Structure and biological activity of basement membrane proteins.
Collagen type IV, laminin, heparan sulfate proteoglycans, nidogen (entactin) and BM-40 (osteonectin, SPARC) represent major structural proteins of basement membranes. They are well-characterized in their domain structures, amino acid sequences and potentials for molecular interactions. Such interactions include self-assembly processes and heterotypic binding between individual constituents, as well as binding of calcium (laminin, BM-40) and are likely to be used for basement membrane assembly. Laminin, collagen IV and nidogen also possess several cell-binding sites which interact with distinct cellular receptors. Some evidence exists that those interactions are involved in the control of cell behaviour. These observations have provided a more defined understanding of basement membrane function and the definition of new research goals in the future.
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Max-Planck-Institut für Biochemie, Martinsried.
D000818:Animals; D001485:Basement Membrane / Q000032:analysis*; D006801:Humans; D008565:Membrane Proteins / Q000032:analysis*; D013329:Structure-Activity Relationship
D008565:Membrane Proteins