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Cleaved amplified polymorphic sequence

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This is an old revision of this page, as edited by Dmb000006 (talk | contribs) at 10:44, 27 August 2008 (Some more details added wrt. RFLP. I don't know how to stub this article...). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

The Cleaved Amplified Polymorphic Sequence or CAPS method is a technique in molecular biology for the analysis of genetic markers. It is an extension to the Restriction Length Fragment Polymorphism (RFLP) method, using PCR to more quickly analyse the results.

Like RLFP, CAPS work on the principle that genetic differences between individuals can create or abolish restriction endonuclease restriction sites, and that these differences can be detected in the resulting DNA fragment length after digestion.

In the CAPS method, PCR amplification is directed across the altered restriction site, and the products digested with the restriction enzyme. When fractionated by agarose or acrylamide gel electrophoresis, the digested PCR products will give readily distinguishable patterns of bands. Alternatively, the amplified segment can by analyzed by Allele specific oligonucleotide (ASO) probes, a process that can often be done by a simple Dot blot.

See also

http://www.ncbi.nlm.nih.gov/projects/genome/probe/doc/TechCAPS.shtml

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