... were obtained from Fluka (Buchs, Switzerland), CoomassieÒ brilliant blue R250 was obtained from Serva (Heidelberg, Germany), and < /b> disodium tetraborate decahydrate was obtained from Merck (Darmstadt, ... NADPH:< /b> protochlorophyllide < /b> oxidoreductases A < /b> and < /b> B: a < /b> branched pathway for light-dependent chlorophyll biosynthesis in Arabidopsis thaliana Plant Physiol 108, 1505–1517 Oosawa N, Masuda T, Awai K, Fusada N, Shimada H, ... the < /b> plastid stroma after import and < /b> before the < /b> protein is assembled into an enzymatically active form As a < /b> number of < /b> groups have found that accumulation of < /b> PORA in the < /b> plastid stroma is a < /b> substrate-independent...