1977
DOI: 10.1093/nar/4.1.71
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Isolation of specific messenger RNA by adsorption of polysomes to matrix-bound antibody

Abstract: A procedure is presented for the purification of specific mRNAs, which exploits the ability of antibodies prepared against a native protein to bind to the nascent polypeptide on the polysome. Rather than precipitating these soluble antibody-polysome complexes with anti-antibody, which can lead to nonspecific trapping of polysomes, we have linked the anti-antibody to an insoluble matrix. Thus, the antibody-polysome complex binds to the anti-antibody support and nonspecific polysomes can easily be removed by sev… Show more

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Cited by 57 publications
(39 citation statements)
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References 26 publications
(17 reference statements)
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“…The contaminant sequences are overemphasized in this autoradiogram since the probe was labeled to such a high specific activity and since exposure of the main band is well beyond the linear range of the film. The trypsin inhibitor probe hybridized intensely to a 770-nucleotide region (lane 4 (10,27). While the principle is the same, the elution ofA20 above the EDTA background was easily detected from the GARSepharose columns and the problem of fines generates by alkalitreated cellulose was avoided.…”
Section: Resultsmentioning
confidence: 99%
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“…The contaminant sequences are overemphasized in this autoradiogram since the probe was labeled to such a high specific activity and since exposure of the main band is well beyond the linear range of the film. The trypsin inhibitor probe hybridized intensely to a 770-nucleotide region (lane 4 (10,27). While the principle is the same, the elution ofA20 above the EDTA background was easily detected from the GARSepharose columns and the problem of fines generates by alkalitreated cellulose was avoided.…”
Section: Resultsmentioning
confidence: 99%
“…More recently, an immunoadsorption procedure utilizing anti-antibody coupled to p-aminobenzyl-cellulose has been used to adsorb antibody-tagged specific polysomes. After batch-washing of the matrix, the bound polysomes were dissociated with buffer containing 20 mm EDTA (27). In adapting this procedure, I have found that Sepharose is an appropriate support for the anti-antibody (in this case goat anti-rabbit) and that application of polysomes, washings, and elution can be conveniently performed in a manner analogous to standard column techniques for antigen-antibody purification by affinity chromatography.…”
Section: Resultsmentioning
confidence: 99%
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“…Details of the procedures for the polyacrylamide gel electrophoresis in 98 % formamide and for the poly(A) determination by hybridization with [3H]poly(U) have been published [22,25]. Methods for the isolation of total poly(A)-containing mRNA from chicken oviduct and the procedure for the isolation of pure ovalbumin mRNA by adsorption of polysomes to matrix-bound antibodies have been described earlier [24,26].…”
Section: General Methodsmentioning
confidence: 99%
“…Several laboratories have developed polysome immunoadsorption procedures (4,8,9,17,19,24) for isolation oflow abundance mRNAs. These procedures exploit the ability of antibodies, prepared against the native protein of the mRNA to be purified, to bind to the nascent polypeptide chains on the polysomes.…”
mentioning
confidence: 99%