Monomercurated tRNA has been prepared by exhaustive treatment of mercaptoethanol on polymercurated tRNA under non-denaturing conditions. The remained mercury atom is stable toward ultraviolet (254 nm) irradiation up to absorption of 100 quanta/nucleotide, but could be easily removed by mercaptoethanol under denaturing conditions. Monomercurated tRNA quantitatively binds to thiopropyl-Sepharose and can be completely desorbed by mercaptoethanol-containing solutions. Monomercurated tRNA is similar to the starting tRNA preparation in efficiency and specificity of aminoacylation and in factor-dependent polypeptide synthesis in vitro.
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| http://dx.doi.org/10.1111/j.1432-1033.1983.tb07718.x | DOI Listing |
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