Salit I E, Blake M, Gotschlich E C
J Exp Med. 1980 Mar 1;151(3):716-25. doi: 10.1084/jem.151.3.716.
We have purified pili from isogenic opacity colony variants that were derived from 14 gonococcal strains. Pili purified from opaque colonies of one strain usually differed from pili purified from transparent colonies of the same strain. In 10 of the 14 strains examined, the apparent subunit molecular weight of pilin isolated from the opaque variants was larger than that seen with pilin obtained from transparent variants. In addition there were demonstrable intra-strain differences in the isoelectric point and buoyant density of pili derived from the opacity variants. Because gonococci express differing opacity phenotypes during the menstrual cycle, it is possible that the pili of these organisms may also alter in vivo.
我们从源自14株淋球菌菌株的同基因不透明菌落变体中纯化了菌毛。从一株菌株的不透明菌落中纯化的菌毛通常与从同一菌株的透明菌落中纯化的菌毛不同。在所检测的14株菌株中的10株中,从不透明变体中分离出的菌毛蛋白的表观亚基分子量大于从透明变体中获得的菌毛蛋白。此外,从不透明变体衍生的菌毛在等电点和浮力密度方面存在明显的菌株内差异。由于淋球菌在月经周期中表达不同的不透明表型,这些生物体的菌毛在体内也可能发生变化。