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CATH Superfamily 3.40.630.30

Gcn5-related N-acetyltransferase (GNAT)

The name of this superfamily has been modified since the most recent official CATH+ release (v4_2_0). At the point of the last release, this superfamily was: waiting to be named.

Functional Families

Overview of the Structural Clusters (SC) and Functional Families within this CATH Superfamily. Clusters with a representative structure are represented by a filled circle.
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FunFam 6679: Nat3p

There are 1 EC terms in this cluster

Please note: EC annotations are assigned to the full protein sequence rather than individual protein domains. Since a given protein can contain multiple domains, it is possible that some of the annotations below come from additional domains that occur in the same protein, but have been classified elsewhere in CATH.

Note: The search results have been sorted with the annotations that are found most frequently at the top of the list. The results can be filtered by typing text into the search box at the top of the table.

EC Term Annotations Evidence
N-terminal methionine N(alpha)-acetyltransferase NatB. [EC: 2.3.1.254]
(1) Acetyl-CoA + an N-terminal L-methionyl-L-asparaginyl-[protein] = an N-terminal N(alpha)-acetyl-L-methionyl-L-asparginyl-[protein] + CoA. (2) Acetyl-CoA + an N-terminal L-methionyl-L-glutaminyl-[protein] = an N-terminal N(alpha)-acetyl-L-methionyl-L-glutaminyl-[protein] + CoA. (3) Acetyl-CoA + an N-terminal L-methionyl-L-aspartyl-[protein] = an N-terminal N(alpha)-acetyl-L-methionyl-L-aspartyl-[protein] + CoA. (4) Acetyl-CoA + an N-terminal L-methionyl-L-glutamyl-[protein] = an N-terminal N(alpha)-acetyl-L-methionyl-L-glutamyl-[protein] + CoA.
  • N-terminal acetylases (NATs) catalyze 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 and makes the N-terminal residue larger and more hydrophobic, and may also play a role in membrane targeting and gene silencing.
  • The NatB complex is found in all eukaryotic organisms, and specifically targets N-terminal L-methionine residues attached to Asn, Asp, Gln, or Glu residues at the second position.
  • Formerly EC 2.3.1.88.
 7 A0A0L8VGB0 A6ZX09 B3LK92 C7GLJ1 C8ZJF3 N1NWI2 Q06504
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