Iron-binding protein that performs methylcarbamoylation of adenine using acetyl CoA (PubMed:32369169). This chemical modificaltion makes the viral DNA resistant to a variety of host type I and type II restriction enzymes by modifying approximately 15% of DNA adenine residues (PubMed:32369169). The modification called momylation changes adenine for N6-methylcarbamoyl adenine and occurs just before packaging (PubMed:1258376, PubMed:32369169). Target sequences are 5'-(C or G)-A-(Cor G)-N-(C or T)-3' (PubMed:1258376). Also usually modifies adenine residues in the host cellular DNA (PubMed:1258376). a 2'-deoxyadenosine in DNA + acetyl-CoA + AH2 + NH4(+) + O2 = A + a N(6)-methylcarbamoyl-2'-deoxyadenosine in DNA + CoA + H(+) + 2 H2O Mn(2+), Zn(2+), Mg(2+), Ca(2+), Co(2+) and Cu(2+) showed undetectable interaction. Expressed in the late phase of the viral replicative cycle. Mom gene must be expressed very efficiently only at a very late stage in the lytic cycle because its expression is lethal to the host cell. Expression of Mom requires the viral late transcription activator C and the host deoxyadenosine methylase Dam. Dam methylates three viral sites upstream of the mom promoter to prevent binding of the host translational repressor OxyR. If the viral sites are not fully methylated, the host translational repressor OxyR prevents RNAP recruitment by the transactivator C. Host Fis protein might also act as a negative regulator of mom gene expression. Mom expression is further controlled on the translation level by the viral translational activator Com. Belongs to the mulikevirus mom protein family.