Functional genetics of human gut commensal Bacteroides thetaiotaomicron reveals metabolic requirements for growth across environments.
Functional genetics of human gut commensal Bacteroides thetaiotaomicron reveals metabolic requirements for growth across environments.
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DOI:
10.1016/j.celrep.2021.108789
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发表时间:
2021-03-02
期刊:
影响因子:
8.8
通讯作者:
Deutschbauer AM
中科院分区:
文献类型:
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作者:
Liu H;Shiver AL;Price MN;Carlson HK;Trotter VV;Chen Y;Escalante V;Ray J;Hern KE;Petzold CJ;Turnbaugh PJ;Huang KC;Arkin AP;Deutschbauer AM
Harnessing the microbiota for beneficial outcomes is limited by our poor understanding of the constituent bacteria, as the functions of most of their genes are unknown. Here, we measure the growth of a barcoded transposon mutant library of the gut commensal Bacteroides thetaiotaomicron on 48 carbon sources, in the presence of 56 stress-inducing compounds, and during mono-colonization of gnotobiotic mice. We identify 516 genes with a specific phenotype under only one or a few conditions, enabling informed predictions of gene function. For example, we identify a glycoside hydrolase important for growth on type I rhamnogalacturonan, a DUF4861 protein for glycosaminoglycan utilization, a 3-keto-glucoside hydrolase for disaccharide utilization, and a tripartite multidrug resistance system specifically for bile salt tolerance. Furthermore, we show that B. thetaiotaomicron uses alternative enzymes for synthesizing nitrogen-containing metabolic precursors based on ammonium availability and that these enzymes are used differentially in vivo in a diet-dependent manner. Liu et al. report large-scale, genome-wide fitness assays for the model human gut commensal Bacteroides thetaiotaomicron, both in vitro and in vivo. These data provide insights into the bacterium’s carbohydrate catabolism, stress responses, and adaptation to diet-dependent ammonium availability in the gut.
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影响因子:
4.4
作者:
ALLISON, C;MACFARLANE, GT
通讯作者:
MACFARLANE, GT
影响因子:
4.5
作者:
Deutschbauer A;Price MN;Wetmore KM;Shao W;Baumohl JK;Xu Z;Nguyen M;Tamse R;Davis RW;Arkin AP
通讯作者:
Arkin AP
影响因子:
3.2
作者:
Ampomah, Osei Yaw;Avetisyan, Anna;Bhuvaneswari, T. V.
通讯作者:
Bhuvaneswari, T. V.
影响因子:
7.1
作者:
Birkett, A;Muir, J;ODea, K
通讯作者:
ODea, K
DOI:
10.1038/nrg3182
发表时间:
2012-03-13
期刊:
Nature reviews. Genetics
影响因子:
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作者:
通讯作者:
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