蓝藻聚球藻属菌株PCC 7942的亚硝酸盐特异性主动转运系统。
Nitrite-specific active transport system of the cyanobacterium Synechococcus sp. strain PCC 7942.
作者信息
Maeda S, Okamura M, Kobayashi M, Omata T
机构信息
Department of Applied Biological Sciences, School of Agricultural Sciences, Nagoya University, Nagoya 464-8601, Japan.
出版信息
J Bacteriol. 1998 Dec;180(24):6761-3. doi: 10.1128/JB.180.24.6761-6763.1998.
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.
摘要
对缺乏ATP结合盒型硝酸盐-亚硝酸盐双特异性转运蛋白的聚球藻属PCC 7942菌株突变体的亚硝酸盐摄取能力研究表明，存在一种亚硝酸盐特异性主动转运系统，其表观Km（NO2-）约为20微摩尔。与硝酸盐-亚硝酸盐双特异性转运蛋白类似，亚硝酸盐特异性转运蛋白受到培养基中铵的可逆抑制。
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