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250 aa. 150 aa. Primordial amino acid kinase. Primordial amino acid N-acetyltransferase. functional association. Ancestral carbamate kinase fold (CK). Ancestral N-acetyltransferase fold (NAT). fusion. fusion. CK. CK. NAT. NAT. lyase fold. NAT. EC 2.7.2.8. EC 2.3.1.1.
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250 aa 150 aa Primordial amino acid kinase Primordial amino acid N-acetyltransferase functional association Ancestral carbamate kinase fold (CK) Ancestral N-acetyltransferase fold (NAT) fusion fusion CK CK NAT NAT lyase fold NAT EC 2.7.2.8 EC 2.3.1.1 EC 2.3.1.1 EC 4.3.2.1 EC 2.3.1.1 N-acetylglutamate kinase NAGK two-domainmonofunctional NAGS monodomain monofunctional NAGS two-domain bifunctional ArgH(A) [E. coli ArgB] [E. coli ArgA] [M. tuberculosis ArgA] [Moritella]