ID 2.1.1.161 DE dimethylglycine N-methyltransferase. AN DMT. CA N,N-dimethylglycine + S-adenosyl-L-methionine = glycine betaine + H(+) + CA S-adenosyl-L-homocysteine. CC -!- This enzyme, from the marine cyanobacterium Synechococcus sp. strain CC WH8102, differs from EC 2.1.1.157 in that it cannot use sarcosine as CC an alternative substrate. CC -!- Betaine is a 'compatible solute' that enables cyanobacteria to cope CC with osmotic stress by maintaining a positive cellular turgor. DR Q7U4Z9, SDMT_PARMW ; //