a bacterial protein puts a new twist on dna transcription细菌蛋白质给dna转录一个新的转折.pdf

Synopses of Research Articles Ciliate Genome Sequence Reveals Unique Features of a Model Eukaryote Richard Robinson | DOI: 10.1371/journal.pbio.0040304 One reason to sequence the genomes from what were once free-living of non-human organisms is to better cyanobacteria; typically, many of the understand our similarities and genes of such an endosymbiont are differences. And, at fi rst sight, it is hard shifted into the host nucleus, as they to imagine a eukaryote more different have been in the apicomplexans and from humans than Tetrahymena dinofl agellates. T. thermophila has no thermophila. A relative of Paramecium, plastids, but it has been suggested this single-celled creature has a strong that its ancestors did. The authors but fl exible exterior covered with discovered no remnants of plastid rows of cilia; but it is inside where genes within T. thermophila, strongly things seem to get really alien. Each suggesting that plastid acquisition cell contains not one but two nuclei: a occurred after the other two groups micronucleus, which contains only fi ve split off from the ciliate