Nitrite-specific active transport system of the cyanobacterium Synechococcus sp. strain PCC 7942 |
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| Authors: | S Maeda M Okamura M Kobayashi T Omata |
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| Affiliation: | Department of Applied Biological Sciences, School of Agricultural Sciences, Nagoya University, Nagoya 464-8601, Japan. |
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| Abstract: | Studies on the nitrite uptake capability of a mutant of Synechococcus sp. strain PCC 7942 lacking the ATP-binding cassette-type nitrate-nitrite-bispecific transporter revealed the occurrence of a nitrite-specific active transport system with an apparent Km (NO2-) of about 20 microM. Similar to the nitrate-nitrite-bispecific transporter, the nitrite-specific transporter was reversibly inhibited by ammonium in the medium. |
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