ON THE SITE OF SULFATION IN THE CHONDROCYTE
- PMID: 14189910
- PMCID: PMC2106381
- DOI: 10.1083/jcb.21.3.353
ON THE SITE OF SULFATION IN THE CHONDROCYTE
Abstract
As observed autoradiographically in the cartilage of embryonic rats, radiosulfate is bound and concentrated only in vesicles of the juxtanuclear Golgi apparatus of secreting chondrocytes within 3 minutes of its presentation. From this area, vacuoles migrate peripherally and lodge in the subcortex; their sulfated contents are thence discharged via stomata to the extracellular matrix. The label, apparently often associated with microvesicles at 10 and 20 minutes, is subsequently localized in the dense contents of the larger vacuoles. Bound radiosulfate is not detectable in other organelles. It is concluded that the vesicular component of the Golgi apparatus is the actual site of sulfation. Intracellular hyaluronidase-sensitive metachromatic granules are found chiefly at the cell periphery or mantle, rarely juxtanuclear in the main Golgi zone.
Similar articles
-
ON THE SITE OF SULFATION IN COLONIC GOBLET CELLS.J Cell Biol. 1964 Jun;21(3):339-51. doi: 10.1083/jcb.21.3.339. J Cell Biol. 1964. PMID: 14193835 Free PMC article.
-
Chondrogenesis, studied with the electron microscope.J Biophys Biochem Cytol. 1960 Dec;8(3):719-60. doi: 10.1083/jcb.8.3.719. J Biophys Biochem Cytol. 1960. PMID: 13706207 Free PMC article.
-
Sites of sulfatation in the chondrocytes of the articular cartilage of the rabbit. A study by quantitative radioautography of high resolution.Virchows Arch B Cell Pathol. 1977 Jan 20;23(1):53-64. doi: 10.1007/BF02889119. Virchows Arch B Cell Pathol. 1977. PMID: 402734
-
Traffic through the Golgi apparatus as studied by radioautography.J Electron Microsc Tech. 1991 Feb;17(2):132-49. doi: 10.1002/jemt.1060170203. J Electron Microsc Tech. 1991. PMID: 2013818 Review.
-
Effects of shear stress on articular chondrocyte metabolism.Biorheology. 2000;37(1-2):95-107. Biorheology. 2000. PMID: 10912182 Review.
Cited by
-
The biochemistry and function of mucosubstances.Histochem J. 1971 Jul;3(4):213-21. doi: 10.1007/BF01005220. Histochem J. 1971. PMID: 4108046 No abstract available.
-
Biosynthesis of proteoglycans in cartilage slices. Fractionation by gel chromatography and equilibrium density-gradient centrifugation.Biochem J. 1972 Feb;126(4):791-803. doi: 10.1042/bj1260791. Biochem J. 1972. PMID: 4262896 Free PMC article.
-
Sulfated compounds in the zymogen granules of the guinea pig pancreas.J Cell Biol. 1978 May;77(2):288-314. doi: 10.1083/jcb.77.2.288. J Cell Biol. 1978. PMID: 649653 Free PMC article.
-
Glycosyl transferases in chondroitin sulphate biosynthesis. Effect of acceptor structure on activity.Biochem J. 1985 Mar 15;226(3):705-14. doi: 10.1042/bj2260705. Biochem J. 1985. PMID: 3921015 Free PMC article.
-
Mucosubstances of rabbit granulocytes studied by means of electron-microscopic radioautography and X-ray microanalysis.Histochemistry. 1979 Jun 18;61(2):139-50. doi: 10.1007/BF00496526. Histochemistry. 1979. PMID: 457451
References
MeSH terms
Substances
LinkOut - more resources
Full Text Sources
Research Materials
Miscellaneous