| 摘要 |
Disclosed are tRNA analogues which comprise a tRNA, such as tRNA<phe>; a nonstandard amino acid moiety which acts as an acceptor substrate, but not as a donor substrate, for ribosome-directed nonstandard polymer transfer and, thus, is stably linked to the acceptor stem of the tRNA; and a reactive or activatible moiety near or within the anticodon stem loop of the tRNA that can medidate the covalent coupling of the tRNA analogue to mRNA. Also disclosed are nonstandard polymer-tRNA analogue-mRNA fusions; libraries of encoded nonstandard polymers; methods of producing and screening the libraries; and target members and their uses.
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