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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Shi, Yongsheng Yokoyama, Shozo |
| Description | Author Affiliation: Shi Y ( Department of Biology, Syracuse University, 130 College Place, Syracuse, NY 13244, USA.); |
| Abstract | Many fish, amphibians, reptiles, birds, and some mammals use UV vision for such basic activities as foraging, mate selection, and communication. UV vision is mediated by UV pigments in the short wavelength-sensitive type 1 (SWS1) group that absorb light maximally (lambda max) at approximately 360 nm. Reconstructed SWS1 pigments of most vertebrate ancestors have lambda max values of approximately 360 nm, whereas the ancestral avian pigment has a lambda max value of 393 nm. In the nonavian lineage, UV vision in many modern species is inherited directly from the vertebrate ancestor, whereas violet vision in others has evolved by different amino acid replacements at approximately 10 specific sites. In the avian lineage, the origin of the violet pigment and the subsequent restoration of UV pigments in some species are caused by amino acid replacements F49V/F86S/L116V/S118A and S90C, respectively. The use of UV vision is associated strongly with UV-dependent behaviors of organisms. When UV light is not available or is unimportant to organisms, the SWS1 gene can become nonfunctional, as exemplified by coelacanth and dolphin. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 14 |
| Volume Number | 100 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 2003-07-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Color Perception Genetics Evolution, Molecular Phylogeny Rod Opsins Ultraviolet Rays Vertebrates Physiology Amino Acid Sequence Amino Acid Substitution Animals Behavior, Animal DNA, Recombinant Gene Deletion Gene Duplication Molecular Sequence Data Multigene Family Mutagenesis, Site-Directed Pseudogenes Chemistry Classification Sequence Alignment Sequence Homology, Amino Acid Species Specificity Comparative Study Research Support, U.S. Gov't, P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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