Structural Motifs of the Extracellular Matrix Proteins Laminin and Tenascin
Laminin and tenascin are two major extracellular matrix glycoproteins. They both consist of large disulphide-linked subunits composed of multiple structural and functional domains which are reflected in a distinct pattern of sequence motifs. These molecules belong to different protein families for which more and more members are being discovered. Members of these families have been discovered down to the level of Anthomedusae laminin (cf. Beck et al., 1990) and leech tenascin (Masuda-Nakagawa et al., 1989). The molecular structure not only varies considerably between species but for laminin also differences depending on the state of development and tissue origin have been elucidated. Varying numbers of tenascin isoforms generated by alternative splicing are found during development and in different tissues.
KeywordsGlycine Cysteine Heparin Proline Oligomer
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