Reaction catalyzed by DELTA24(241)-sterol reductase (1.3.1.71)
+
NADP+
=
+
NADPH
+
ergosta-5,7,22-trien-3beta-ol
+
NADP+
=
ergosta-5,7,22,24(241)-tetraen-3beta-ol
+
NADPH
+
H+
