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Initiation of the d...
Initiation of the decorin glycosaminoglycan chain in the endoplasmic reticulum-Golgi intermediate compartment
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- Jönsson, Mats (författare)
- Lund University,Lunds universitet,Bröstcancer-genetik,Sektion I,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Breastcancer-genetics,Section I,Department of Clinical Sciences, Lund,Faculty of Medicine
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- Eklund, Erik (författare)
- Lund University,Lunds universitet,Matrixbiologi,Forskargrupper vid Lunds universitet,Matrix Biology,Lund University Research Groups
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- Fransson, Lars-Åke (författare)
- Lund University,Lunds universitet,Institutionen för experimentell medicinsk vetenskap,Medicinska fakulteten,Department of Experimental Medical Science,Faculty of Medicine
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- Oldberg, Åke (författare)
- Lund University,Lunds universitet,Åke Oldbergs forskargrupp,Forskargrupper vid Lunds universitet,Åke Oldberg´s group,Lund University Research Groups
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(creator_code:org_t)
- 2003
- 2003
- Engelska.
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Ingår i: Journal of Biological Chemistry. - 1083-351X. ; 278:24, s. 21415-21420
- Relaterad länk:
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http://dx.doi.org/10... (free)
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- We have transiently expressed decorin with a C- terminal KDEL endoplasmic reticulum retention signal peptide in COS- 7 cells to study initiation of galactosaminoglycan synthesis in the endoplasmic reticulum- Golgi intermediate compartment. All decorin- KDEL molecules were substituted with N- linked oligosaccharides sensitive to endoglycosidase H, indicating that the core protein was located proximal to the medial- Golgi. O-Linked glycosylation was only initiated in a minor fraction of the molecules. The O- linked saccharides were characterized by gel filtration after stepwise degradations using chondroitin ABC/ AC-I lyases, beta1 - 3- glycuronidase, beta-galactosidase, and alkaline phosphatase. The major O- linked saccharide was the linkage region pentasaccharide GalNAcbeta1-4GlcUAbeta1-3Galbeta1-3Galbeta1-4-Xyl- 2- phosphate, demonstrating initiation of chondroitin synthesis in the endoplasmic reticulum- Golgi intermediate compartment. In the presence of brefeldin A, partial elongation of a chondroitin chain took place, indicating retrieval of polymerases but not of sulfotransferases.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Cell- och molekylärbiologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Cell and Molecular Biology (hsv//eng)
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- art (ämneskategori)
- ref (ämneskategori)
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