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Life in blue: Copper resistance mechanisms of bacteria and Archaea used in industrial biomining of minerals

Paper ID Volume ID Publish Year Pages File Format Full-Text
14429 1219 2010 10 PDF Available
Title
Life in blue: Copper resistance mechanisms of bacteria and Archaea used in industrial biomining of minerals
Abstract

Industrial biomining processes to extract copper, gold and other metals involve the use of extremophiles such as the acidophilic Acidithiobacillus ferrooxidans (Bacteria), and the thermoacidophilic Sulfolobus metallicus (Archaea). Together with other extremophiles these microorganisms subsist in habitats where they are exposed to copper concentrations higher than 100 mM. Herein we review the current knowledge on the Cu-resistance mechanisms found in these microorganisms. Recent information suggests that biomining extremophiles respond to extremely high Cu concentrations by using simultaneously all or most of the following key elements: 1) a wide repertoire of Cu-resistance determinants; 2) duplication of some of these Cu-resistance determinants; 3) existence of novel Cu chaperones; 4) a polyP-based Cu-resistance system, and 5) an oxidative stress defense system. Further insight of the biomining community members and their individual response to copper is highly relevant, since this could provide key information to the mining industry. In turn, this information could be used to select the more fit members of the bioleaching community to attain more efficient industrial biomining processes.

Keywords
Copper resistance; Biomining; Extremophiles; Oxidative stress; PolyP; Sulfolobales; Acidithiobacillus ferrooxidans
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Life in blue: Copper resistance mechanisms of bacteria and Archaea used in industrial biomining of minerals
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biotechnology Advances - Volume 28, Issue 6, November–December 2010, Pages 839–848
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us