2-methyl-3-oxobutanoyl-CoA

1. acetyl-CoA:propanoyl-CoA 2-C-acetyltransferase

Catalysed by HADHA, ACAA2, HADHBmitochondrial matrix

1. propanoyl-CoA + acetyl-CoA = 2-methyl-3-oxobutanoyl-CoA + CoA

Catalysed by ACAT1

1. acetyl-CoA:propanoyl-CoA 2-C-acetyltransferase
2. Active Transport

Catalysed by HADHA, ACAA2, HADHBmitochondrial matrix, cytosolOne of 2 routes

1. acetyl-CoA:propanoyl-CoA 2-C-acetyltransferase
2. Propanoyl-CoA hydrolase

Catalysed by HADHA, ACAA2, HADHB, ACOT7mitochondrial matrix, cytosolOne of 13 routes

1. acetyl-CoA:propanoyl-CoA 2-C-acetyltransferase
2. Propanoyl-CoA hydrolase
3. transport of 2-hydroxybutyrate and propanoate (cytosol to extracellular)

Catalysed by HADHA, ACAA2, HADHB, ACOT7 and 4 moremitochondrial matrix, cytosol, extracellular spaceOne of 2 routes

1. acetyl-CoA:propanoyl-CoA 2-C-acetyltransferase
2. Active Transport
3. carnitine O-palmitoyltransferase ((9E)-tetradecenoyl-CoA)