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Information on EC 2.3.1.259 - N-terminal methionine Nalpha-acetyltransferase NatF

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IUBMB Comments
N-terminal-acetylases (NATs) catalyse the covalent attachment of an acetyl moiety from acetyl-CoA to the free alpha-amino group at the N-terminus of a protein. This irreversible modification neutralizes the positive charge at the N-terminus, makes the N-terminal residue larger and more hydrophobic, and prevents its removal by hydrolysis. NatF is found only in higher eukaryotes, and is absent from yeast. Unlike other Nat systems the enzyme is located in the Golgi apparatus. It faces the cytosolic side of intracellular membranes, and specifically acetylates transmembrane proteins whose N termini face the cytosol. NatF targets N-terminal L-methionine residues attached to Lys, Ser, Val, Leu, Gln, Ile, Tyr and Thr residues.
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The expected taxonomic range for this enzyme is: Homo sapiens
Reaction Schemes
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an N-terminal-L-methionyl-[transmembrane protein]
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an N-terminal-Nalpha-acetyl-L-methionyl-[transmembrane protein]
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Synonyms
Naa60, Naa60p, Nalpha-acetyltransferase 60, NatF, more
REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
acetyl-CoA + an N-terminal-L-methionyl-[transmembrane protein] = an N-terminal-Nalpha-acetyl-L-methionyl-[transmembrane protein] + CoA
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