Lexic.us

Definition of Rhodopsin

1. Noun. A red photopigment in the retinal rods of vertebrates; dissociates into retinene by light.

Definition of Rhodopsin

1. n. The visual purple. See under Visual.

Definition of Rhodopsin

1. Noun. (biochemistry) A light-sensitive pigment in the rod cells of the retina; it consists of an opsin protein bound to the carotenoid retinal ¹

¹ Source: wiktionary.com

Definition of Rhodopsin

1. [n -S]

Medical Definition of Rhodopsin

1. Light sensitive pigment formed from retinal linked through a Schiff's base to opsin: rhodopsin is an integral membrane protein found in the discs of retinal rods and cones, comprising some 40% of the membrane. Vertebrate opsins are proteins of 38 kD. See: bacteriorhodopsin. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)

Lexicographical Neighbors of Rhodopsin

Literary usage of Rhodopsin

Below you will find example usage of this term as found in modern and/or classical literature:

1. A Text-book of Physiological Chemistry: For Students of Medicine and Physicians by Charles Edmund Simon (1904)
"rhodopsin.—Of the significance of this pigment nothing is known. It occurs in the outer portion of ... Of the chemical nature of rhodopsin nothing is known. ..."

2. Radiant Energy and the Ophthalmic Lens by Frederick Booth (1921)
"Visual Purple rhodopsin.—The visual purple is a red pigment which is rapidly bleached by light. It is found only in the external segments of the rods. ..."

3. The Journal of Anatomy and Physiology by Anatomical Society of Great Britain and Ireland (1905)
"In concluding this part of the paper it is interesting to note that the rhodopsin-producing function of the rods, which is so characteristic a feature of ..."

4. Essentials of Physiology by Francis Arthur Bainbridge, James Acworth Menzies (1916)
"rhodopsin can be dissolved out of the retina by a solution of bile salts, ... The effect of light in bleaching rhodopsin is in proportion to its intensity, ..."

5. Medical Record by George Frederick Shrady, Thomas Lathrop Stedman, Joseph Meredith Toner Collection (Library of Congress) (1898)
"While there are no rods in the region of the fovea, it does not follow that there is no rhodopsin. The physiological function of the hexagonal epithelial ..."

6. Handbook of Severe Disability: A Text for Rehabilitation Counselors, Other edited by Walter C. Stolov, Michael R. Clowers (2000)
"3-33), make up the light-sensitive character of the retina Rods contain rhodopsin, a protein made up in part of a derivative of vitamin A It is highly light ..."

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