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UniProt functional annotation for P0AFA2 | ||
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| UniProt code: P0AFA2. |
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| Organism: | |
Escherichia coli (strain K12). |
| Taxonomy: | |
Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales; Enterobacteriaceae; Escherichia. |
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| Function: | |
Acts as a sensor for nitrate/nitrite and transduces signal of nitrate availability to the NarL protein and of both nitrate/nitrite to the NarP protein. NarX probably activates NarL and NarP by phosphorylation in the presence of nitrate. NarX also plays a negative role in controlling NarL activity, probably through dephosphorylation in the absence of nitrate. |
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| Catalytic activity: | |
Reaction=ATP + protein L-histidine = ADP + protein N-phospho-L- histidine.; EC=2.7.13.3; |
| Subcellular location: | |
Cell inner membrane {ECO:0000269|PubMed:15919996}; Multi-pass membrane protein {ECO:0000269|PubMed:15919996}. |
Annotations taken from UniProtKB at the EBI.