Involved in the protection against polyamine toxicity by regulating their concentration. Could also be involved in the negative control of sporulation as well as production of degradative enzymes such as alpha-amylase, levansucrase and alkaline phosphatase. Catalyzes the transfer of an acetyl group from acetyl coenzyme A (AcCoA) to an acceptor substrate and releases both CoA and the acetylated product. It possesses N1-acetyltransferase activity toward polyamine substrates including spermidine, spermine, aminopropylcadaverine, norspermidine, homospermidine, N(8)-acetylspermidine, diaminopropane and agmatine. acetyl-CoA + an alkane-alpha,omega-diamine = an N-acetylalkane-alpha,omega-diamine + CoA + H(+) kcat is 21.9 min(-1) for acetyltransferase activity with AcCoA as substrate (at pH 9 and 37 degrees Celsius). kcat is 19.1 min(-1) for acetyltransferase activity with spermine as substrate (at pH 9 and 37 degrees Celsius). kcat is 7.1 min(-1) for acetyltransferase activity with N(1)-acetylspermine as substrate (at pH 9 and 37 degrees Celsius). kcat is 6.1 min(-1) for acetyltransferase activity with aminopropylcadaverine as substrate (at pH 9 and 37 degrees Celsius). kcat is 5.2 min(-1) for acetyltransferase activity with spermidine as substrate (at pH 9 and 37 degrees Celsius). Monomer. Cells lacking this gene display release of repression of protease synthesis and sporulation in glucose-enriched medium. Belongs to the acetyltransferase family.