Results 191 to 200 of about 28,928 (224)
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Nature New Biology, 1971
RHODOPSIN, the visual pigment of vertebrate rods, has been shown to consist of a chromophore (11-cis retinal) bound to a protein (opsin)1–2. It has been proposed that the linkage is a Schiff base between phosphatidyl ethanolaniine (PE) and retinal and that when exposed to light, the retinal migrates from PE to the e-amino-group of a lysine residue in ...
R T, Hoffman, M O, Hall, R E, Anderson
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RHODOPSIN, the visual pigment of vertebrate rods, has been shown to consist of a chromophore (11-cis retinal) bound to a protein (opsin)1–2. It has been proposed that the linkage is a Schiff base between phosphatidyl ethanolaniine (PE) and retinal and that when exposed to light, the retinal migrates from PE to the e-amino-group of a lysine residue in ...
R T, Hoffman, M O, Hall, R E, Anderson
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Opsin for immunological studies
Current Eye Research, 1985Opsin for immunological studies can be prepared free from S-antigen by affinity chromatography on Con A-Sepharose. This preparation, however, contains 2-6% Con A originating from the affinity medium. Con A as impurity disturbs lymphocyte transformation tests carried out with opsin as test antigen. We describe a method for the removal of Con A by immuno-
R M, Broekhuyse, E D, Kuhlmann
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A radioimmunoassay specific for opsin
Biochimica et Biophysica Acta (BBA) - Protein Structure and Molecular Enzymology, 1983A radioimmunoassay is developed for bovine opsin using a rabbit antiserum against bovine rod outer segment membranes. The assay is specific for opsin. Rhodopsin, bacteriorhodopsin and hemoglobin do not show cross-reaction. It can be carried out rapidly, has a sensitivity of 0.01 pmol bovine opsin and gives accurate results, even in the presence of a ...
J J, Schalken +3 more
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Opsins and mammalian photoentrainment
Cell and Tissue Research, 2002Research over the past decade has provided overwhelming evidence that photoreception in the vertebrate eye is not confined to the rod and cone photoreceptors. It appears that photoreceptor cells within the inner retina provide irradiance information to a wide variety of different photosensory tasks including photoentrainment, pupillary constriction and
Bellingham, James, Foster, Russell G.
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Immunoreactivity of rhodopsin and opsin
Biochimica et Biophysica Acta (BBA) - General Subjects, 1984An examination by a radioimmunoassay of the relative affinity of opsin and rhodopsin for rabbit antibody raised against bovine rhodopsin revealed that opsin was the preferred antigen. About 10-fold greater amounts of rhodopsin than opsin were required to achieve 50% inhibition of binding of 125I-labeled ligand in the RIA.
J J, Plantner, E L, Kean
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2018
This case will examine the evolution of trichromatic vision in old world monkeys.
White, Peter +4 more
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This case will examine the evolution of trichromatic vision in old world monkeys.
White, Peter +4 more
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The primary structure of mantid opsin
Gene, 1994The sequence encoding opsin from the mantid Sphodromantis sp. has been determined by dideoxynucleotide sequencing of PCR products from a cDNA derived from eye cup tissue. The 376-amino-acid (aa) residues show approx. 56% identity and 85% similarity to known insect opsins (Drosophila melanogaster and Calliphora erythrocephala).
P, Towner, W, Gärtner
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Journal of Experimental Biology, 2004
James Bowmaker is fascinated by pineal glands. These photosensitive glands, which regulate circadian rhythms in response to light levels by releasing melatonin, are usually located on top of the brain just beneath the skull.
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James Bowmaker is fascinated by pineal glands. These photosensitive glands, which regulate circadian rhythms in response to light levels by releasing melatonin, are usually located on top of the brain just beneath the skull.
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Synthesis of rhodopsin and opsin in vitro
Biochemistry, 1975Isolated bovine retinas have been used to study the synthesis of rhodopsin and the renewal of photoreceptor rod outer segments. Both leucine and glucosamine served as radioactive tracers to follow rhodopsin synthesis. In both cases the rod outer segment preparations contained large amounts of labeled macromolecules chromatographically distinct from ...
P J, O'Brien, C G, Muellenberg
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The chromophore binding space of opsin
Nature, 1978THE rate of the reaction between opsin and 11-cis retinal, that gives the visual pigment rhodopsin, is measured in the presence and absence of structural analogues of 11-cis retinal, the polyene side chain of which is varied systematically. A decrease in regeneration rate can be interpreted as competition with 11-cis retinal for the binding site on the
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