    2.6.1.4 | physiological function |
rice leaves usually show 3-4 times higher abundance of glutamate relative to serine, implicating that glutamate:glyoxylate aminotransferase GGAT may preferentially utilize glyoxylate to form glycine over serine:glyoxylate aminotransferase SGAT. When SGAT or GGAT activity is regulated by gene transformation or nitrogen deficiency, respectively, the glycine content is positively related to GGAT activities, while both serine and glycine contents are negatively related to SGAT activities, suggesting that GGAT preferentially catalyzes the conversion of glyoxylate into glycine while SGAT is mainly responsible for the transamination reaction of serine to hydroxypyruvate in the photorespiratory pathway of rice |
738913 |
