Title : Specific interaction of the cyclophilin-cyclosporin complex with the B subunit of calcineurin.

Pub. Date : 1993 Jul 5

PMID : 7686148






6 Functional Relationships(s)
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Compound Name
Protein Name
Organism
1 Calcineurin (CaN), a Ca2+/calmodulin-dependent serine/threonine phosphatase, has been shown to be inhibited by the complex of the immunosuppressant cyclosporin A (CsA) and its receptor, cyclophilin (CyP), but not by either alone. Cyclosporine peptidylprolyl isomerase G Homo sapiens
2 Calcineurin (CaN), a Ca2+/calmodulin-dependent serine/threonine phosphatase, has been shown to be inhibited by the complex of the immunosuppressant cyclosporin A (CsA) and its receptor, cyclophilin (CyP), but not by either alone. Cyclosporine peptidylprolyl isomerase G Homo sapiens
3 In the presence of cyclosporin, 125I-CyP, shown to bind to CsA, is extensively cross-linked to the B subunit of CaN but not the catalytic A subunit. Cyclosporine peptidylprolyl isomerase G Homo sapiens
4 In the presence of cyclosporin, 125I-CyP, shown to bind to CsA, is extensively cross-linked to the B subunit of CaN but not the catalytic A subunit. Cyclosporine peptidylprolyl isomerase G Homo sapiens
5 However, the A subunit is required for binding of the CyP.CsA complex, since cross-linking to recombinant B subunit alone does not occur. Cyclosporine peptidylprolyl isomerase G Homo sapiens
6 CyP.CsA cross-linking to CaN is Ca2+/calmodulin-dependent with intact CaN, but Ca2+/calmodulin-independent after digestion to remove the calmodulin binding and autoinhibitory domain. Cyclosporine peptidylprolyl isomerase G Homo sapiens