Novel insights into type 2 diacylglycerol acyltransferases in microalgaMyrmecia incisa

doi:10.1007/s10811-020-02071-x

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	Novel insights into type 2 diacylglycerol acyltransferases in microalgaMyrmecia incisa
	Liu, Wei1,2,3 ; Sun, Zheng 1,2,3; Chen, Chun-Xiu 1,2,3; Liu, Jian-Guo 4; Zhou, Zhi-Gang 1,2,3
	2020-03-12
发表期刊	JOURNAL OF APPLIED PHYCOLOGY
ISSN	0921-8971
页码	11
摘要	The green algaMyrmecia incisais rich in arachidonic acid (ArA), which mainly stores in lipid droplets in the form of triacylglycerol (TAG). In the de novo biosynthesis of TAG, diacylglycerol acyltransferase (DGAT) catalyzes the final and committed step as a rate-limiting enzyme. Previously, our lab has reported the first DGAT inM. incisa, and in this study, a new DGAT was further identified. Through homology search against our transcriptome database and annotation, a new contig corresponding to the putative DGAT2 was targeted, whose full-length cDNA was cloned by RACE and designated asMiDGAT2C. For this new MiDGAT2C, bioinformatics analyses revealed the presence of multiple conserved amino acid residues and sequences. Its function to synthesize TAG was determined by complementation assay using the TAG-deficient yeast system. Besides, MiDGAT2C was compared with other MiDGATs with respect to their substrate preference. Results of fatty acid feeding and in vitro enzymatic assays indicated diverse substrate specificities among MiDGAT members. While MiDGAT2C showed no activity on ArA, MiDGAT2A made the most contribution to incorporate ArA into TAG. Findings of this study expand our knowledge on the molecular basis of DGAT, shedding more light onM. incisaas a promising feedstock for ArA-rich TAG.
关键词	Triacylglycerol Myrmecia incisa Chlorophyta Cloning Functional complementation Substrate preference
DOI	10.1007/s10811-020-02071-x
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China (NSFC)[31772821] ; NSFC-Shandong Joint Fund[U1706209] ; State Double FirstClass Discipline Project of Aquaculture
WOS研究方向	Biotechnology & Applied Microbiology ; Marine & Freshwater Biology
WOS类目	Biotechnology & Applied Microbiology ; Marine & Freshwater Biology
WOS记录号	WOS:000562925900001
出版者	SPRINGER
引用统计	被引频次：10[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
版本	出版稿
条目标识符	http://ir.qdio.ac.cn/handle/337002/168307
专题	中国科学院海洋研究所
通讯作者	Zhou, Zhi-Gang
作者单位	1.Shanghai Ocean Univ, Minist Educ, Key Lab Explorat & Utilizat Aquat Genet Resources, Shanghai 201306, Peoples R China 2.Shanghai Ocean Univ, Minist Sci & Technol, Int Res Ctr Marine Biosci, Shanghai 201306, Peoples R China 3.Shanghai Ocean Univ, Natl Demonstrat Ctr Expt Fisheries Sci Educ, Shanghai 201306, Peoples R China 4.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Liu, Wei,Sun, Zheng,Chen, Chun-Xiu,et al. Novel insights into type 2 diacylglycerol acyltransferases in microalgaMyrmecia incisa[J]. JOURNAL OF APPLIED PHYCOLOGY,2020:11.
APA	Liu, Wei,Sun, Zheng,Chen, Chun-Xiu,Liu, Jian-Guo,&Zhou, Zhi-Gang.(2020).Novel insights into type 2 diacylglycerol acyltransferases in microalgaMyrmecia incisa.JOURNAL OF APPLIED PHYCOLOGY,11.
MLA	Liu, Wei,et al."Novel insights into type 2 diacylglycerol acyltransferases in microalgaMyrmecia incisa".JOURNAL OF APPLIED PHYCOLOGY (2020):11.

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