Paszewski A, Grabski J
Acta Biochim Pol. 1976;23(4):321-4.
Considerable differences in the activities of cysteine and homocysteine synthase (EC 4.2.99.8), and in the ratio of these activities were observed in yeast strains representing different genera and species. This suggests that homocysteine synthesis directly from O-acetylhomoserine may predominate in some strains, whereas in the others homocysteine is formed from cysteine via cystathionine.
在代表不同属和种的酵母菌株中，观察到半胱氨酸和高半胱氨酸合酶（EC 4.2.99.8）的活性以及这些活性的比例存在相当大的差异。这表明，在某些菌株中，直接从O-乙酰高丝氨酸合成高半胱氨酸可能占主导地位，而在其他菌株中，高半胱氨酸是通过胱硫醚由半胱氨酸形成的。
