We have identified transcripts of two lipoxygenase (LOXs) from 3-day-germin
ated etiolated cotyledons. One encodes a soluble and the other encodes a pl
astid LOX. They are 2520 bp and 2676 bp in size, respectively. Antibodies r
aised against the C-terminal 500 amino acids of the plastid LOX recognize a
90 kDa LOX in 5-day-old etiolated and green cotyledons. In mature leaves a
LOX of 95 kDa is detected. LOX activity and protein was mainly located in
the cytosol.