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Title: Molecular size distribution of proteoglycan subunits and glycosaminoglycans synthesized by chondrocytes under conditions of reduced proteoglycan synthesis. Author: Handley CJ, Speight G, Robinson HC, Lowther DA. Journal: Biochim Biophys Acta; 1980 Aug 01; 631(1):124-9. PubMed ID: 7397241. Abstract: The rate of proteoglycan synthesis by chondrocytes in vitro was depressed by either omitting L-glutamine from the incubation medium or by addition of proteoglycan subunit to the medium. The molecular size distribution on Sepharose 2B of the proteoglycan subunits synthesized by the chondrocytes under these conditions of reduced proteoglycan synthesis was found to be the same as those synthesized by the control cells. Likewise, the molecular size distribution on Sepharose 6B CL of the glycosaminoglycan chains synthesized by the depressed cells was found to be similar to that observed in untreated chondrocytes. This work demonstrates that, under conditions of reduced proteoglycan synthesis, fewer proteoglycan subunits are synthesized by chondrocytes and that the molecular size distribution of these macromolecules is similar to those synthesized by untreated cells.[Abstract] [Full Text] [Related] [New Search]