Abstract
The determination of nucleotide sequence is fundamental to the identification and molecular analysis of genes. Direct sequencing of PCR products is now becoming a commonplace procedure for haplotype analysis, and for defining mutations and polymorphism within genes, particularly for diagnostic purposes. A previously unrecognised phenomenon, primer related variability, observed in sequence data generated using Taq cycle sequencing and T7 Sequenase sequencing, is reported. This suggests that caution is necessary when interpreting DNA sequence data. This is particularly important in situations where treatment may be dependent on the accuracy of the molecular diagnosis.
Keywords: novel primer specific terminations
Keywords: DNA sequencing
Keywords: molecular diagnostics
Full text
PDF
Images in this article
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Biggin M. D., Gibson T. J., Hong G. F. Buffer gradient gels and 35S label as an aid to rapid DNA sequence determination. Proc Natl Acad Sci U S A. 1983 Jul;80(13):3963–3965. doi: 10.1073/pnas.80.13.3963. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Grundmann U., Amann E., Zettlmeissl G., Küpper H. A. Characterization of cDNA coding for human factor XIIIa. Proc Natl Acad Sci U S A. 1986 Nov;83(21):8024–8028. doi: 10.1073/pnas.83.21.8024. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Ichinose A., Davie E. W. Characterization of the gene for the a subunit of human factor XIII (plasma transglutaminase), a blood coagulation factor. Proc Natl Acad Sci U S A. 1988 Aug;85(16):5829–5833. doi: 10.1073/pnas.85.16.5829. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Madsen K. M., Hasholt L., Berger J., Sørensen S. A. SSCP analysis of paraffin wax embedded tissues in a family with an atypical form of Fabry disease. Clin Mol Pathol. 1996 Oct;49(5):M310–M312. doi: 10.1136/mp.49.5.m310. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Sanger F., Nicklen S., Coulson A. R. DNA sequencing with chain-terminating inhibitors. Proc Natl Acad Sci U S A. 1977 Dec;74(12):5463–5467. doi: 10.1073/pnas.74.12.5463. [DOI] [PMC free article] [PubMed] [Google Scholar]