Correlation between phosphorylated H1 histone and condensed chromatin in Planococcus citri

Abstract

Histones of the mealybug Planococcus citri were isolated and characterized. Although no major differences were obsd. between the core histones of male and female insects, the pattern of H1 histones was significantly different between the sexes. A specific hyperphosphorylated H1 was found only in male mealybugs, where the paternal chromosomes are condensed and transcriptionally inactive