A phylogenetic mixture model for gene family loss in parasitic bacteria.
A phylogenetic mixture model for gene family loss in parasitic bacteria.
复制标题
寄生细菌基因家族丢失的系统发育混合模型。
DOI:
10.1093/molbev/msp102
复制
发表时间:
2009
影响因子:
10.7
通讯作者:
Spencer M
中科院分区:
文献类型:
--
作者:
Spencer M
Gene families are frequently gained and lost from prokaryotic genomes. It is widely believed that the rate of loss was accelerated for some but not all gene families in lineages that became parasites or endosymbionts. This leads to a form of heterotachy that may be responsible for the poor performance of phylogeny estimation based on gene content. We describe a mixture model that accounts for this heterotachy. We show that this model fits data on the distribution of gene families across bacteria from the COG database much better than previous models. However, it still favors an artifactual tree topology in which parasites form a clade over the more plausible 16S topology. In contrast to a previous model of genome dynamics, our model suggests that the ancestral bacterium had a small genome. We suggest that models of gene family gain and loss are likely to be more useful for understanding genome dynamics than for estimating phylogenetic trees.
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DOI:
10.1073/pnas.0400975101
发表时间:
2004-06-29
影响因子:
11.1
作者:
Boussau, B;Karlberg, EO;Andersson, SGE
通讯作者:
Andersson, SGE
影响因子:
10.7
作者:
Gu, X;Zhang, HM
通讯作者:
Zhang, HM
DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
Youichi Niimrua;Ken-ichiro Suzuki
通讯作者:
Ken-ichiro Suzuki
影响因子:
15.9
作者:
J. McInerney
通讯作者:
J. McInerney
影响因子:
10.7
作者:
Whelan, Simon
通讯作者:
Whelan, Simon