FRAMESHIFT SUPPRESSION IN AMINOACYL-tRNA LIMITED CELLS | Zendy

Robert B. Weiss | Zendy; Jonathan Gallant | Zendy

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FRAMESHIFT SUPPRESSION IN AMINOACYL-tRNA LIMITED CELLS

Author(s) -

Robert B. Weiss,

Jonathan Gallant

Publication year - 1986

Publication title -

genetics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.792

H-Index - 246

eISSN - 1943-2631

pISSN - 0016-6731

DOI - 10.1093/genetics/112.4.727

Subject(s) - frameshift mutation , biology , genetics , ribosome , translational frameshift , transfer rna , genetic code , context (archaeology) , translation (biology) , stop codon , allele , reading frame , gene , open reading frame , mutation , messenger rna , rna , peptide sequence , paleontology

Under certain conditions aminoacyl-tRNA limitation can phenotypically suppress frameshift alleles. The observed suppression is due to an increase in abnormal translocation of ribosomes translating codons that have a short supply of aminoacyl-tRNA. The rIIB frameshift alleles of bacteriophage T4 are used here to pinpoint the sites of ribosome frameshifting caused by these hypothetical decoding errors. The data indicate that not all hungry codons are associated with abnormal translocation, only a relatively small subset. Analysis of the hungry codons which are associated with ribosome frameshifting points to the existence of severe context effects determining the shiftiness of these codons.

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