title: Ribonuclease activities in developing experimental granulation tissue with reference to polysomes.
abstract: The Mg2+-precipitable polysomes in experimental granulation tissue increase up to three weeks and decrease slowly thereafter. Polysomes from young granulation tissue are, on a weight basis, more active in cell-free protein synthesis than polysomes from old granulation tissue. RNase activity is highest in polysomes from 1-week tissue. The polysomes contain both acid and alkaline RNase, but the alkaline RNase is the latent form, manifested by the addition of p-chloromercuribenzoate (pCMB). The high RNase activity of granulation tissue renders the analysis of polysomal patterns and functions of the polysomes difficult. In the post-polysomal supernatant of granulation tissue the RNase activity is highest in 2-4 week old tissue; it is maximal at pH 7-8 and only slightly influenced by pCMB.
mesh_terms: D000818:Animals; D005260:Female; D006097:Granulation Tissue / Q000166:cytology / Q000201:enzymology* / Q000378:metabolism; D008099:Liver / Q000166:cytology / Q000378:metabolism; D011132:Polyribosomes / Q000201:enzymology*; D014176:Protein Biosynthesis; D051381:Rats; D012260:Ribonucleases / Q000037:antagonists & inhibitors / Q000378:metabolism*
chemical_list: D012260:Ribonucleases