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Carboxy-terminal domain of Formyltransferase and similar domains This family represents the C-terminal domain of formyltransferase and similar proteins. This domain is found in a variety of enzymes with formyl transferase and alkyladenine DNA glycosylase activities. The proteins with formyltransferase function include methionyl-tRNA formyltransferase, ArnA, 10-formyltetrahydrofolate dehydrogenase and HypX proteins. Although most proteins with formyl transferase activity contain this C-terminal domain, prokaryotic glycinamide ribonucleotide transformylase (GART), a single domain protein, only contains the core catalytic domain. Thus, the C-terminal domain is not required for formyl transferase catalytic activity and may be involved in substrate binding. Some members of this family have shown nucleic acid binding capacity. The C-terminal domain of methionyl-tRNA formyltransferase is involved in tRNA binding. Alkyladenine DNA glycosylase is a distant member of this family with very low sequence similarity to other members. It catalyzes the first step in base excision repair (BER) by cleaving damaged DNA bases within double-stranded DNA to produce an abasic site and shows ability to bind to DNA.
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