Misra T K, Rhee S, Apirion D
J Biol Chem. 1976 Dec 10;251(23):7669-74.
A new ribonuclease called RNase N was isolated from Escherichia coli. It is a nonspecific endoribonuclease that can cleave rRNA, poly(U), and poly(C) to small oligonucleotides and 5'-mononucleotides. It requires monovalent cations and is inhibited by divalent cations. It is suggested that this enzyme plays a role in the decay of rRNA,under various starvation conditions and perhaps in the decay of mRNA.
一种名为核糖核酸酶N(RNase N)的新型核糖核酸酶从大肠杆菌中分离出来。它是一种非特异性内切核糖核酸酶,能够将核糖体RNA(rRNA)、聚尿苷酸(poly(U))和聚胞苷酸(poly(C))切割成小的寡核苷酸和5'-单核苷酸。它需要单价阳离子,并且会被二价阳离子抑制。有人认为这种酶在各种饥饿条件下rRNA的降解过程中发挥作用,也许还参与信使RNA(mRNA)的降解。