N6AMT1 (N-6 Adenine-Specific DNA Methyltransferase 1) is a Protein Coding gene. 2 alternatively spliced human isoforms have been reported. This gene encodes an N(6)-adenine-specific DNA methyltransferase. It belongs to the eukaryotic/archaeal PrmC-related family. The encoded enzyme may be involved in the methylation of release factor I during translation termination. N6AMT1 has a significant role in determining susceptibility to arsenic toxicity and carcinogenicity because of its specific activity in methylating MMAIII to DMA and other unknown mechanisms. N6AMT1 methylates the toxic inorganic arsenic (iAs) metabolite, monomethylarsonous acid (MMA), to the less toxic dimethylarsinic acid (DMA). N6AMT1 polymorphisms were associated with arsenic methylation in Andean women, independent of AS3MT.