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.

引用

页数：7

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