Clevers Hans
Hubrecht Laboratory, Center for Biomedical Genetics, Uppsalalaan 8, Utrecht 3584 CT, The Netherlands.
Dev Cell. 2004 Aug;7(2):150-1. doi: 10.1016/j.devcel.2004.07.013.
Mucins may be the ugly ducklings of molecular biology. Their large size, repetitive nature, and unglamorous biological activities have not favored their study. However, integral membrane mucins have conserved intracellular C termini that may influence intracellular signaling. In a recent issue of Genes & Development, Cullen et al. show that the C terminus of membrane mucin-like Msb2 activates a CDC42/MAPK cascade to control filamentous growth of baker's yeast.
黏蛋白可能是分子生物学中的丑小鸭。它们体积庞大、具有重复性且生物学活性平淡无奇,这些因素都不利于对它们的研究。然而,整合膜黏蛋白具有保守的细胞内C末端,这可能会影响细胞内信号传导。在最近一期的《基因与发育》杂志上,卡伦等人表明,膜黏蛋白样Msb2的C末端激活了CDC42/丝裂原活化蛋白激酶级联反应,以控制面包酵母的丝状生长。