Functional modeling of vitamin responsiveness in yeast: a common pyridoxine-responsive cystathionine β-synthase mutation in homocystinuria - Kim, CE; Gallagher, PM; Guttormsen, AB; Refsum, H; Ueland, PM; Ose, L; Folling, I; Whitehead, AS; Tsai, MY; Kruger, WD (Hum Mol Genet, 1997)