Nuclear protein in testis

We have reported previously [8] that in mouse testis non-histone proteins are labelled to a higher specific activity than histones following an i.p. injection of ribose and [ H]-adenine, and that the radioactivity is covalently bound to protein in the form of ADP-ribose. This was in contrast to the situation in liver where histones incorporated more radiolabel than non-histone proteins. We have recently extended these observations on ADP-ribosylation of nuclear proteins in testis [9] and we report... 

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