THE RHODOPSIN-ENCODING GENE OF BONY FISH LACKS INTRONS

被引：71

作者：

FITZGIBBON, J ^{[1
]}

HOPE, A ^{[1
]}

SLOBODYANYUK, SJ ^{[1
]}

BELLINGHAM, J ^{[1
]}

BOWMAKER, JK ^{[1
]}

HUNT, DM ^{[1
]}

机构：

[1] UNIV LONDON,INST OPHTHALMOL,DEPT MOLEC GENET,LONDON EC1V 9EL,ENGLAND

来源：

GENE | 1995年 / 164卷 / 02期

关键词：

VISUAL PIGMENTS; EVOLUTION; TELEOSTS; HOMOLOGOUS RECOMBINATION;

D O I：

10.1016/0378-1119(95)00458-I

中图分类号：

Q3 [遗传学];

学科分类号：

071007 ; 090102 ;

摘要：

A study of the sequences of the rhodopsin-encoding genes (Rh) in eight fish species from two of the major subdivisions of the teleosts reveals that no introns are present in the coding region. This contrasts with the opsin-encoding genes of all other vertebrates where either four or five introns are invariably found. Phylogenetic analysis shows that this intronless teleost Rh is homologous to the intron-containing Rh of amphibia, birds and mammals. Possible mechanisms for intron loss are discussed, including replacement by homologous conversion of Rh with a processed cDNA.

引用

页码：273 / 277

页数：5

共 29 条

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