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Titolo:
Vision in the ultraviolet
Autore:
Hunt, DM; Wilkie, SE; Bowmaker, JK; Poopalasundaram, S;
Indirizzi:
Univ Coll London, Inst Ophthalmol, London EC1V 9EL, England Univ Coll London London England EC1V 9EL almol, London EC1V 9EL, England
Titolo Testata:
CELLULAR AND MOLECULAR LIFE SCIENCES
fascicolo: 11, volume: 58, anno: 2001,
pagine: 1583 - 1598
SICI:
1420-682X(200110)58:11<1583:VITU>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
OLD-WORLD MONKEYS; CHAMELEON ANOLIS-CAROLINENSIS; PROTEIN-COUPLED RECEPTORS; SENSITIVE VISUAL PIGMENT; SCHIFF-BASE COUNTERION; COLOR-VISION; BOVINE RHODOPSIN; PHOTORECEPTOR CELL; MANTIS SHRIMP; OIL DROPLETS;
Keywords:
opsin; visual pigment; evolution; ultraviolet; spectral tuning; G-protein receptor;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
129
Recensione:
Indirizzi per estratti:
Indirizzo: Hunt, DM Univ Coll London, Inst Ophthalmol, Bath St, London EC1V 9EL, England Univ Coll London Bath St London England EC1V 9EL 1V 9EL, England
Citazione:
D.M. Hunt et al., "Vision in the ultraviolet", CELL MOL L, 58(11), 2001, pp. 1583-1598

Abstract

Sensitivity to ultraviolet light (UV) is achieved by photoreceptors in theeye that contain a class of visual pigments maximally sensitive to light at wavelengths < 400 nm. It is widespread in the animal kingdom where it is used for mate choice, communication and foraging for food. UV sensitivity is not, however, a constant feature of the visual system, and in many vertebrate species, the UV-sensitive (UVS) pigment is replaced by a violet-sensitive (VS) pigment with maximal sensitivity between 410 and 435 nm. The role of protonation of the Schiff base-chromophore linkage and the mechanism fortuning of pigments into the UV is discussed in detail. Amino acid sequenceanalysis of vertebrate VS UVS pigments indicates that the ancestral pigment was UVS, with loss of UV sensitivity occurring separately in mammals, amphibia and birds, and subsequently regained by a single amino acid substitution in certain bird species. In contrast, no loss of UV sensitivity has occurred in the UVS pigments of insects.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/09/20 alle ore 23:57:04