Fusion protein amino acids 2-236 (N-acetyltransferase domain) of human ATAT1 (also known as Alpha-tubulin N-acetyltransferase 1, Acetyltransferase mec-17 homolog, Alpha-TAT, Alpha-TAT1, TAT, MEC17, C6orf134 and Nbla00487, accession number Q5SQI0)Rat: 94% identity (222/235 amino acids identical)Mouse: 94% identity (221/235 amino acids identical)