Efficient adaptational demethylation of chemoreceptors requires the same enzyme-docking site as efficient methylation.
Barnakov AN, Barnakova LA, Hazelbauer GL, Proc Natl Acad Sci U S A, 1999 Sep 14 - link

Enhanced function conferred on low-abundance chemoreceptor Trg by a methyltransferase-docking site.
Feng X, Lilly AA, Hazelbauer GL, J Bacteriol, 1999 May - link