花粉对Raji肿瘤细胞株的抑制作用研究

花粉是一种完全营养食品。研究花粉对Ｒａｊｉ肿瘤细胞株的抑制作用,结果：（１）破壁花粉中游离氨基酸组成基本与１６４０培养基相似;（２）花粉水提取液对Ｒａｊｉ肿瘤细胞株有明显的抑制作用     

Glycans of higher plant peroxidases: recent observations and future speculations

Plant peroxidases are composed of a peptide and associated heme, calcium and glycans. The 3D structure of the major cationic peanut peroxidase has revealed the sites of the heme and calcium. But the diffraction of the glycans was not sufficient to show their structure. This review presents research that has been executed to obtain putative glycans and their binding sites, and to gain an indirect insight into these glycans. It also offers approaches that will be used to determine the function of the glycans on the peanut peroxidase. Some comparisons are made with other plant glycoproteins including peroxidases from plants other than peanut.     

Aspartic acid-121 functions at the active site of bovine pancreatic ribonuclease

6-Phosphofructo-2-kinase (PFK2) is activated by a cAMP-dependent protein kinase, and inactivated by phosphatase, indicating the interconversion of PFK2. Inorganic phosphate also activates PFK2, and the optimum pH for the PFK2 activity varies with the concentration of phosphate. Phosphate also enhances the inactivation of PFK2 by citrate, suggesting that phosphate acts as a regulator of PFK2.