ubiquitinated histones uh2a.1 , uh2a.z , and uh2b have been identified in the basic nuclear proteins of the slime mold physarum polycephalum by three methods : peptide mapping , cross-reaction with anti-ubiquitin antibody , and uh2a and uh2b isopeptidase cleavage .
C0019652
histones
C0028589
nuclear proteins