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What is mitochondrial matrix?
Mitochondrial matrix is the inner space of mitochondria surrounded by intima and crista, which contains a lot of protein and lipids. Enzymes that catalyze the oxidation of fatty acids and pyruvate in the tricarboxylic acid cycle also exist in the matrix. In addition, it also contains mitochondrial DNA, mitochondrial ribosome, tRNAs, rRNAs and various enzymes expressed by mitochondrial genes.