Calmodulin binding to secretory granules isolated from bovine neurohypophyses
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Secretory granules, isolated from bovine neurohypophyses on isoosmolar Percoll‐sucrose‐EGTA gradients had a calmodulin content of 0.09 ± 0.01 μg/mg protein (SE, n = 6). The distribution of calmodulin on the gradient showed that it did not copurify with the granules. Specific binding sites for calmodulin with a high affinity (Kd = 2.43 ± 0.27 × 10‐9 M (SE, n = 5)) and a maximum binding capacity of 1.3 ± 0.4 pmol/mg protein (SE, n = 5) could be demonstrated when such secretory granules were incubated with 125I‐calmodulin.
Originalsprog | Engelsk |
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Tidsskrift | Acta Physiologica Scandinavica |
Vol/bind | 118 |
Udgave nummer | 4 |
Sider (fra-til) | 355-359 |
Antal sider | 5 |
ISSN | 0001-6772 |
DOI | |
Status | Udgivet - 1983 |
ID: 307740287