Peptide-tags for enhanced DNA microarray performance
| Autor: | Ilenia Ciani, Till T. Bachmann, Anthony J. Walton, Mizanur Khondoker, Jonathan G. Terry, Alan J. Ross, Jason Crain, Peter Ghazal, Gerard Giraud, Colin Campbell, Holger Schulze, Julie Luby, Andrew R. Mount, Stuart W. J. Ember, Davide Papale, Chaker Tlili |
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| Rok vydání: | 2011 |
| Předmět: |
chemistry.chemical_classification
Oligonucleotide Hybridization probe Nucleic Acid Hybridization Peptide Hepacivirus Hepatitis C Chronic Molecular biology Combinatorial chemistry Amino acid chemistry.chemical_compound Nucleic acid thermodynamics chemistry Protein microarray Aromatic amino acids Humans Histidine Physical and Theoretical Chemistry DNA microarray Oligonucleotide Probes Oligopeptides Oligonucleotide Array Sequence Analysis |
| Zdroj: | Schulze, H, Ross, A J, Ember, S W J, Luby, J, Khondoker, M, Giraud, G, Ciani, I, Tlili, C, Papale, D, Terry, J G, Mount, A R, Walton, A J, Crain, J, Ghazal, P, Bachmann, T T & Campbell, C J 2011, ' Peptide-tags for enhanced DNA microarray performance ', Faraday Discussions, vol. 149, pp. 201-210 . https://doi.org/10.1039/c005491g |
| ISSN: | 1364-5498 1359-6640 |
| DOI: | 10.1039/c005491g |
| Popis: | DNA microarrays are powerful tools for gene expression analysis and genotyping studies in research and diagnostic applications. A high sensitivity and short time-to-result are prerequisites for their practical application in the clinic. The hybridization efficiency of DNA microarrays depends on the probe density and the probe orientation and thus their accessibility for target molecules. In order to find an optimal probe immobilization procedure a set of different oligonucleotide modifications was tested on epoxy silane functionalized glass slides. It was found that histidine-tagged oligonucleotides resulted in the highest amount of bound probe and by far the best hybridization efficiencies. The detection limit obtained with histidine-tagged probes was up to two orders of magnitude lower compared to commonly used probe modifications. In order to further investigate the binding mechanism of histidine-tags towards functionalized glass substrates a set of different peptide-tags with and without free terminal amino-groups and with different amino acid compositions was tested. The results indicate an impact of the terminal amino group on the covalent surface binding and of aromatic amino acid residues on the enhanced hybridisation efficiency. |
| Databáze: | OpenAIRE |
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