THE CZC OPERON OF ALCALIGENES-EUTROPHUS CH34 - FROM RESISTANCE MECHANISM TO THE REMOVAL OF HEAVY-METALS

被引：128

作者：

DIELS, L ^{[1
]}

DONG, QH ^{[1
]}

VANDERLELIE, D ^{[1
]}

BAEYENS, W ^{[1
]}

MERGEAY, M ^{[1
]}

机构：

[1] VLAAMSE INSTELLING TECHNOL ONDERZOEK, B-2400 MOL, BELGIUM

来源：

JOURNAL OF INDUSTRIAL MICROBIOLOGY | 1995年 / 14卷 / 02期

关键词：

SOIL BACTERIA; ALCALIGENES; PLASMID; CADMIUM; METAL RESISTANCE; CATION EFFLUX; GENE FUSION; BIOPRECIPITATION; BIOREACTOR;

D O I：

10.1007/BF01569896

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：

The plasmid-borne etc operon ensures for resistance to Cd2+, Zn2+ and Co2+ ions through a tricomponent export pathway and is associated to various conjugative plasmids of A. eutrophus strains isolated from metal-contaminated industrial areas. The etc region of pMOL30 was reassessed especially for the segments located upstream and downstream the structural genes czc CBA. In cultures grown with high concentrations of heavy metals, czc-mediated efflux of cations is followed by a process of metal bioprecipitation. These observations led to the development of bioreactors designed for the removal of heavy metals from polluted effluents.

引用

页码：142 / 153

页数：12