Tellurite and Tellurate Reduction by the Aerobic Anoxygenic Phototroph Erythromonas ursincola, Strain KR99 Is Carried out by a Novel Membrane Associated Enzyme
Erythromonas ursincola, strain KR99 isolated from a freshwater thermal spring of Kamchatka Island in Russia, resists and reduces very high levels of toxic tellurite under aerobic conditions. Reduction is carried out by a constitutively expressed membrane associated enzyme, which was purified and cha...
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ftmdpi:oai:mdpi.com:/2076-2607/5/2/20/ 2023-08-20T04:07:40+02:00 Tellurite and Tellurate Reduction by the Aerobic Anoxygenic Phototroph Erythromonas ursincola, Strain KR99 Is Carried out by a Novel Membrane Associated Enzyme Chris Maltman Lynda Donald Vladimir Yurkov agris 2017-04-19 application/pdf https://doi.org/10.3390/microorganisms5020020 EN eng Multidisciplinary Digital Publishing Institute Environmental Microbiology https://dx.doi.org/10.3390/microorganisms5020020 https://creativecommons.org/licenses/by/4.0/ Microorganisms; Volume 5; Issue 2; Pages: 20 tellurite tellurate tellurium reduction aerobic anoxygenic phototroph Text 2017 ftmdpi https://doi.org/10.3390/microorganisms5020020 2023-07-31T21:05:55Z Erythromonas ursincola, strain KR99 isolated from a freshwater thermal spring of Kamchatka Island in Russia, resists and reduces very high levels of toxic tellurite under aerobic conditions. Reduction is carried out by a constitutively expressed membrane associated enzyme, which was purified and characterized. The tellurite reductase has a molecular weight of 117 kDa, and is comprised of two subunits (62 and 55 kDa) in a 1:1 ratio. Optimal activity occurs at pH 7.0 and 28 °C. Tellurite reduction has a Vmax of 5.15 µmol/min/mg protein and a Km of 3.36 mM. The enzyme can also reduce tellurate with a Vmax and Km of 1.08 µmol/min/mg protein and 1.44 mM, respectively. This is the first purified membrane associated Te oxyanion reductase. Text Kamchatka MDPI Open Access Publishing Microorganisms 5 2 20 |
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English |
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tellurite tellurate tellurium reduction aerobic anoxygenic phototroph |
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tellurite tellurate tellurium reduction aerobic anoxygenic phototroph Chris Maltman Lynda Donald Vladimir Yurkov Tellurite and Tellurate Reduction by the Aerobic Anoxygenic Phototroph Erythromonas ursincola, Strain KR99 Is Carried out by a Novel Membrane Associated Enzyme |
topic_facet |
tellurite tellurate tellurium reduction aerobic anoxygenic phototroph |
description |
Erythromonas ursincola, strain KR99 isolated from a freshwater thermal spring of Kamchatka Island in Russia, resists and reduces very high levels of toxic tellurite under aerobic conditions. Reduction is carried out by a constitutively expressed membrane associated enzyme, which was purified and characterized. The tellurite reductase has a molecular weight of 117 kDa, and is comprised of two subunits (62 and 55 kDa) in a 1:1 ratio. Optimal activity occurs at pH 7.0 and 28 °C. Tellurite reduction has a Vmax of 5.15 µmol/min/mg protein and a Km of 3.36 mM. The enzyme can also reduce tellurate with a Vmax and Km of 1.08 µmol/min/mg protein and 1.44 mM, respectively. This is the first purified membrane associated Te oxyanion reductase. |
format |
Text |
author |
Chris Maltman Lynda Donald Vladimir Yurkov |
author_facet |
Chris Maltman Lynda Donald Vladimir Yurkov |
author_sort |
Chris Maltman |
title |
Tellurite and Tellurate Reduction by the Aerobic Anoxygenic Phototroph Erythromonas ursincola, Strain KR99 Is Carried out by a Novel Membrane Associated Enzyme |
title_short |
Tellurite and Tellurate Reduction by the Aerobic Anoxygenic Phototroph Erythromonas ursincola, Strain KR99 Is Carried out by a Novel Membrane Associated Enzyme |
title_full |
Tellurite and Tellurate Reduction by the Aerobic Anoxygenic Phototroph Erythromonas ursincola, Strain KR99 Is Carried out by a Novel Membrane Associated Enzyme |
title_fullStr |
Tellurite and Tellurate Reduction by the Aerobic Anoxygenic Phototroph Erythromonas ursincola, Strain KR99 Is Carried out by a Novel Membrane Associated Enzyme |
title_full_unstemmed |
Tellurite and Tellurate Reduction by the Aerobic Anoxygenic Phototroph Erythromonas ursincola, Strain KR99 Is Carried out by a Novel Membrane Associated Enzyme |
title_sort |
tellurite and tellurate reduction by the aerobic anoxygenic phototroph erythromonas ursincola, strain kr99 is carried out by a novel membrane associated enzyme |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2017 |
url |
https://doi.org/10.3390/microorganisms5020020 |
op_coverage |
agris |
genre |
Kamchatka |
genre_facet |
Kamchatka |
op_source |
Microorganisms; Volume 5; Issue 2; Pages: 20 |
op_relation |
Environmental Microbiology https://dx.doi.org/10.3390/microorganisms5020020 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/microorganisms5020020 |
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Microorganisms |
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5 |
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20 |
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1774719471242444800 |