Effect of Single Mismatches at 3′–end of Primers on Polymerase Chain Reaction

Objective and Method – To investigate the effect of three different mismatches (G/T, G/A or G/G) at the 3•– end of a primer to amplify a 268 bp (base pair) region of the human •–globin gene using different annealing temperatures (45 to 65•C). Results – The primer with the G/T mismatch was as efficie...

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Main Authors: Simsek M, Adnan H
Format: Article
Language:English
Published: Sultan Qaboos University 2000-01-01
Series:Sultan Qaboos University Medical Journal
Subjects:
Online Access:https://journals.squ.edu.om/index.php/squmj/article/view/1188
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author Simsek M
Adnan H
author_facet Simsek M
Adnan H
author_sort Simsek M
collection DOAJ
description Objective and Method – To investigate the effect of three different mismatches (G/T, G/A or G/G) at the 3•– end of a primer to amplify a 268 bp (base pair) region of the human •–globin gene using different annealing temperatures (45 to 65•C). Results – The primer with the G/T mismatch was as efficient as the normal primer (G/C match) in the amplification of a 268 bp product at all temperatures tested. However, the primers having G/A or G/G mismatches at the 3'- end did not produce any specific polymerase chain reaction (PCR) fragment at all the annealing temperatures used, except a barely detectable 268 bp product for the G/G mismatch at 45 and 50•C. Conclusion – We conclude that our PCR system was refractory to amplification when one of the primers contained a G/A or G/G mismatch at the 3•–end with template DNA.
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spelling doaj.art-1cf0e0f9273c4739bd6e106e97d8cc1f2022-12-22T02:14:47ZengSultan Qaboos UniversitySultan Qaboos University Medical Journal2075-051X2075-05282000-01-012111141117Effect of Single Mismatches at 3′–end of Primers on Polymerase Chain ReactionSimsek M0Adnan H1Department of Biochemistry, Sultan Qaboos University, P.O.Box: 35, Postal Code: 123, Muscat, Sultanate of OmanDepartment of Biochemistry, Sultan Qaboos University, P.O.Box: 35, Postal Code: 123, Muscat, Sultanate of OmanObjective and Method – To investigate the effect of three different mismatches (G/T, G/A or G/G) at the 3•– end of a primer to amplify a 268 bp (base pair) region of the human •–globin gene using different annealing temperatures (45 to 65•C). Results – The primer with the G/T mismatch was as efficient as the normal primer (G/C match) in the amplification of a 268 bp product at all temperatures tested. However, the primers having G/A or G/G mismatches at the 3'- end did not produce any specific polymerase chain reaction (PCR) fragment at all the annealing temperatures used, except a barely detectable 268 bp product for the G/G mismatch at 45 and 50•C. Conclusion – We conclude that our PCR system was refractory to amplification when one of the primers contained a G/A or G/G mismatch at the 3•–end with template DNA.https://journals.squ.edu.om/index.php/squmj/article/view/1188pcr, mismatched primers, β−globin gene
spellingShingle Simsek M
Adnan H
Effect of Single Mismatches at 3′–end of Primers on Polymerase Chain Reaction
Sultan Qaboos University Medical Journal
pcr, mismatched primers, β−globin gene
title Effect of Single Mismatches at 3′–end of Primers on Polymerase Chain Reaction
title_full Effect of Single Mismatches at 3′–end of Primers on Polymerase Chain Reaction
title_fullStr Effect of Single Mismatches at 3′–end of Primers on Polymerase Chain Reaction
title_full_unstemmed Effect of Single Mismatches at 3′–end of Primers on Polymerase Chain Reaction
title_short Effect of Single Mismatches at 3′–end of Primers on Polymerase Chain Reaction
title_sort effect of single mismatches at 3 end of primers on polymerase chain reaction
topic pcr, mismatched primers, β−globin gene
url https://journals.squ.edu.om/index.php/squmj/article/view/1188
work_keys_str_mv AT simsekm effectofsinglemismatchesat3endofprimersonpolymerasechainreaction
AT adnanh effectofsinglemismatchesat3endofprimersonpolymerasechainreaction