Isolation, identification, and biochemical characterization of a novel bifunctional phosphomannomutase/phosphoglucomutase from the metagenome of the brown alga Laminaria digitata

doi:10.3389/fmicb.2022.1000634

IOCAS-IR > 实验海洋生物学重点实验室

	Isolation, identification, and biochemical characterization of a novel bifunctional phosphomannomutase/phosphoglucomutase from the metagenome of the brown alga Laminaria digitata
	Jackson, Stephen A.1,2; Duan, Maohang 3; Zhang, Pengyan3 ; Ihua, Maureen W.1; Stengel, Dagmar B.4; Duan, Delin 5,6,7; Dobson, Alan D. W.1,2
	2022-09-23
发表期刊	FRONTIERS IN MICROBIOLOGY
卷号	13 页码:15
通讯作者	Duan, Delin(dlduan@qdio.ac.cn) ; Dobson, Alan D. W.(a.dobson@ucc.ie)
摘要	Macroalgae host diverse epiphytic bacterial communities with potential symbiotic roles including important roles influencing morphogenesis and growth of the host, nutrient exchange, and protection of the host from pathogens. Macroalgal cell wall structures, exudates, and intra-cellular environments possess numerous complex and valuable carbohydrates such as cellulose, hemi-cellulose, mannans, alginates, fucoidans, and laminarin. Bacterial colonizers of macroalgae are important carbon cyclers, acquiring nutrition from living macroalgae and also from decaying macroalgae. Seaweed epiphytic communities are a rich source of diverse carbohydrate-active enzymes which may have useful applications in industrial bioprocessing. With this in mind, we constructed a large insert fosmid clone library from the metagenome of Laminaria digitata (Ochrophyta) in which decay was induced. Subsequent sequencing of a fosmid clone insert revealed the presence of a gene encoding a bifunctional phosphomannomutase/phosphoglucomutase (PMM/PGM) enzyme 10L6AlgC, closely related to a protein from the halophilic marine bacterium, Cobetia sp. 10L6AlgC was subsequently heterologously expressed in Escherichia coli and biochemically characterized. The enzyme was found to possess both PMM and PGM activity, which had temperature and pH optima of 45 degrees C and 8.0, respectively; for both activities. The PMM activity had a K-m of 2.229 mM and V-max of 29.35 mM min(-1) mg(-1), while the PGM activity had a K-m of 0.5314 mM and a V-max of 644.7 mM min(-1) mg(-1). Overall characterization of the enzyme including the above parameters as well as the influence of various divalent cations on these activities revealed that 10L6AlgC has a unique biochemical profile when compared to previously characterized PMM/PGM bifunctional enzymes. Thus 10L6AlgC may find utility in enzyme-based production of biochemicals with different potential industrial applications, in which other bacterial PMM/PGMs have previously been used such as in the production of low-calorie sweeteners in the food industry.
关键词	Macroalga Phosphoglucomutase Phosphomannomutase Metagenomics Laminaria digitata
DOI	10.3389/fmicb.2022.1000634
收录类别	SCI
语种	英语
资助项目	Qingdao International Innovation Cooperation Project for Science and Technology[22-3-6-ghgg-1-hz] ; National Nature Science Foundation of China[42006101] ; Marine Biotechnology ERA/NET, NEPTUNA project[PBA/MB/15/02] ; Irish Department of Agriculture, Food and the Marine (DAFM) SMI-BIO project[15/F/698] ; BlueBioCOFUND project MINERVA
WOS研究方向	Microbiology
WOS类目	Microbiology
WOS记录号	WOS:000873947600001
出版者	FRONTIERS MEDIA SA
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/180543
专题	实验海洋生物学重点实验室
通讯作者	Duan, Delin; Dobson, Alan D. W.
作者单位	1.Univ Coll Cork, Sch Microbiol, Cork, Ireland 2.Univ Coll Cork, Environm Res Inst, Cork, Ireland 3.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Minist Agr & Rural Affairs, Key Lab Sustainable Dev Marine Fisheries, Qingdao, Peoples R China 4.Univ Galway, Ryan Inst Environm Marine & Energy Res, Sch Nat Sci, Bot & Plant Sci, Galway, Ireland 5.Chinese Acad Sci, Qingdao, Peoples R China 6.Chinese Acad Sci, Inst Oceanol, Ctr Ocean Mega Sci, Shandong Prov Key Lab Expt Marine Biol, Qingdao, Peoples R China 7.Pilot Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao, Peoples R China
通讯作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Jackson, Stephen A.,Duan, Maohang,Zhang, Pengyan,et al. Isolation, identification, and biochemical characterization of a novel bifunctional phosphomannomutase/phosphoglucomutase from the metagenome of the brown alga Laminaria digitata[J]. FRONTIERS IN MICROBIOLOGY,2022,13:15.
APA	Jackson, Stephen A..,Duan, Maohang.,Zhang, Pengyan.,Ihua, Maureen W..,Stengel, Dagmar B..,...&Dobson, Alan D. W..(2022).Isolation, identification, and biochemical characterization of a novel bifunctional phosphomannomutase/phosphoglucomutase from the metagenome of the brown alga Laminaria digitata.FRONTIERS IN MICROBIOLOGY,13,15.
MLA	Jackson, Stephen A.,et al."Isolation, identification, and biochemical characterization of a novel bifunctional phosphomannomutase/phosphoglucomutase from the metagenome of the brown alga Laminaria digitata".FRONTIERS IN MICROBIOLOGY 13(2022):15.

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