Ribosomes in the lutoïd fraction (=lysosomal compartment) from Hevea brasiliensis Künth. (Mull.-arg.) latex.

Lutoïd ribosomes represent 11.9% of the total ribosomal content of latex from Hevea brasilensis. Their two high-molecular-weight RNA components are identified. When undegraded, their molecular weights are calculated to be 1.3×10(6) and 0.7×10(6). Their nucleotide base composition is determined. The occurrence of lutoïd membrane-bound ribosomes and the lability of the 1.3×10(6)RNA component are discussed in relation to the biological role of lutoïds, more generally of a lysosomal compartment in the cellular function.