The enzyme that converts oxaloacetate into malic acid is
Option: 1
Malic dehydrogenase
Option: 2
Oxalophosphatase
Option: 3
Malic phosphatase
Option: 4
carboxylase
Answers (1)
CAM Pathway -
CAM (Crassulacean Acid Metabolism) plants are found in xerophytic conditions.
CAM pathway is exhibited by Crassulaceae, Euphorbiaceae, Cactaceae etc.
Their stomata open only during the night, fixing carbon onto different compounds and then releasing the fixed carbon into the C3 cycle during the day when plants perform photosynthesis.
The CO2 taken up by succulent plants at night is fixed in a similar way as it takes place in C4 plants to form malic acid, which is being stored in the vacuole.
These acids are decarboxylated and the CO2 released is fixed to produce PGA.
Malic dehydrogenase converts oxaloacetate into malic acid. Hence, the correct answer is option a.