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Factor EF-P is a nonribosomal (soluble) protein of Escherichia coli that stimulates peptide bond synthesis when certain aminoacyl-tRNA analogues are used. The purification of this protein to apparent homogeneity is described here. EF-P has a molecular weight of about 21 000, a Stokes radius of 27 A (1A = 0.1 nm), and a frictional coefficient of 1.48, suggesting an asymmetric structure. By this and a number of other criteria, EF-P is a new factor that controls peptide bond formation during protein biosynthesis. 相似文献
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John G. Fleagle 《American journal of physical anthropology》1986,70(2):278-279
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J. W. Froehlich 《American journal of physical anthropology》1985,66(1):103-104
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《Prostaglandins & other lipid mediators》1977,13(6):1009
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