ID   1.3.1.111
DE   Geranylgeranyl-bacteriochlorophyllide a reductase.
CA   Bacteriochlorophyll a + 3 NADP(+) =
CA   geranylgeranyl bacteriochlorophyllide a + 3 NADPH.
CC   -!- The enzyme catalyzes the successive reduction of the geranylgeraniol
CC       esterifying group to phytol, reducing three out of four double bonds,
CC       and transforming geranylgeranyl bacteriochlorophyllide a via
CC       dihydrogeranylgeranyl bacteriochlorophyllide a and
CC       tetrahydrogeranylgeranyl bacteriochlorophyllide a to
CC       bacteriochlorophyll a.
CC   -!- The enzyme can also accept the pheophytin derivative geranylgeranyl
CC       bacteriopheophytin, converting it to bacteriopheophytin a.
//