<unk>  (O−OC-CH2-CH(OH)-COO−) is the ionized form of malic acid. It is an important chemical compound in biochemistry. In the C4 carbon fixation process,<unk>  is a source of CO2 in the Calvin cycle.
In the citric acid cycle, (S)-malate is an intermediate formed by the addition of an -OH group on the si face of fumarate; it can also be formed from pyruvate via anaplerotic reactions.<unk>  dehydrogenase catalyzes the reversible conversion of<unk>  into oxaloacetate using NAD as a cofactor.<unk>  is also produced from starch in guard cells of plant leaves.  A build up of<unk>  leads to a low water potential. Water then flows into the guard cells causing the stoma to open. However, this process does not always induce the opening of stomas.
Malate
Meglutol
Malic acid
Oxamyl
Choline
Aminohippurate
Saline 
Acetaldehyde