COLOR VISION;
CONE PIGMENT;
PHOTORECEPTORS;
RHODOPSIN;
CHICKEN RED (IODOPSIN);
MOLECULAR EVOLUTION;
CHLOIRIDE BINDING;
MOLECULAR NET CHARGE;
OIL-DROPLET;
D O I:
10.1016/0305-0491(95)00085-2
中图分类号:
Q5 [生物化学];
Q7 [分子生物学];
学科分类号:
071010 ;
081704 ;
摘要:
Determination of the primary structures of six kinds of vertebrate visual pigments enabled us to classify them into four groups of cone-type pigments. The phylogenetic tree demonstrated that an ancestor of vertebrate visual pigments evolved into four kinds of cone-type pigments, from one of which rhodopsins diverged. Tetrachromatic color vision of chicken is discussed on the basis of both the absorption spectra of purified cone pigments and the filtering effect of colored oil-droplets.