Methods for identifying agents which alter histone protein...

Chemistry: molecular biology and microbiology – Measuring or testing process involving enzymes or... – Involving nucleic acid

Reexamination Certificate

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C435S004000, C435S005000, C435S007600, C435S015000

Reexamination Certificate

active

07452664

ABSTRACT:
Methods of identifying agents which alter the NAD-dependent acetylation status and mono-ADP-ribosylation of nuclear proteins are disclosed. The methods further include identifying agents which alter the life span or aging of a cell or an organism by determining the level of NAD-dependent acetylation and/or ADP ribosylation of a nuclear protein. The invention also relates to a mammalian Sir2 protein which acetylates or deacetylates nuclear proteins in a NAD-dependent manner and has mono-ADP-ribosyltransferase activity. Host cells producing the Sir2 protein and antibodies to the Sir2 protein are also provided.

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