Assertion: histidine | /r/CapableOf | repress the operon
Facets:
value: by an attenuation mechanism
type: MANNER
Source sentences:
text: The genes for all enzymes of this pathway form an operon, and histidine represses the operon by an attenuation mechanism.
text: The genes for all enzymes of this pathway form an operon, and histidine represses the operon by an attenuation mechanism.