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A Nucleus-encoded Topological Specificity Factor PpMinE in Physcomitrella patens has Conserved Function Similar to Its Chloroplast-encoded Ancestor
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作者 朱佳瑛 刘维仲 +2 位作者 周伟巍 胡勇 何奕昆 《Journal of Genetics and Genomics》 SCIE CAS CSCD 北大核心 2007年第3期229-238,共10页
A nucleus-encoded MinE gene, designated PpMinE, from Physcomitrella patens was identified using RT-PCR. The presence of both N- and C-terminal extensions in PpMinE protein suggested its cyanobacterial origin. The tran... A nucleus-encoded MinE gene, designated PpMinE, from Physcomitrella patens was identified using RT-PCR. The presence of both N- and C-terminal extensions in PpMinE protein suggested its cyanobacterial origin. The transient expression of PpMinE using green fluorescent protein fusion in tobacco (Nicotiana tabacum L.) indicated that the PpMinE was a chloroplast-targeted protein. Overexpression of PpMinE in Escherichia coli caused division site misplacement and minicell formation, suggesting evolutionary functional conservation of MinE during plant phylogenesis. According to the phylogenetic tree, PpMinE protein has a close relationship with the highland plants, which suggests that the transfer events of MinE gene from plastid to nucleus might have occurred before the origin of the land plants. 展开更多
关键词 Physcomitrella patens plastid division PpMinE lateral gene transfer (LGT) evolution transient expression
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