Oligosaccharide mapping of proteoglycan-bound and xyloside-initiated dermatan sulfate from fibroblasts
Author
Summary, in English
The copolymeric structure of dermatan sulfate chains synthesized by skin fibroblasts has been examined. Chains initiated onto exogeneous p-nitrophenyl-beta-D-xylopyranoside or attached to protein in a large proteoglycan, PG-L, and two small proteoglycans, PG-S1 and PG-S2, have been compared by using high resolution electrophoresis and gel chromatography of oligosaccharides generated by specific enzymatic or chemical degradations. The results confirm that chains attached to PG-L are glucuronate-rich, whereas novel findings indicate that chains attached to either of the two PG-S variants yield closely similar oligosaccharide maps, have approximately equal glucuronate and iduronate content and contain over 90% 4-sulfated disaccharide repeating units. Dermatan sulfate chains built onto xyloside at concentrations of 50 microM and below have a copolymeric structure similar to that of chains from the two PG-S variants. These findings indicate that the polymer-modifying machinery can generate chains with extended iduronate-containing repeats also when the xylose primer is not linked to core protein.
Department/s
- Glycobiology
- Dermatology and Venereology (Lund)
- Matrix Biology
Publishing year
1991
Language
English
Pages
108-115
Publication/Series
Glycoconjugate Journal
Volume
8
Issue
2
Document type
Journal article
Publisher
Springer
Topic
- Medicinal Chemistry
- Cell and Molecular Biology
- Dermatology and Venereal Diseases
Keywords
- oligosaccharide mapping
- xylosides
- dermatan sulfate
- Proteoglycans
Status
Published
Research group
- Glycobiology
- Matrix Biology
ISBN/ISSN/Other
- ISSN: 1573-4986