Electron transfer flavoprotein subunit beta (ETFB)

Heterodimeric electron transfer flavoprotein that accepts electrons from several mitochondrial dehydrogenases, including acyl-CoA dehydrogenases, glutaryl-CoA and sarcosine dehydrogenase (PubMed:25416781, PubMed:15159392, PubMed:15975918). It transfers the electrons to the key mitochondrial respiratory chain through ETF-ubiquinone oxidoreductase (Probable).

Required for normal mitochondrial fatty acid oxidation and normal amino acid metabolism (PubMed:12815589, PubMed:7912128). ETFB binds an AMP molecule that likely has a purely structural role (PubMed:8962055, PubMed:15159392, PubMed:15975918).