investigation of polarized-light absorption spectra of single crystals of cytosolic aspartate transaminase ( l-aspartate:2-oxoglutarate aminotransferase , ec 2.6.1.1 ) from chicken heart has revealed that the coenzyme 's absorption bands at 430 and 360 nm are polarized in opposite directions , both in crystals of the free enzyme and in its complex with a quasi-substrate , 2-methylaspartate .
C0004002
aspartate transaminase
C0002594
aminotransferase