CoA a fatty acyl-CoA + H2O = a fatty acid + CoA + H(+) 3-methylbutanol + acetyl-CoA = 3-methylbutyl acetate + CoA Found to be inhibited by cadmium, copper, zinc and mercurium divalent cations and sulfhydryl reagents (PubMed:7764365). Inhibited by the addition of unsaturated fatty acids to the culture (PubMed:7764365). Optimum pH is 8. Optimum temperature is 25 degrees Celsius. Traffics to lipid droplets during the stationary phase (PubMed:25093817). Expression is repressed both by aeration and by unsaturated fatty acids (PubMed:9055409, PubMed:9675816). Also repressed by heat and ethanol stress (PubMed:14654433). Rapid induction by glucose depends on the cAMP/PKA signaling pathway (PubMed:14654433). Long-term expression requires both carbon and nitrogen sources (PubMed:14654433). The activation of transcription is dependent on RAP1, and the ROX1-TUP1p-SSN6 hypoxic repressor complex is responsible for repression by oxygen (PubMed:10487921). The putative ROX1-binding sequence in the ATF1 promoter is 5'-CCTATTGTTTT-3' and the RAP1-binding sequence is 5'-AACCCAACAAA-3' (PubMed:10487921). Segments of the N- and C-terminal domains (residues 24-41 and 508-525, respectively) are predicted to be amphipathic helices and are essential for endoplasmic reticulum and lipid dropplet association (PubMed:25093817). Reduces levels of isoamyl acetate production during fermentation to about 16% of those produced by the wild-type strain and causes a 40% reduction of ethyl acetate formation (PubMed:12957907). Understanding the biochemistry of the volatile esters is of considerable importance in industrial agriculture, winemaking and brewing. ATF1 could profoundly affect the flavor profiles of wines and distillates deficient in aroma, thereby paving the way for the production of products maintaining a fruitier character for longer periods after bottling (PubMed:10653746, PubMed:16845703, PubMed:18597084, PubMed:25306884, PubMed:28176138). The most important acetate esters from the perspective of fermented foods and beverages are probably ethyl acetate (fruity, solvent aroma), isobutyl acetate (sweet, fruit), isoamyl acetate (banana) and 2-phenylethyl acetate (rose). In addition, the enzymes responsible for ester synthesis are targets for the metabolic engineering of cellular factories intended to produce insect pheromones for use in pest control, but also for the production of fragrances, industrial solvents, fine chemicals, pharmaceuticals and renewable biofuels (PubMed:25281839, PubMed:24609358, PubMed:26205521, PubMed:26801935). Present with 1990 molecules/cell in log phase SD medium. Belongs to the ATF1 alcohol acetyltransferase family.