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Under oxic conditions of the system, NifL protein prevents the synthesis of the nif gene which is regulated by NifA protein, and whenever the system sensed limited ammonia the NtrC protein (usually inactive in the presence of ammonia) gets activated to promote NifA transcription [95]
The pack body is a classic top-loading and drawstring-closure design, and it has a capacity of around 60 liters of space
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