Production and Characterization of Functional Domains of Human Fibronectin Expressed in Escherichia coli
An efficient expression system was constructed in Escherichia coli that produced a 33-kDa fragment, C-274, of human fibronectin with a strong cell-adhesive activity. The entire sequence of the heparin-binding domain with 271 amino acids, H-271, was also expressed. Deletion analysis of the type III r...
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Published in | Journal of biochemistry (Tokyo) Vol. 110; no. 2; pp. 284 - 291 |
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Main Authors | , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Oxford
Oxford University Press
01.08.1991
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Subjects | |
Online Access | Get full text |
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Summary: | An efficient expression system was constructed in Escherichia coli that produced a 33-kDa fragment, C-274, of human fibronectin with a strong cell-adhesive activity. The entire sequence of the heparin-binding domain with 271 amino acids, H-271, was also expressed. Deletion analysis of the type III repeats showed that the heparin-binding site was at type III-13. The cell-adhesive activity of a fusion protein, CH-271, containing the cell- and the heparin-binding domains was twice that of C-274 when BHK but not B16-F10 melanoma cells were tested; H-271 alone was inactive. Recombinant proteins containing the CS1 sequence of the IIICS region were more active than C-274 and CH-271 with B16-F10. However, H-296, which contained both H-271 and CSl, was almost inactive with BHK. CH-296, which contained CSl at the C-terminus of CH-271, was more active with B16-F10 than H-296 and C-CSl, which was produced by the deletion of H-271 from CH-296. Thus, the cell-binding domain was active with both kinds of cells. The heparin-binding domain promoted the adhesion of both kinds of cells only when linked to the cell-binding domain or CS1. CS1 was specific for the adhesion of B16-F10 but was not essential. |
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Bibliography: | ark:/67375/HXZ-LGZ7WK1V-H istex:A8A299865184D9F69B643DF6E677CE5C2EB9732D ArticleID:110.2.284 ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 ObjectType-Article-1 ObjectType-Feature-2 |
ISSN: | 0021-924X 1756-2651 |
DOI: | 10.1093/oxfordjournals.jbchem.a123572 |