Báo cáo khoa học: The activity of adenylyltransferase in Rhodospirillum rubrum is only affected by a-ketoglutarate and unmodified PII proteins, but not by glutamine, in vitro
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Ammonium assimilation is tightly regulated in nitrogen-fixing bacteria; the target of regulation is primarily the activity of the key enzyme glutamine synthetase that is regulated by reversible covalent modification by AMP groups in reactions catalysed by the bifunctional adenylyltransferase (ATase). The properties and regulation of ATase fromEscherichia colihave been studied in great detail.
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