A new class of genome rare cutters - PubMed (original) (raw)

A new class of genome rare cutters

A G Veselkov et al. Nucleic Acids Res. 1996.

Abstract

Although significant efforts have been directed at developing efficient techniques for rare and super rare genome cutting, only limited success has been achieved. Here we propose a new approach to solve this problem. We demonstrate that peptide nucleic acid 'clamps' (bis-PNAs) bind strongly and sequence specifically to short homopyrimidine sites on lambda and yeast genomic DNAs. Such binding efficiently shields methylation/restriction sites which overlap with the bis-PNA binding sites from enzymatic methylation. After removing the bis-PNA, the genomic DNAs are quantitatively cleaved by restriction enzymes into a limited number of pieces of lengths from several hundred kbp to several Mbp. By combining various bis-PNAs with different methylation/restriction enzyme pairs, a huge new class of genome rare cutters can be created. These cutters cover the range of recognition specificities where very few, if any, cutters are now available.

PubMed Disclaimer

Similar articles

Cited by

References

    1. Science. 1991 Dec 6;254(5037):1497-500 - PubMed
    1. Science. 1991 Dec 6;254(5037):1494-7 - PubMed
    1. Nucleic Acids Res. 1992 Nov 11;20(21):5831-6 - PubMed
    1. Methods Enzymol. 1992;216:199-224 - PubMed
    1. Methods Enzymol. 1992;216:321-9 - PubMed

Publication types

MeSH terms

Substances

LinkOut - more resources