Light-sensitive proteins of corneal epithelium and lens

Cremer-Bartels, G.; Hollwich, F; Dieckhues, B

doi:10.1016/0014-4835(71)90177-1

Experimental Eye Research

1971

DOI: 10.1016/0014-4835(71)90177-1

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Light-sensitive proteins of corneal epithelium and lens

G. Cremer-Bartels¹,

F Hollwich²,

B Dieckhues³

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1980

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“…Hydroxyindole methyltransferase and melatonin have been found in the retina (14,15), and pteridine-like, light-sensitive pigments have been isolated from mammalian retina (16). Hydroxyindole methyltransferase activity of retina in vitro is affected by addition of a synthetic pteridine derivative, triamterene, which is used in humans as a diuretic (17,18).…”

mentioning

confidence: 99%

Pteridines as nonretinal regulators of light-dependent melatonin biosynthesis.

Cremer-Bartels¹,

Ebels²

1980

Proc. Natl. Acad. Sci. U.S.A.

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ABSTRACT6-Formylpterin was purified by paper chromatography, and bovine pineal hydroxyindole-O-methyltransferase (S-adenosyl-L-methionine:N-acetylserotonin 0-methyltransferase; EC 2.1.1.4) was purified by flat-bed gel electrofocusing. Fractions of the methyltransferase with isoelectric points at pH 5.0, 5.7, and 5.2 were tested in the presence of 6-formylpterin, and decreased activities were found. Because 6formylpterin is one of the photolytic products of folic acid and decreased serum folic acid has been reported in light-exposed men, we sugest that pteridines may be involved in nonretinal effects of light on pineal melatonin biosynthesis. It may be that this metabolic pathway is an evolutionary relic of primitive light responses of pigmentation mechanism.

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mentioning

confidence: 99%

Pteridines as nonretinal regulators of light-dependent melatonin biosynthesis.

Cremer-Bartels¹,

Ebels²

1980

Proc. Natl. Acad. Sci. U.S.A.

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Light-sensitive proteins of corneal epithelium and lens

Cited by 1 publication

References 0 publications

Pteridines as nonretinal regulators of light-dependent melatonin biosynthesis.

Pteridines as nonretinal regulators of light-dependent melatonin biosynthesis.

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