PMID- 26838339 OWN - NLM STAT- MEDLINE DCOM- 20170406 LR - 20170406 IS - 1738-8872 (Electronic) IS - 1017-7825 (Linking) VI - 26 IP - 5 DP - 2016 May 28 TI - Cell Surface Display of Four Types of Solanum nigrum Metallothionein on Saccharomyces cerevisiae for Biosorption of Cadmium. PG - 846-53 LID - 10.4014/jmb.1512.12041 [doi] AB - We displayed four types of Solanum nigrum metallothionein (SMT) for the first time on the surface of Saccharomyces cerevisiae using an alpha-agglutinin-based display system. The SMT genes were amplified by RT-PCR. The plasmid pYES2 was used to construct the expression vector. Transformed yeast strains were confirmed by PCR amplification and custom sequencing. Surface-expressed metallothioneins were indirectly indicated by the enhanced cadmium sorption capacity. Flame atomic absorption spectrophotometry was used to examine the concentration of Cd(2+) in this study. The transformed yeast strains showed much higher resistance ability to Cd(2+) compared with the control. Strikingly, their Cd(2+) accumulation was almost twice as much as that of the wild-type yeast cells. Furthermore, surface-engineered yeast strains could effectively adsorb ultra-trace cadmium and accumulate Cd(2+) under a wide range of pH levels, from 3 to 7, without disturbing the Cu(2+) and Hg(2+). Four types of surfaceengineered Saccharomyces cerevisiae strains were constructed and they could be used to purify Cd(2+)-contaminated water and adsorb ultra-trace cadmium effectively. The surface-engineered Saccharomyces cerevisiae strains would be useful tools for the bioremediation and biosorption of environmental cadmium contaminants. FAU - Wei, Qinguo AU - Wei Q AD - College of Life Science, Qufu Normal University, Qufu, Shandong 273165, P.R. China. AD - Department of Biotechnology, Weifang Business Vocational College, Zhucheng, Shandong 262234, P.R. China. FAU - Zhang, Honghai AU - Zhang H AD - College of Life Science, Qufu Normal University, Qufu, Shandong 273165, P.R. China. FAU - Guo, Dongge AU - Guo D AD - College of Life Science, Qufu Normal University, Qufu, Shandong 273165, P.R. China. FAU - Ma, Shisheng AU - Ma S AD - College of Life Science, Qufu Normal University, Qufu, Shandong 273165, P.R. China. LA - eng PT - Journal Article PL - Korea (South) TA - J Microbiol Biotechnol JT - Journal of microbiology and biotechnology JID - 9431852 RN - 0 (DNA, Complementary) RN - 0 (Plant Proteins) RN - 0 (Trace Elements) RN - 00BH33GNGH (Cadmium) RN - 9038-94-2 (Metallothionein) SB - IM MH - Adsorption MH - Biodegradation, Environmental MH - Cadmium/*metabolism MH - Cell Membrane/chemistry/metabolism MH - DNA, Complementary/genetics MH - Escherichia coli/genetics MH - Genes, Plant MH - Genetic Engineering/methods MH - Metallothionein/*biosynthesis/*genetics/metabolism MH - Plant Proteins/biosynthesis/chemistry/genetics MH - Plasmids/genetics MH - Saccharomyces cerevisiae/*genetics/*metabolism MH - Solanum nigrum/chemistry/*genetics/*metabolism MH - Surface Properties MH - Trace Elements/chemistry OTO - NOTNLM OT - Cadmium OT - Metallothionein OT - Saccharomyces cerevisiae OT - Solanum nigrum OT - Surface display OT - flame atomic absorption spectrophotometer(FAAS) EDAT- 2016/02/04 06:00 MHDA- 2017/04/07 06:00 CRDT- 2016/02/04 06:00 PHST- 2016/02/04 06:00 [entrez] PHST- 2016/02/04 06:00 [pubmed] PHST- 2017/04/07 06:00 [medline] AID - 10.4014/jmb.1512.12041 [pii] AID - 10.4014/jmb.1512.12041 [doi] PST - ppublish SO - J Microbiol Biotechnol. 2016 May 28;26(5):846-53. doi: 10.4014/jmb.1512.12041.