Crystallographic structure of the CobB protein (rainbow colored, N-terminus = blue, C-terminus = red) complexed with a portion of histone H4 (magenta) where the sidechain of acylated lysine-16 is displayed as stick diagram.
^PDB: 1S5P; Zhao K, Chai X, Marmorstein R (March 2004). "Structure and substrate binding properties of cobB, a Sir2 homolog protein deacetylase from Escherichia coli". J. Mol. Biol. 337 (3): 731–41. doi:10.1016/j.jmb.2004.01.060. PMID15019790.
^Starai VJ, Celic I, Cole RN, Boeke JD, Escalante-Semerena JC (December 2002). "Sir2-dependent activation of acetyl-CoA synthetase by deacetylation of active lysine". Science. 298 (5602): 2390–2. doi:10.1126/science.1077650. PMID12493915.