PMID: 8944771Nov 1, 1996Paper

Expression and characterization of human perlecan domains I and II synthesized by baculovirus-infected insect cells

European Journal of Biochemistry
A J GroffenL P van den Heuvel

Abstract

We present the in vitro expression and purification of N-terminal fragments of human perlecan in insect cells. Three tailored fragments of human perlecan cDNA were introduced into the polyhedrin locus of baculovirus expression vectors (BEVs) encoding amino acids 1-196 (domain I), 1-404 (domain I + IIa) and 1-506 (domain I + IIab). The integrity of the BEVs was checked by DNA sequencing, polymerase chain reaction, restriction enzyme analysis and Southern blotting. Northern hybridization and metabolic labeling with [35S]methionine showed that expression of the perlecan-(1-404)- and the -(1-506)- peptide was successful, but in the case of the perlecan-(1-196)-peptide no recombinant protein was produced. Immunoblotting showed that both the (1-404)-peptide and (1-506)-peptide are recognized by 95J10, a monoclonal antibody that was previously raised against perlecan-(24-404)-peptide expressed in Escherichia coli. Gel permeation and anion-exchange chromatography were applied to purify the recombinant proteins. Glycosaminoglycans were demonstrated to be present. Deglycosylation with chondroitinase ABC showed that the perlecan-(1-404)-peptide was glycosylated with chondroitin sulfate residues. Consistent with these results, glycosaminog...Continue Reading

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May 16, 2002·Neurobiology of Aging·Jack van HorssenMarcel M Verbeek
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