nucleoprotein

nu·cleo·pro·tein

noun
\ˌn(y)ü-klē-ō-ˈprō-ˌtēn, -ˈprōt-ē-ən\

Definition of NUCLEOPROTEIN

: a compound that consists of a protein (as a histone) conjugated with a nucleic acid (as a DNA) and that is the principal constituent of the hereditary material in chromosomes