A native polyacrylamide gel electrophoresis
(PAGE) was carried out according to Laemmli
(1970). The native PAGE for leaf and flower
proteins was conducted on a 12.5%
separating and 4% stacking gel. A Tris base
and glycine solution (pH 8.0) was used as
running buffer. An equal amount of proteins
were mixed properly with 10% sucrose and a
0.1% (w/v) solution of bromophenol blue was
added to the gel slab wells.