Acetyl-coA synthetase isoform; along with Acs2p, acetyl-CoA synthetase isoform is the nuclear source of acetyl-coA for histone acetylation; expressed during growth on nonfermentable carbon sources and under aerobic conditions; metabolites mediate the formation of filament assemblies in meiotic cells, storing Acs1p in an inactive state and promoting efficient return to growth after starvation