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“Background: Recent studies in animal models have shown that high methionine intakes induce atherosclerotic changes that may be exacerbated when deficiencies of vitamins B6 , B12 and folate are present.”
Annals of Nutrition and Metabolism • 2009 | View Paper
“Depending on specific property of the mutant enzyme molecule some patients respond to very high doses of pyridoxine with decreases of methionine and homocystine and some not.”
International journal for vitamin and nutrition research. Internationale Zeitschrift fur Vitamin- und Ernahrungsforschung. Journal international de vitaminologie et de nutrition • 1984 | View Paper
“B6 in the methylation of nicotinamide is shown by the increased urinary excretion of N1-methylnicotinamide by human subjects, when given methionine plus pyridoxine but not when given only methionine.”
“Results showed MTH, dimethyl disulfide, and dimethyl trisulfide production when Met and PLP were incubated together at 7 degrees C (cheese-aging temperature).”
“Covalent binding of L-methionine as an external aldimine to the pyridoxal 5'-phosphate-cofactor in the K41A mutant of O-acetylserine sulfhydrylase from Salmonella typhimurium induces a large conformational change in the protein.”