Calandra G B, Theodore T S
Infect Immun. 1975 Oct;12(4):750-3. doi: 10.1128/iai.12.4.750-753.1975.
Streptolysin O was measured in subcellular fractions of group A streptococci obtained after preparation of protoplasts in a hypertonic buffer containing raffinose. Most of the activity was located in the periplasm (the region between cell wall and membrane) and did not differ in several characteristics from that of extracellular streptolysin O. Of the enzymes used as subcellular markers, aldolase and maltase (cytoplasmic) and acid phosphatase (membrane associated) were in the same fractions as found in other bacteria. However, the location of alkaline phosphatase differed from that of other bacteria in the most of the activity was in cytoplasm rather than in the periplasm.
在含有棉子糖的高渗缓冲液中制备原生质体后,对A组链球菌的亚细胞组分进行了链球菌溶血素O的测定。大部分活性位于周质(细胞壁和细胞膜之间的区域),在几个特征上与细胞外链球菌溶血素O没有差异。用作亚细胞标志物的酶中,醛缩酶和麦芽糖酶(细胞质)以及酸性磷酸酶(膜相关)与在其他细菌中发现的位于相同的组分中。然而,碱性磷酸酶的定位与其他细菌不同,其大部分活性位于细胞质而非周质中。