Dataset Information

Drosophila Prominin-like, a homolog of CD133, interacts with ND20 to maintain mitochondrial function.

ABSTRACT:

Background

Drosophila Prominin-like is a homolog of mammalian CD133, which is recognized as a biomarker for stem cells. The interacting proteins of CD133 and their biological functions remain elusive.

Results

In this study, we using yeast two-hybrid assays, GST pull-down assay and co-immunoprecipitation (Co-IP) methods found that Drosophila Prominin-like interacts with ND20, a subunit of mitochondrial respiratory complex I. Bioinformatics analysis suggests that Prominin-like is a six-transmembrane glycoprotein which localizes on cellular membranes. Immunostaining and mitochondrial fractionation indicate that Drosophila Prominin-like could localize in the mitochondria. The knockdown of prominin-like in S2 cells resulted in transient mitochondrial dysfunctions as evidenced by reduced ATP production, elevated ROS generation and an accompanied reduction in mitochondrial proteins. Mitochondrial dysfunctions were detected in aged prominin-like mutant flies.

Conclusion

Our data indicates that Prominin-like acts to maintain mitochondrial function through its interaction with ND20 which, itself, is active in the mitochondrial electron transport chain. Our study provides insights into a novel molecular mechanism of Drosophila prominin-like and suggests a similar function of CD133 in mammals.

SUBMITTER: Wang X

PROVIDER: S-EPMC6923988 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature

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Publications

<i>Drosophila</i> Prominin-like, a homolog of CD133, interacts with ND20 to maintain mitochondrial function.

Wang Xuexiang X Zheng Huimei H Jia Zexiao Z Lei Zhaoying Z Li Mengyao M Zhuang Qianqian Q Zhou Hui H Qiu Yue Y Fu Yong Y Yang Xiaohang X Xi Yongmei Y Yan Qingfeng Q

Cell & bioscience 20191219

<h4>Background</h4><i>Drosophila</i> Prominin-like is a homolog of mammalian CD133, which is recognized as a biomarker for stem cells. The interacting proteins of CD133 and their biological functions remain elusive.<h4>Results</h4>In this study, we using yeast two-hybrid assays, GST pull-down assay and co-immunoprecipitation (Co-IP) methods found that <i>Drosophila</i> Prominin-like interacts with ND20, a subunit of mitochondrial respiratory complex I. Bioinformatics analysis suggests that Promi ...[more]

PMID: 31890150

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