Keratinolytic protease: a green biocatalyst for leather industry

被引:79
作者
Fang, Zhen [1 ,2 ]
Yong, Yang-Chun [1 ]
Zhang, Juan [2 ,3 ]
Du, Guocheng [2 ,4 ]
Chen, Jian [2 ,5 ]
机构
[1] Jiangsu Univ, Biofuels Inst, Sch Environm, 301 Xuefu Rd, Zhenjiang 212013, Jiangsu, Peoples R China
[2] Jiangnan Univ, Sch Biotechnol, 1800 Lihu Rd, Wuxi 214122, Peoples R China
[3] Jiangnan Univ, Key Lab Ind Biotechnol, Minist Educ, Wuxi 214122, Peoples R China
[4] Jiangnan Univ, Key Lab Carbohydrate Chem & Biotechnol, Minist Educ, Wuxi 214122, Peoples R China
[5] Jiangnan Univ, Natl Engn Lab Cereal Fermentat Technol, Wuxi 214122, Peoples R China
基金
中国国家自然科学基金;
关键词
Unhairingprocess; Enzymaticcatalyst; Industrial biotechnology; Protein engineering; Lime sulfide free; Keratinolytic proteases; STENOTROPHOMONAS-MALTOPHILIA BBE11-1; REMARKABLE DEHAIRING CAPABILITIES; SITE-DIRECTED MUTAGENESIS; SOLID-STATE FERMENTATION; BACILLUS-SUBTILIS; SUBSTRATE-SPECIFICITY; ALKALINE PROTEASE; PRO-SEQUENCE; KERATINASE PRODUCTION; RECENT TRENDS;
D O I
10.1007/s00253-017-8484-1
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
Depilation/unhairing is the crucial but heavy pollution process in leather industry. Traditional inorganic sulfide treatment was the most widely used depilation technique in the past decades, which was usually detrimental to leather quality and resulted in serious environmental pollution. Using biocatalysts to substitute inorganic sulfide showed great advantages in environment protection and unhairing efficiency. Keratinolytic protease is one of the excellent biocatalysts to hydrolyze disulfide bond-rich proteins of hair and has little damage to leather. Biological treatment with keratinolytic proteases could largely reduce the quantity and toxicity of wastewater effluent from the leather industry. But low thermostability and substrate specificity or specific activity of these enzymes limited their practical application. Therefore, recent progresses on protein engineering strategies (site-directed mutagenesis, protein fusion, N/C-terminus truncation, and domain swapping) used to enhance the keratinolytic enzyme performance were presented.
引用
收藏
页码:7771 / 7779
页数:9
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