Convergent evolution of the red- and green-like visual pigment genes in fish, Astyanax fasciatus, and human.
Convergent evolution of the red- and green-like visual pigment genes in fish, Astyanax fasciatus, and human.
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鱼类、Astyanax fasciatus 和人类中红色和绿色样视觉色素基因的趋同进化。
DOI：
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发表时间：
1990
影响因子：
11.1
通讯作者：
S. Yokoyama
中科院分区：
文献类型：
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作者：
R. Yokoyama;S. Yokoyama
我们已经分离和测序的基因从盲洞穴鱼，Astyanax fasciatus，是同源的人类红色和绿色视觉色素基因。这些数据有力地表明，与人类一样，这些鱼具有一个红色视觉色素基因和多个绿色视觉色素基因。通过比较人类和鱼类视色素基因的DNA序列，了解它们的系统发育关系，可以推断红色和绿色视色素中氨基酸取代的方向。结果表明，人类和鱼类的红色素是由绿色色素独立进化而来的，仅在少数关键位置发生了相同的氨基酸替换。
We have isolated and sequenced genes from the blind cave fish, Astyanax fasciatus, that are homologous to the human red and green visual pigment genes. The data strongly suggest that, like human, these fish have one red-like visual pigment gene and multiple green-like visual pigment genes. By comparing the DNA sequences of the human and fish visual pigment genes and knowing their phylogenetic relationship, one can infer the direction of amino acid substitutions in the red and green visual pigments. The results indicate that the red pigments in human and fish evolved from the green pigment independently by identical amino acid substitutions in only a few key positions.