Skip to main content
Nucleic Acids Research logoLink to Nucleic Acids Research
. 1986 Feb 11;14(3):1293–1301. doi: 10.1093/nar/14.3.1293

Identification and characterisation of PmaCI an endonuclease of novel specificity from Pseudomonas maltophila.

J N Walker, P D Dean, J R Saunders
PMCID: PMC339504  PMID: 3005970

Abstract

We report the use of MonoQ FPLC (Fast Protein Liquid Chromatography) for the rapid purification of a novel Type II restriction endonuclease PmaCI, from Pseudomonas maltophila, which recognises the sequence 5'-CAC decreases GTG-3'. The resulting enzyme is free of other nucleases to a level suitable for its characterisation by multiple-substrate digestion and DNA sequencing techniques. This method appears to be widely applicable and we have used it for the isolation of restriction endonucleases of comparable purity from a range of other organisms. Also described is a rapid method for screening a library of small inserted regions in recombinant M13 molecules for the presence and subsequent screening of restriction sites of interest.

Full text

PDF
1297

Images in this article

Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Brown N. L., Smith M. A general method for defining restriction enzyme cleavage and recognition sites. Methods Enzymol. 1980;65(1):391–404. doi: 10.1016/s0076-6879(80)65050-2. [DOI] [PubMed] [Google Scholar]
  2. Mount D. W., Conrad B. Microcomputer programs for graphic analysis of nucleic acid and protein sequences. Nucleic Acids Res. 1984 Jan 11;12(1 Pt 2):811–817. doi: 10.1093/nar/12.1part2.811. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. O'Connor C. D., Metcalf E., Wrighton C. J., Harris T. J., Saunders J. R. RsrII--a novel restriction endonuclease with a heptanucleotide recognition site. Nucleic Acids Res. 1984 Sep 11;12(17):6701–6708. doi: 10.1093/nar/12.17.6701. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Roberts R. J. Restriction and modification enzymes and their recognition sequences. Nucleic Acids Res. 1985;13 (Suppl):r165–r200. doi: 10.1093/nar/13.suppl.r165. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. 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]
  6. Smith H. O., Nathans D. Letter: A suggested nomenclature for bacterial host modification and restriction systems and their enzymes. J Mol Biol. 1973 Dec 15;81(3):419–423. doi: 10.1016/0022-2836(73)90152-6. [DOI] [PubMed] [Google Scholar]
  7. Smith H. O., Wilcox K. W. A restriction enzyme from Hemophilus influenzae. I. Purification and general properties. J Mol Biol. 1970 Jul 28;51(2):379–391. doi: 10.1016/0022-2836(70)90149-x. [DOI] [PubMed] [Google Scholar]

Articles from Nucleic Acids Research are provided here courtesy of Oxford University Press

RESOURCES