BCH 4024 OC 3426 SP26 E2 Q36: A 15‑year‑old sprinter reports…
BCH 4024 OC 3426 SP26 E2 Q36: A 15‑year‑old sprinter reports weakness after viral illness. Serum shows elevated malate, low oxaloacetate (OAA) in muscle extracts, and reduced citrate formation in isolated mitochondria. Citrate increases after OAA supplementation. Which enzyme deficiency most directly produces this pattern?