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- Title
Consensus-degenerate hybrid oligonucleotide primers for amplification of distantly related sequences.
- Authors
Rose, T M; Schultz, E R; Henikoff, J G; Pietrokovski, S; McCallum, C M; Henikoff, S
- Abstract
We describe a new primer design strategy for PCR amplification of unknown targets that are related to multiply-aligned protein sequences. Each primer consists of a short 3' degenerate core region and a longer 5' consensus clamp region. Only 3-4 highly conserved amino acid residues are necessary for design of the core, which is stabilized by the clamp during annealing to template molecules. During later rounds of amplification, the non-degenerate clamp permits stable annealing to product molecules. We demonstrate the practical utility of this hybrid primer method by detection of diverse reverse transcriptase-like genes in a human genome, and by detection of C5DNA methyltransferase homologs in various plant DNAs. In each case, amplified products were sufficiently pure to be cloned without gel fractionation. This COnsensus-DEgenerate Hybrid Oligonucleotide Primer (CODEHOP) strategy has been implemented as a computer program that is accessible over the World Wide Web (http://blocks.fhcrc.org/codehop.html) and is directly linked from the BlockMaker multiple sequence alignment site for hybrid primer prediction beginning with a set of related protein sequences.
- Publication
Nucleic acids research, 1998, Vol 26, Issue 7, p1628
- ISSN
0305-1048
- Publication type
Journal Article
- DOI
10.1093/nar/26.7.1628