EVOLUTION OF ACTIN GENE FAMILIES OF SEA-URCHINS

被引：20

作者：

FANG, H ^{[1
]}

BRANDHORST, BP ^{[1
]}

机构：

[1] SIMON FRASER UNIV,DEPT MOLEC BIOL & BIOCHEM,BURNABY V5A 1S6,BC,CANADA

来源：

JOURNAL OF MOLECULAR EVOLUTION | 1994年 / 39卷 / 04期

关键词：

ACTIN GENE; GENE EVOLUTION; SEA URCHIN; ECHINOIDS; ECHINODERMS; CODON BIAS;

D O I：

10.1007/BF00160267

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：

The actin gene family of the sea urchin Lytechinus pictus includes a single muscle actin gene, LpM, and four cytoskeletal actin genes: LpC1, LpC2, LpC3, and LpC4. The origin and relationship of these actin genes to members of the actin gene family of the sea urchin Strongylocentrotus purpuratus were considered. Comparison of deduced amino acid sequences suggested a close relationship between LpC1 and the CyI-CyII subfamily of S. purpuratus actin genes, and between LpC2 and the CyIII subfamily of S. purpuratus actin genes; the muscle actin genes were orthologous. It is proposed that two divergent cytoskeletal actin genes of the common ancestral sea urchin gave rise by duplication to the extant cytoskeletal actin genes of these species, some of which have changed 3' noncoding sequences while others have maintained a terminus highly conserved among sea urchin actin genes.

引用

页码：347 / 356

页数：10

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