Reference: Carmen AA, et al. (1996) HDA1 and HDA3 are components of a yeast histone deacetylase (HDA) complex. J Biol Chem 271(26):15837-44

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Abstract


Histone acetylation is maintained through the action of histone acetyltransferases and deacetylases and has been correlated with increased gene activity. To investigate the functional role of these enzymes in the regulation of transcription, we have purified from Saccharomyces cerevisiae two histone deacetylase activities, HDA and HDB, with molecular masses of approximately 350 and 600 kDa, respectively. In vitro, the HDA activity deacetylates all four core histones, has a preference for histone H3, and is strongly inhibited by trichostatin A (a specific inhibitor of histone deacetylases). HDB is considerably less sensitive to trichostatin A. We report the extensive purification of the HDA activity and the identification of peptides (p75, p73, p72, and p71) whose presence correlates with deacetylase activity on native polyacrylamide gels. An antibody to p75 immunoprecipitates peptides with molecular masses similar to those in the 350-kDa complex. Additionally, antibodies to p75 and p71 specifically precipitate histone deacetylase activity and co-immunoprecipitate each other. Gene disruptions of p75 (HDA1) or p71 (HDA3) cause the loss of the 350-kDa (but not the 600-kDa) activity from our chromatography profiles. These data argue strongly that HDA1 and HDA3 are subunits of the HDA complex, which is structurally distinct from the second, HDB complex.

Reference Type
Journal Article | Research Support, U.S. Gov't, P.H.S.
Authors
Carmen AA, Rundlett SE, Grunstein M
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