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Structure and function of cema homologue (PXCA) in cyanobacteria

机译:蓝细菌中Cema同系物(PXCA)的结构和功能

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摘要

The cemA (ycf10) gene coes for a chloroplast envelope membrane protein and is conserved in higher and lower plants and in algae. CemA in higher plants consists of 229 to 231 amino-acids whereas that in liverwort (Marchantia) and Chlamydomonas is much larger and consists of 434 and 500 amino-acids, respectively. Recent sequencing of whole chloroplast genomes of Porphyra and Chlorella revealed that cemA in these algae encodes proteins of 278 and 264 amino-acids, respectively. The function of CemA is not known. Rolland et al have constructed mutants by disrupting cemA in Chlamydomonas. They showed that the disruption of the gene led to increased light sensitivity and affected CO_2-dependent photosynthesis and inorganic carbon uptake.
机译:cemA(ycf10)基因编码叶绿体包膜膜蛋白,在高等植物和低等植物以及藻类中均保守。高等植物中的CemA由229至231个氨基酸组成,而艾蒿(Marchantia)和衣藻中的CemA则大得多,分别由434和500个氨基酸组成。最近对紫菜和小球藻的整个叶绿体基因组进行测序后发现,这些藻中的cemA分别编码278和264个氨基酸的蛋白质。 CemA的功能未知。 Rolland等人通过破坏衣藻中的cemA构建了突变体。他们表明,该基因的破坏导致光敏性增加,并影响了依赖CO_2的光合作用和无机碳的吸收。

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