Reports

Rhodopsin kinase activity in the mammalian pineal gland and other tissues

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Science  12 Oct 1984:
Vol. 226, Issue 4671, pp. 182-184
DOI: 10.1126/science.6091271

Abstract

Rhodopsin kinase, an enzyme involved in photochemical transduction in the retina, has been found in the mammalian pineal gland in amounts equal to those in the retina; other tissues had 7 percent of this amount, or less. This finding suggests that, in mammals, rhodopsin kinase functions in the pineal gland and other tissues to phosphorylate rhodopsin-like integral membrane receptors and is thereby involved in signal transduction.