Enhanced Biosorption of Nickel Ions on Immobilized Surface-Engineered Yeast Using Nickel-Binding Peptides

被引：16
|
作者：
Li, Hua [1 ,2 ]
Dong, Wei [2 ]
Liu, Yong [3 ]
Zhang, Haiyan [1 ,2 ]
Wang, Gang [2 ]
机构：
[1] Henan Univ, Inst Microbial Engn, Kaifeng, Peoples R China
[2] Henan Univ, Sch Life Sci, Kaifeng, Peoples R China
[3] Henan Univ, Coll Chem & Chem Engn, Kaifeng, Peoples R China
来源：
FRONTIERS IN MICROBIOLOGY | 2019年 / 10卷
关键词：
nickel-binding peptide; biosorption; phage peptide library; surface-engineered yeast; immobilization; PHAGE DISPLAY; PROTEIN; UREASE; TECHNOLOGY; CELLS;
D O I：
10.3389/fmicb.2019.01254
中图分类号：
Q93 [微生物学];
学科分类号：
071005 ; 100705 ;
摘要：
Three nickel-binding peptides were screened from a phage peptide library and displayed separately or in combination with surface-engineered Saccharomyces cerevisiae EBY100. The sorption of nickel ions on the surface of yeast cells increased with the increasing number of nickel Ni(II)-binding peptides displayed. The combined expression of the three peptides by EBY100/pYD1-N123 demonstrated the highest sorption of Ni(II) (2.603 +/- 0.004 g g(-1), dry weight) and an enhanced sorption capacity of 60.15%, compared to S. cerevisiae EBY100. An orthogonal test for yeast immobilization was designed. A maximum sorption capability of 68.62% was observed for a treatment at 25 degrees C with 2.0% calcium chloride and 3.0% sodium alginate.
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页数：7
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