Engineered yeast tolerance enables efficient production from toxified lignocellulosic feedstocks.
Engineered yeast tolerance enables efficient production from toxified lignocellulosic feedstocks.
复制标题
工程酵母的耐受性可以从造成的木质纤维素原料中有效产生。
DOI:
10.1126/sciadv.abf7613
复制
发表时间:
2021-06
期刊:
影响因子:
13.6
通讯作者:
Stephanopoulos G
中科院分区:
文献类型:
--
作者:
Lam FH;Turanlı-Yıldız B;Liu D;Resch MG;Fink GR;Stephanopoulos G
Rationally engineered tolerance enables broadly efficient lignocellulosic fermentation of diverse feedstocks and bioproducts. Lignocellulosic biomass remains unharnessed for the production of renewable fuels and chemicals due to challenges in deconstruction and the toxicity its hydrolysates pose to fermentation microorganisms. Here, we show in Saccharomyces cerevisiae that engineered aldehyde reduction and elevated extracellular potassium and pH are sufficient to enable near-parity production between inhibitor-laden and inhibitor-free feedstocks. By specifically targeting the universal hydrolysate inhibitors, a single strain is enhanced to tolerate a broad diversity of highly toxified genuine feedstocks and consistently achieve industrial-scale titers (cellulosic ethanol of >100 grams per liter when toxified). Furthermore, a functionally orthogonal, lightweight design enables seamless transferability to existing metabolically engineered chassis strains: We endow full, multifeedstock tolerance on a xylose-consuming strain and one producing the biodegradable plastics precursor lactic acid. The demonstration of “drop-in” hydrolysate competence enables the potential of cost-effective, at-scale biomass utilization for cellulosic fuel and nonfuel products alike.
登录
查看更多内容
影响因子:
8.8
作者:
Huang Z;Chen K;Zhang J;Li Y;Wang H;Cui D;Tang J;Liu Y;Shi X;Li W;Liu D;Chen R;Sucgang RS;Pan X
通讯作者:
Pan X
影响因子:
6.3
作者:
Allen SA;Clark W;McCaffery JM;Cai Z;Lanctot A;Slininger PJ;Liu ZL;Gorsich SW
通讯作者:
Gorsich SW
影响因子:
16.8
作者:
Jerison ER;Nguyen Ba AN;Desai MM;Kryazhimskiy S
通讯作者:
Kryazhimskiy S
影响因子:
3.2
作者:
Casey, Elizabeth;Sedlak, Miroslav;Mosier, Nathan S.
通讯作者:
Mosier, Nathan S.
影响因子:
2.6
作者:
GIETZ, RD;SCHIESTL, RH;WOODS, RA
通讯作者:
WOODS, RA