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. 1978 Jan;5(1):37–56. doi: 10.1093/nar/5.1.37

Sequence analysis of 5'[32P] labeled mRNA and tRNA using polyacrylamide gel electrophoresis.

R E Lockard, B Alzner-Deweerd, J E Heckman, J MacGee, M W Tabor, U L RajBhandary
PMCID: PMC341960  PMID: 25417

Abstract

Sequence analysis of 5'-[32P] labeled tRNA and eukaryotic mRNA using an adaptation of a method recently described by Donis-Keller, Maxam and Gilbert for mapping guanines, adenines and pyrimidines from the 5'-end of an RNA is described. In addition, a technique utilizing two-dimensional polyacrylamide gel electrophoresis for identification of pyrimidines within a sequence is described. 5'-[32P] Labeled rabbit beta-globin mRNA and N. crassa mitochondrial initiator tRNA were partially digested with T1- RNase for cleavage at G residues, with U2-RNase for cleavage at A residues, with an extracellular RNase from B. cereus for cleavage at pyrimidine residues and with T2-RNase or with alkali for cleavage at all four residues. The 5'-[32P] labeled partial digestion products were separated according to their size, by electrophoresis in adjacent lanes of a polyacrylamide slab gel and the location of G's, A's and of pyrimidines extending 60-80 nucleotides from the 5'-end of the RNA determined. Two-dimensional polyacrylamide gel electrophoresis was used to separate the 5'-[32P] labeled fragments present in partial alkali digests of a 5'-[32P] labeled mRNA. The mobility shifts corresponding to the difference of a C residue were distinct from those corresponding to a U residue and this formed the basis of a method for distinguishing between the pyrimidines.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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