The XmnI restriction-modification system: cloning, expression, sequence organization and similarity between the R and M genes.

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ID: 70906
1996
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Abstract
The xmnIRM genes from Xanthomonas manihotis 7AS1 have been cloned and expressed in Escherichia coli. The nucleotide (nt) sequences of both genes were determined. The XmnI methyltransferase (MTase)-encoding gene is 1861 bp in length and codes for 620 amino acids (aa) (68660 Da). The restriction endonuclease (ENase)-encoding gene is 959 bp long and therefore codes for a 319-aa protein (35275 Da). The two genes are aligned tail to tail and they overlap at their respective stop codons About 4 x 10(4) units/g wet cell paste of R.XmnI was obtained following IPTG induction in a suitable E. coli host. The xmnIR gene is expressed from the T7 promoter. M.XmnI probably modifies the first A in the sequence, GAA(N)4TTC. The xmnIR and M genes contain regions of conserved similarity and probably evolved from a common ancestor. M.XmnI is loosely related to M.EcoRI. The XmnI R-M system and the type-I R-M systems probably derived from a common ancestor.
Reference Key
nwankwo1996thegene Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Nwankwo, D O;Lynch, J J;Moran, L S;Fomenkov, A;Slatko, B E;
Journal Gene
Year 1996
DOI
DOI not found
URL URL not found
Keywords
brazilian population hb e-saskatoon keywords ancestry β-globin haplotype

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