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Naoki Minamino¹, Haruki Fujii², Haruhiko Murata²

¹Division of Cellular Dynamics, National Institute for Basic Biology, Nishigonaka 38, Myodaiji, Okazaki, Aichi, 444-8585 Japan.

Plant & cell physiology

|October 7, 2023

概括

植物进化表明多种多样的膜贩运蛋白质,包括ANTH蛋白质. 在Marchantia polymorpha中发现的一种独特的植物蛋白质PICALM-K,在精子中具有与鞭毛相关的新功能.

科学领域:

细胞生物学细胞生物学
进化生物学进化生物学
分子生物学分子生物学

背景情况:

膜贩运对于细胞运输至关重要,其机械在真核生物血统中多样化.
像AP180 N-终端同质性 (ANTH) 蛋白质这样的适应蛋白家族在克拉特林介导的内细胞分裂过程中调节囊泡形成和货物分类.
与酵母和动物相比,植物进化显示了ANTH蛋白的显著扩张和多样化.

研究的目的:

为了研究植物进化过程中ANTH蛋白的多样化.
为了描述一种新的,植物独特的蛋白,PICALM-K,在Marchantia polymorpha中发现.
为了阐明MpPICALM-K在M. polymorpha中的功能.

主要方法:

基因组分析以确定不同植物物种中的ANTH蛋白质库.
基因和细胞生物学方法来表征Marchantia polymorpha.K中的MpPICALM-K.
基于人工智能 (AI) 的蛋白质分析方法.

主要成果:

马尔坎蒂亚多态生物拥有更简单的规范ANTH蛋白质,但编码了一个独特的非规范ANTH蛋白质,具有假定酶域,名为PICALM-K.
PICALM-K展现了古老的起源,有证据表明在其他植物系中出现了多次次要损失.
MpPICALM-K在精子中表现出与鞭毛相关的独特功能,与公认的ANTH蛋白不同.

结论:

蛋白在整个进化过程中经历了显著的功能多样化.
PICALM-K代表了一种植物独特的ANTH蛋白,可能是通过外因子混杂的新功能化产生的.
这一发现突显了ANTH蛋白在植物中超出了规范的内细胞通路之外的新作用.

关键词:

马尔坎蒂亚多态植物 (Marchantia polymorpha) 是一个多态植物.深度学习是一种深度学习.进化进化进化进化进化进化进化旗 (Flagellum) 是一种状的植物.这就是PICALM.这种类型的精子是精子.

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