Ullrich K, von Figura K
Biochem J. 1979 Jul 15;182(1):245-7. doi: 10.1042/bj1820245.
beta-N-Acetylglucosaminidase isolated from the secretions of fibroblasts of mucolipidosis-II and -III patients is internalized by cultured non-parenchymal rat liver cells. The rate of endocytosis compared with that of beta-N-acetylglucosaminidase from control fibroblasts was 11 and 19% for the enzyme from mucolipidosis-II and -III patients respectively. The inhibition of endocytosis by mannan indicates that the beta-N-acetylglucosaminidase from mucolipidosis-II and -III patients is recognized by cell-surface receptors specific for mannose.
从黏脂贮积症II型和III型患者成纤维细胞分泌物中分离出的β-N-乙酰氨基葡萄糖苷酶被培养的大鼠非实质肝细胞内化。与来自对照成纤维细胞的β-N-乙酰氨基葡萄糖苷酶相比,黏脂贮积症II型和III型患者的该酶内吞率分别为11%和19%。甘露聚糖对内吞作用的抑制表明,黏脂贮积症II型和III型患者的β-N-乙酰氨基葡萄糖苷酶被对甘露糖具有特异性的细胞表面受体识别。