Fig. 1From: Rapidly progressive psychotic symptoms triggered by infection in a patient with methylenetetrahydrofolate reductase deficiency: a case reportAn overview of methionine and homocysteine metabolism. MTHFR, Methylenetetrahydrofolate reductase; CBS, cystathionine beta-synthase; BHMT, betaine-homocysteine S-methyltransferaseBack to article page