atg

ATG is an acronym that can refer to several distinct concepts across different fields. The two most widely recognized uses are in medicine, where ATG denotes anti-thymocyte globulin, and in molecular biology, where ATG is the DNA triplet that encodes the amino acid methionine and often serves as the translation start codon. Additional uses occur in technology and business contexts.

Anti-thymocyte globulin (ATG) is a preparation of polyclonal antibodies derived from immunized animals, used to suppress T-cell–mediated immune responses. It is employed as induction therapy to prevent organ transplant rejection and, in some hematologic diseases, to treat immune-mediated conditions. Administration requires medical supervision because of risks such as infection, infusion reactions, and cytopenias.

In molecular biology, the DNA sequence ATG encodes the amino acid methionine and commonly marks the start of translation. In RNA, the corresponding codon is AUG. As a start codon, ATG is integral to initiating protein synthesis in many organisms, though some genes may use alternative start signals.

Beyond these domains, ATG appears in various organization names, products, or group titles, and its meaning is highly context dependent. When encountering ATG, the surrounding text usually clarifies whether it refers to medicine, genetics, or another domain.