The rbcS gene coding for the small subunit of ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) of the brown alga Pylaiella littoralis is located within the plastid genome and is transcribed as a single polycistronic mRNA with the gene for the large subunit of Rubisco, rbcL. The structure of the Rubisco operon from P. littoralis was determined. Molecular phylogenies for rbcS and rbcL with a wide range of prokaryotes and eukaryotes were constructed which are congruent with recent evidence for polyphyletic plastid origins. Both rbcL and rbcS of the beta-purple bacterium Alcaligenes eutrophus clearly cluster with the rhodophyte and chromophyte proteins. The data suggest that the Rubisco operons of red algal and chromophytic plastids derive from beta-purple eubacterial antecedents, rather than the cyanobacterial lineage of eubacteria from which other of their genes derive. This implies a lateral transfer of Rubisco genes from beta-purple eubacterial ancestors to the cyanobacterial ancestor of rhodophyte and chromophyte plastids.

译文

编码褐藻褐藻毕赤酵母的核糖-1,5-双磷酸羧化酶/加氧酶(Rubisco)的小亚基的rbcS基因位于质体基因组内,并转录成单个多顺反子mRNA,并带有大亚基的基因的Rubisco,rbcL。确定了来自滨海假单胞菌的Rubisco操纵子的结构。构建了具有广泛的原核生物和真核生物的rbcS和rbcL的分子系统学,与最近的多系统质体起源证据相吻合。 β紫色细菌嗜酸拟南芥的rbcL和rbcS都清楚地与红景天和发色团蛋白聚集在一起。数据表明,红色藻类和发色质体的Rubisco操纵子来源于β紫色的真细菌先例,而不是其其他基因的真细菌的蓝细菌谱系。这意味着Rubisco基因从β紫色真细菌祖先到红藻和生色质体的蓝细菌祖先的侧向转移。

+1
+2
100研值 100研值 ¥99课程
检索文献一次
下载文献一次

去下载>

成功解锁2个技能,为你点赞

《SCI写作十大必备语法》
解决你的SCI语法难题!

技能熟练度+1

视频课《玩转文献检索》
让你成为检索达人!

恭喜完成新手挑战

手机微信扫一扫,添加好友领取

免费领《Endnote文献管理工具+教程》

微信扫码, 免费领取

手机登录

获取验证码
登录