Evidence against an effect of plant hormones on thermal denaturation of pea nucleoprotein.

Pea (Pisum sativum L.) nucleohistone and chromatin which had been treated both in vivo and in vitro with indoleacetic acid and gibberellic acid were thermally denatured in low and high ionic strength media. Contrary to previous reports, the hormones had no effect on thermal denaturation profiles.

A modified procedure for fractionating histones.

A method is described, which is capable of fractionating histones obtained from any animal source into five major groups. Although the method is based on procedures initially developed by E. W.