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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Deng, Xu He, Ning He, Jinmei |
| Description | Author Affiliation: Deng X ( College of Life Science, Shenzhen Key Laboratory of Microbial Genetic Engineering, Shenzhen University, Shenzhen 518060, PR China. dengxu@szu.edu.cn) |
| Abstract | Comparative evaluation on Ni(2+)-uptake of two nickel-affinity transmembrane proteins (NiCoTs) respectively from Helocobacter pylori (NixA) and Staphylococcus aureus (NisA) was performed. Expression of NiCoTs alone did not promote Ni(2+) uptake of the recombinant strains and made the growth susceptible to Ni(2+). However, recombinant strains expressing both NiCoTs and Metallothionein (MT) showed enhanced tolerance to Ni(2+) and Ni(2+) uptake. The maximum Ni(2+)-uptake capacity of recombinant strain N1c expressing NixA+MT reached 83.33mgg(-1), higher than 45.45mgg(-1) of recombinant strain N1d expressing NisA+MT. N1c exhibited more effective Ni(2+) accumulation than N1d in the presence of Na(+), Co(2+) and Cd(2+). NiCoTs promoted intracellular Ni(2+) uptake of the recombinant strains. Phosphate groups dominated Ni(2+) binding of wild type Escherichia coli, but carboxyl groups contributed more for N1c and N1d. The result suggested that NixA has a higher specificity in Ni(2+) binding than NisA, and both NiCoTs and MT are important for Ni(2+) bioaccumulation. |
| ISSN | 09608524 |
| Volume Number | 130 |
| e-ISSN | 18732976 |
| Journal | Bioresource Technology |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2013-02-01 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Membrane Transport Proteins Metabolism Nickel Cadmium Cobalt Escherichia Coli Enzymology Genetics Helicobacter Pylori Recombinant Proteins Sodium Staphylococcus Aureus Comparative Study Evaluation Studies Journal Article Research Support, Non-u.s. Gov't Discipline Bioresource |
| Content Type | Text |
| Resource Type | Article |
| Subject | Waste Management and Disposal Medicine Environmental Engineering Renewable Energy, Sustainability and the Environment Bioengineering |
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