Answer:
The pyruvate dehydrogenase complex (PDC) is a mitochondrial multienzyme complex composed of three different enzymes: pyruvate dehydrogenase or E1 (EC 1.2. 4.1); dihydrolipoyl transacetylase or dihydrolipoamide acetyltransferase or E2 (EC 2.3.
Explanation:
the outer membrane has small organic molecules but the inner membrane is less permeable and studded with transport proteins.
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