Ca2+- and calmodulin-dependent protein phosphorylation in rat lacrimal gland.
Ca2+, in homogenized lacrimal glands, enhanced phosphorylation of several peptides. Phosphorylation of two of these peptides was further stimulated by addition of the Ca2+-binding protein calmodulin and decreased by trifluoperazine, an inhibitor of Ca2+--calmodulin-dependent activity. Thus, Ca2+--calmodulin-dependent protein kinases and their substrates are present in lacrimal gland and could have an important role in lacrimal-gland function.
15 references, click to expand
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