[Poly A-protein complexes in polyribosomes of sprouting wheat embryos]

A purified polyribosome preparation has been isolated from sprouting wheat embryos. After treatment of the polyribosomes with pancreatic RNase the poly-A-sequences are found in the fractions sedimenting in the region of 8--14 S. The ability of 8--14 S poly-A-containing complexes to bind to the membrane filters at high ionic strength and their sensitivity to pronase indicate that in sprouting wheat embryo polyribosomes the poly-A-sequences occur as poly-A-protein complexes.