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Table 1 MTases presenting a statistical significant association with isolates of distinct geographic origin (Chi-square test).

From: Geographic distribution of methyltransferases of Helicobacter pylori: evidence of human host population isolation and migration

MTase Recognition sequence * Chi-square higher smaller Std.
   (p value) expression in isolates from Residual
M. AseI ATTAAT 0.031 -- Africa 2.13
M. FokI GGATG 0.001 America
Asia
-- 2.77
2.55
M. MspI CCGG 0.036 -- --  
M. Hpy188I TCNGA 0.002 America -- 2.05
M. Hpy99I CGWCG 0.025 America -- 2.29
M. HpyCH4III CANGT <0.001 Africa
America
-- -1.99
-2.21
M. DraI TTTAAA <0.001 Asia -- 5.36
M. BstUI CGCG 0.006 Asia -- 2.81
M. FauI CCCGC 0.004 Asia -- -2.04
M. TaqI TCGA 0.044 -- --  
  1. * data from REBASE [23].