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Glycosylation of Bi...
Glycosylation of Bile-Salt-Stimulated Lipase from Human Milk : Comparison of Native and Recombinant Forms
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- Landberg, Eva (author)
- Linköpings universitet,Klinisk kemi,Hälsouniversitetet
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- Påhlsson, Peter (author)
- Linköpings universitet,Klinisk kemi,Hälsouniversitetet
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- Krotkiewski, Hubert (author)
- Institute of Immunology & Experimental Therapy, Polish Academy of Sciences, Wroclaw, Poland
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- Strömqvist, Mats (author)
- Astra Hässle, Preclinical Research and Development, Umeå, Sweden
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- Hansson, Lennart (author)
- Astra Hässle, Preclinical Research and Development, Umeå, Sweden
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- Lundblad, Arne (author)
- Linköpings universitet,Klinisk kemi,Hälsouniversitetet
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(creator_code:org_t)
- Elsevier BV, 1997
- 1997
- English.
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In: Archives of Biochemistry and Biophysics. - : Elsevier BV. - 0003-9861 .- 1096-0384. ; 344:1, s. 94-102
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Bile-salt-stimulated lipase (BSSL) is an enzyme present in human milk. BSSL is important for fat digestion in infants. It contains one site for N-glycosylation and a serine/threonine-rich domain which is highly O-glycosylated. Both N- and O-linked sugar chains were studied on native BSSL from three donors and compared to the glycosylation of recombinant BSSL produced in Chinese hamster ovary or mouse fibroblast (C-127) cell lines. The carbohydrate composition of oligosaccharides was mapped using sugar and methylation analyses, enzyme-linked immunosorbant assay, and different separation techniques. Native BSSL was found to be highly glycosylated (19–26%). It contained a high amount of fucosylated oligosaccharides and expressed both Lewis a and Lewis b blood group antigens. None of the recombinant BSSL forms contained fucose. N-linked structures on native BSSL were identified as mainly mono- and disialylated biantennary complex type structures with or without fucose substitution. High-pH anion-exchange chromatography analysis indicated that the recombinant forms of BSSL contained similar types ofN-glycan structures differing mainly in their content of sialic acid and by the absence of fucose residues. Native BSSL contained predominantly large O-linked oligosaccharides. This was in contrast to the recombinant forms of BSSL which contained mainly short typeO-glycans with a high content of sialic acid. Interestingly, the estimated number of O-glycans attached to native BSSL was lower than that for the recombinant forms.
Keyword
- bile-salt-stimulated lipase
- glycosylation
- high-pH anion-exchange chromatography
- human milk
- recombinant proteins
- MEDICINE
- MEDICIN
Publication and Content Type
- ref (subject category)
- art (subject category)
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