Reusch V M, Hale S G, Hurly B J
J Bacteriol. 1982 Dec;152(3):1147-53. doi: 10.1128/jb.152.3.1147-1153.1982.
Vegetative bacilli and refractile endospores of Bacillus subtilis 168 were disrupted by homogenization with glass beads and fractionated by differential centrifugation. Most of the protein of endospores was particulate, whereas for bacilli most was soluble. Alanine racemase activity was sixfold higher in extract of endospores than in extract of bacilli and was particulate, whereas the enzyme from bacilli was soluble. The specific activities of seven other enzymes involved in peptidoglycan and teichoic acid biosynthesis were higher in extracts of bacilli than in those of endospores. The results suggest that restoration of activities of these seven enzymes to vegetative levels occurs during germination and outgrowth.
枯草芽孢杆菌168的营养体杆菌和折光性芽孢通过玻璃珠匀浆破碎,并通过差速离心进行分级分离。芽孢的大部分蛋白质是颗粒状的,而杆菌的大部分蛋白质是可溶的。丙氨酸消旋酶活性在芽孢提取物中比在杆菌提取物中高六倍,并且是颗粒状的,而来自杆菌的酶是可溶的。参与肽聚糖和磷壁酸生物合成的其他七种酶的比活性在杆菌提取物中高于芽孢提取物。结果表明,在萌发和生长过程中,这七种酶的活性恢复到营养体水平。