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In enzymology, a peptide alpha-N-acetyltransferase (EC 2.3.1.88) is an enzyme that catalyzes the chemical reaction
- acetyl-CoA + peptide Nalpha-acetylpeptide + CoA
| peptide alpha-N-acetyltransferase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC no. | 2.3.1.88 | ||||||||
| CAS no. | 83452-29-3 | ||||||||
| Databases | |||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||||
| Gene Ontology | AmiGO / QuickGO | ||||||||
| |||||||||
Thus, the two substrates of this enzyme are acetyl-CoA and peptide, whereas its two products are Nalpha-acetylpeptide and CoA.
This enzyme belongs to the family of transferases, specifically those acyltransferases transferring groups other than aminoacyl groups. The systematic name of this enzyme class is acetyl-CoA:peptide Nalpha-acetyltransferase. Other names in common use include beta-endorphin acetyltransferase, peptide acetyltransferase, protein N-terminal acetyltransferase, NAT, Nalpha-acetyltransferase, amino-terminal amino acid-acetylating enzyme, and acetyl-CoA:peptide alpha-N-acetyltransferase.
As of late 2007, two structures have been solved for this class of enzymes, with PDB accession codes 2OB0 and 2PSW.
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