Assertion: proline | /r/CapableOf | act as a carbon source
Facets:
value: to replenish tca cycle intermediates
type: PURPOSE
Source sentences:
text: Initial accounts in insects showed that proline acts as a carbon source to replenish TCA cycle intermediates (defined as an anaplerotic role), thereby allowing maximal flux through the TCA cycle during the oxidation of carbohydrates [39–41], especially important during the transition from rest to flight .