Removal of PCR Error Products and Unincorporated Primers by Metal-Chelate Affinity Chromatography
dc.contributor.author | Kanakaraj, Indhu | |
dc.contributor.author | Jewell, David L. | |
dc.contributor.author | Murphy, Jason C. | |
dc.contributor.author | Fox, George E. | |
dc.contributor.author | Willson, Richard C. | |
dc.date.accessioned | 2020-03-11T17:16:32Z | |
dc.date.available | 2020-03-11T17:16:32Z | |
dc.date.issued | 2011-1 | |
dc.description.abstract | Immobilized Metal Affinity Chromatography (IMAC) has been used for decades to purify proteins on the basis of amino acid content, especially surface-exposed histidines and 揾istidine tags� genetically added to recombinant proteins. We and others have extended the use of IMAC to purification of nucleic acids via interactions with the nucleotide bases, especially purines, of single-stranded RNA and DNA. We also have demonstrated the purification of plasmid DNA from contaminating genomic DNA by IMAC capture of selectively-denatured genomic DNA. Here we describe an efficient method of purifying PCR products by specifically removing error products, excess primers, and unincorporated dNTPs from PCR product mixtures using flow-through metal-chelate affinity adsorption. By flowing a PCR product mixture through a Cu2+-iminodiacetic acid (IDA) agarose spin column, 94�% of the dNTPs and nearly all the primers can be removed. Many of the error products commonly formed by Taq polymerase also are removed. Sequencing of the IMAC-processed PCR product gave base-calling accuracy comparable to that obtained with a commercial PCR product purification method. The results show that IMAC matrices (specifically Cu2+-IDA agarose) can be used for the purification of PCR products. Due to the generality of the base-specific mechanism of adsorption, IMAC matrices may also be used in the purification of oligonucleotides, cDNA, mRNA and micro RNAs. | |
dc.identifier.citation | Copyright 2012 PLoS ONE. Recommended citation: Kanakaraj, Indhu, David L. Jewell, Jason C. Murphy, George E. Fox, and Richard C. Willson. "Removal of PCR error products and unincorporated primers by metal-chelate affinity chromatography." PloS one 6, no. 1 (2011): e14512. DOI:10.1371/journal.pone.0014512. URL: https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0014512. Reproduced in accordance with the original publisher's licensing terms and with permission from the authors. | |
dc.identifier.uri | https://hdl.handle.net/10657/6221 | |
dc.language.iso | en_US | |
dc.publisher | PLoS ONE | |
dc.subject | polymerase chain reaction | |
dc.subject | DNA purification | |
dc.subject | Elution | |
dc.subject | Imidazole | |
dc.subject | Nucleotide sequencing | |
dc.subject | sequence alignment | |
dc.subject | olgonucleotides | |
dc.subject | histidine | |
dc.title | Removal of PCR Error Products and Unincorporated Primers by Metal-Chelate Affinity Chromatography | |
dc.type | Article |