PHYLOGENY OF THE ALPHA-CRYSTALLIN-RELATED HEAT-SHOCK PROTEINS

被引:65
作者
PLESOFSKYVIG, N
VIG, J
BRAMBL, R
机构
[1] UNIV MINNESOTA,INST PLANT MOLEC GENET,ST PAUL,MN 55108
[2] UNIV MINNESOTA,DEPT GENET & CELL BIOL,ST PAUL,MN 55108
关键词
HEAT-SHOCK PROTEINS; ALPHA-CRYSTALLIN; PHYLOGENY; MAXIMUM PARSIMONY; DISTANCE MATRIX;
D O I
10.1007/BF00160214
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
Phylogenetic relationships were examined among 35 alpha-crystallin-related heat-shock proteins from animals, plants, and fungi. Approximately one-third of the aligned amino acids in these proteins were conserved in 74% of the proteins, and three blocks of consensus sequence were identified. Relationships were established by maximum parsimony and distance matrix analyses of the aligned amino acid sequences. The inferred phylogeny trees show the plant proteins clearly divided into three major groups that are unrelated to taxonomy: the chloroplast-localized proteins and two groups that originate from a common ancestral plant protein. The animal proteins, in contrast, branch in accordance with taxonomy, the only clear exception being the alpha-crystallin subgrouping of vertebrates. This analysis indicates that the small heat-shock proteins of animals have diverged more widely than have the plant proteins, one group of which is especially stable.
引用
收藏
页码:537 / 545
页数:9
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