柔膜菌纲微生物核酸酶的特性
Properties of the nucleases of mollicutes.
作者信息
Pollack J D, Hoffmann P J
出版信息
J Bacteriol. 1982 Oct;152(1):538-41. doi: 10.1128/jb.152.1.538-541.1982.
Extracts of the Mollicutes Acholeplasma equifetale, Acholeplasma laidlawii B, Mycoplasma arthritidis. Mycoplasma pulmonis, and Mycoplasma pneumoniae had DNase and endonuclease activity. A. laidlawii B had at least two peaks of DNase activity in sucrose gradients with sedimentation coefficients of 3.1S and 4.3S. These fractions also had endonuclease activity with different substrate specificities. A. laidlawii B may have more than two peaks of endonuclease activity in sucrose gradients.
柔膜菌纲的马驹无胆甾原体、莱氏无胆甾原体B、关节炎支原体、肺支原体和肺炎支原体的提取物具有脱氧核糖核酸酶（DNase）和核酸内切酶活性。莱氏无胆甾原体B在蔗糖梯度中具有至少两个脱氧核糖核酸酶活性峰，沉降系数分别为3.1S和4.3S。这些组分还具有底物特异性不同的核酸内切酶活性。莱氏无胆甾原体B在蔗糖梯度中可能有两个以上的核酸内切酶活性峰。
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