Final answer:
Malate synthase is abundantly found in the mitochondrial matrix of complex eukaryotic cells, where it is involved in the Krebs Cycle for ATP production.
Step-by-step explanation:
You would expect to find abundant levels of malate synthase in the mitochondrial matrix of complex eukaryotes. Malate synthase is an enzyme that participates in the citric acid (Kreb's) cycle, which occurs within the mitochondria. The mitochondria are essential organelles, often referred to as the powerhouses of the cell, where adenosine triphosphate (ATP), the cell's main energy-carrying molecule, is produced through cellular respiration. The Krebs Cycle is a part of this process, taking place in the mitochondrial matrix, and malate synthase plays a key role in this cycle.
The TCA cycle (tricarboxylic acid cycle), also known as the Krebs Cycle, has been shown to be enhanced in some cells under certain conditions, such as aluminum-treated tomato radicles, indicating that enzymes related to the cycle, including malate dehydrogenases, are induced. This suggests that the presence of malate synthase would also be elevated in mitochondria under such conditions. Furthermore, mitochondria have their own DNA and ribosomes, thus are capable of synthesizing proteins like malate synthase independently of the cytoplasm.