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EC 2.3.1.286 Details
EC number
2.3.1.286
Accepted name
protein acetyllysine N-acetyltransferase
Reaction
[protein]-N6-acetyl-L-lysine + NAD+ + H2O = [protein]-L-lysine + 2′′-O-acetyl-ADP-D-ribose + nicotinamide (overall reaction);;(1a) [protein]-N6-acetyl-L-lysine + NAD+ = [protein]-N6-[1,1-(5-adenosylyl-α-D-ribose-1,2-di-O-yl)ethyl]-L-lysine + nicotinamide;;(1b) [protein]-N6-[1,1-(5-adenosylyl-α-D-ribose-1,2-di-O-yl)ethyl]-L-lysine + H2O = [protein]-L-lysine + 2′′-O-acetyl-ADP-D-ribose
Other name(s)
Sir2, protein lysine deacetylase, NAD+-dependent protein deacetylase
Systematic name
[protein]-N6-acetyl-L-lysine:NAD+ N-acetyltransferase (NAD+-hydrolysing; 2′′-O-acetyl-ADP-D-ribose-forming)
Comment
The enzyme, found in all domains of life, is involved in gene regulation by deacetylating proteins. Some of the 2′′-O-acetyl-ADP-D-ribose converts non-enzymically to 3′′-O-acetyl-ADP-D-ribose.
History
created 2019
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