FUNCTION: Catalyzes the NADPH-dependent reduction of trans-2-enoyl thioesters in mitochondrial fatty acid synthesis (fatty acid synthesis type II). Fatty acid chain elongation in mitochondria uses acyl carrier protein (ACP) as an acyl group carrier, but the enzyme accepts both ACP and CoA thioesters...
FUNCTION: Catalyzes the NADPH-dependent reduction of trans-2-enoyl thioesters in mitochondrial fatty acid synthesis (fatty acid synthesis type II). Fatty acid chain elongation in mitochondria uses acyl carrier protein (ACP) as an acyl group carrier, but the enzyme accepts both ACP and CoA thioesters as substrates in vitro. Displays a preference for medium-chain over short- and long-chain substrates (PubMed:18479707, PubMed:12654921, PubMed:27817865). May provide the octanoyl chain used for lipoic acid biosynthesis, regulating protein lipoylation and mitochondrial respiratory activity particularly in Purkinje cells (By similarity). {ECO:0000250|UniProtKB:Q9DCS3, ECO:0000269|PubMed:12654921, ECO:0000269|PubMed:18479707, ECO:0000269|PubMed:27817865}.
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GO - Biological processes (BP):
fatty acid biosynthetic process [GO:0006633]; fatty acid metabolic process [GO:0006631]...
fatty acid biosynthetic process [GO:0006633]; fatty acid metabolic process [GO:0006631]
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GO - Molecular function (MF):
trans-2-enoyl-CoA reductase (NADPH) activity [GO:0019166]...
trans-2-enoyl-CoA reductase (NADPH) activity [GO:0019166]
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GO - Cellular component (CC):
mitochondrial matrix [GO:0005759]; mitochondrion [GO:0005739]; nucleus [GO:0005634]...
mitochondrial matrix [GO:0005759]; mitochondrion [GO:0005739]; nucleus [GO:0005634]
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