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EC 2.3.1.255 Details
EC number
2.3.1.255
Accepted name
N-terminal amino-acid Nα-acetyltransferase NatA
Reaction
(1) acetyl-CoA + an N-terminal-glycyl-[protein] = an N-terminal-Nα-acetyl-glycyl-[protein] + CoA;;(2) acetyl-CoA + an N-terminal-L-alanyl-[protein] = an N-terminal-Nα-acetyl-L-alanyl-[protein] + CoA;;(3) acetyl-CoA + an N-terminal-L-seryl-[protein] = an N-terminal-Nα-acetyl-L-seryl-[protein] + CoA;;(4) acetyl-CoA + an N-terminal-L-valyl-[protein] = an N-terminal-Nα-acetyl-L-valyl-[protein] + CoA;;(5) acetyl-CoA + an N-terminal-L-cysteinyl-[protein] = an N-terminal-Nα-acetyl-L-cysteinyl-[protein] + CoA;;(6) acetyl-CoA + an N-terminal-L-threonyl-[protein] = an N-terminal-Nα-acetyl-L-threonyl-[protein] + CoA
Other name(s)
NAA10 (gene name), NAA15 (gene name), ARD1 (gene name)
Systematic name
acetyl-CoA:N-terminal-Gly/Ala/Ser/Val/Cys/Thr-[protein] Nα-acetyltransferase
Comment
N-terminal-acetylases (NATs) catalyse the covalent attachment of an acetyl moiety from acetyl-CoA to the free α-amino group at the N-terminus of a protein. This irreversible modification neutralizes the positive charge at the N-terminus and makes the N-terminal residue larger and more hydrophobic. The NatA complex is found in all eukaryotic organisms, and specifically targets N-terminal Ala, Gly, Cys, Ser, Thr, and Val residues, that became available after removal of the initiator methionine.
History
created 1989 as EC 2.3.1.88, part transferred 2016 to EC 2.3.1.255
EC Tree
2.3.1.55 created 1976, deleted 1999
2.3.1.120 created 1990, deleted 1992
2.3.1.124 created 1990, deleted 1992