Bibliografisk träff 1991-10-01 The major pterin in Tetrahymena pyriformis is 6-(D-threo-1,2,3-trihydroxypropyl)-pterin (D-monapterin) and not 6-(L-threo-1,2-dihydroxypropyl)-pterin (ciliapterin). Klein R, Tatischeff I, Tham G, Grolière CA. Biochimie · journal article · DOI 10.1016/0300-9084(91)90089-j