What's the adjective for heterotroph? Here's the word you're looking for.
heterotropic
(chemistry) Concerning an effect in one entity that is controlled or influenced by a separate entity, such as when one ligand influences the binding of another ligand.
(physiology) Concernaing a process that abnormally takes place outside of its normal system as well as within its normal system.
“Some allosteric enzymes exhibit mixed homotropic and heterotropic interactions.”
“As Webster informs us, it is both psychomorphic and heterotropic. I suppose that's a fancy way of saying Illyrion is many things to many men.”
“In heterotropic allosteric regulation, the bacterial enzymes are activated by ADP and inhibited by phosphoenolpyruvate binding at the allosteric site.”