ArticleMarine biotechnology (New York, N.Y.)2021
The Function of β-1,4-Glucuronosyltransferase WelK in the Sphingan WL Gum Biosynthesis Process in Marine Sphingomonas sp. WG.
Article in Marine biotechnology (New York, N.Y.), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed, 11 citations in OpenAlex.
- pH-Responsive Deacetylated Sphingan WL Gum-Based Microgels for the Oral Delivery of Ciprofloxacin Hydrochloride.ACS omega · 2024Article
- Hybrid Histidine Kinase WelA ofFrontiers in microbiology · 2022Article
- Identification of the Key Enzymes in WL Gum Biosynthesis and Critical Composition in Viscosity Control.Frontiers in bioengineering and biotechnology · 2022Article
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Authors and funding
8 authors at 1 institution in 1 country.
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Abstract
The marine-derived polysaccharide WL gum produced by Sphingomonas sp. WG showed commercial utility potential in ink, food, and oil industries. A β-1,4-glucuronosyltransferase WelK was predicted to catalyze the transfer of glucuronic acid from UDP-glucuronic acid to glucosyl-α-pyrophosphorylpolyprenol intermediate in the WL gum biosynthesis process. Its function was evaluated by bioinformatical analysis, gene knocking out, and overexpressing strategies. Compared to the wild strain, the WL gum production and broth viscosity of the mutant ∆welK were decreased by 71.5% and 99.2% when cultured for 48 h. The gene disruption led to the failure of product preparation. Homologous expression of welK in the native organism can effectively improve WL gum production. When glucose concentration was 6.7%, the WL gum production by the welK-overexpressing strain cultured for 60 h and 84 h reached 32.65 and 43.13 g/L, 134.1%, and 114% of the wild strain. The polysaccharide composition and qRT-PCR analysis showed that the glucuronic acid content was closely related to the expression level of welK. Thus, WelK was proved to play a critical role in the WL gum synthesis and will be an attractive target for metabolic engineering. Our experiment provided a genetic manipulation method for the functional characterization of genes in Sphingomonas sp. WG.
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