Proia R L, Eidels L, Hart D A
Infect Immun. 1979 Sep;25(3):786-91. doi: 10.1128/iai.25.3.786-791.1979.
Diphtheria toxin-binding glycoproteins of high molecular weight (greater than 100,000) were identified on the surface of lymph node and thymus cells from hamsters, a diphtheria toxin-sensitive species. These diphtheria toxin-binding glycoproteins also interacted with CRM197 protein, which possesses toxin-blocking activity, but not with diphtheria toxoid, fragment A of diphtheria toxin, or cholera toxin, all of which lack toxin-blocking activity. These observations are consistent with the hypothesis that the detected diphtheria toxin-binding glycoproteins are involved in intoxication of cells by this toxin and possibly serve as the plasma membrane receptors for diphtheria toxin.
在对白喉毒素敏感的仓鼠的淋巴结和胸腺细胞表面,鉴定出了高分子量(大于100,000)的白喉毒素结合糖蛋白。这些白喉毒素结合糖蛋白还与具有毒素阻断活性的CRM197蛋白相互作用,但不与白喉类毒素、白喉毒素A片段或霍乱毒素相互作用,后三者均缺乏毒素阻断活性。这些观察结果与以下假设一致,即检测到的白喉毒素结合糖蛋白参与了该毒素对细胞的毒害作用,并且可能作为白喉毒素的质膜受体。