Localization of glycosaminoglycan substitution sites on domain V of mouse perlecan.
Research output: Contribution to journal › Journal article › peer-review
Perlecan, the predominant basement membrane proteoglycan, has previously been shown to contain glycosaminoglycans attached at serine residues, numbers 65, 71, and 76, in domain I. However, the C-terminal domains IV and V of this molecule may also be substituted with glycosaminoglycan chains, but the exact substitution sites were not identified. The amino acid sequence of mouse perlecan reveals many ser-gly sequences in these domains that are possible sites for glycosaminoglycan substitution. We expressed recombinant domain IV and/or V of mouse perlecan in COS-7 cells and analyzed glycosaminoglycan substitution. Both heparan sulfate and chondroitin sulfate chains could be detected on recombinant domain V. One site, ser-gly-glu (serine residue 3593), toward the C-terminal region of domain V is a substitution site for heparan sulfate. When this sequence was absent, chondroitin/dermatan sulfate substitution was deleted, and the likely site for this galactosaminoglycan substitution was ser-gly-ala-gly (serine residue 3250) on domain V.
Original language | English |
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Journal | Biochemical and Biophysical Research Communications |
Volume | 265 |
Issue number | 3 |
Pages (from-to) | 680-90 |
Number of pages | 10 |
ISSN | 0006-291X |
DOIs | |
Publication status | Published - 1999 |
Bibliographical note
Keywords: Amino Acid Sequence; Animals; Base Sequence; Binding Sites; COS Cells; DNA Primers; Glycosaminoglycans; Glycosylation; Heparan Sulfate Proteoglycans; Heparitin Sulfate; Humans; Mice; Molecular Sequence Data; Protein Structure, Tertiary; Proteoglycans; Rats; Recombinant Proteins; Sequence Homology, Amino Acid; Transfection
ID: 5164269