Electron transfer flavoprotein subunit beta

Definition:

Heterodimeric electron transfer flavoprotein that accepts electrons from several mitochondrial dehydrogenases, including acyl-CoA dehydrogenases, glutaryl-CoA and sarcosine dehydrogenase. It transfers the electrons to the main mitochondrial respiratory chain via ETF-ubiquinone oxidoreductase (Probable). Required for normal mitochondrial fatty acid oxidation and normal amino acid metabolism. ETFB binds an AMP molecule that probably has a purely structural role.

References:

[1]. Helen S Toogood, et al. Dynamics driving function: new insights from electron transferring flavoproteins and partner complexes. FEBS J. 2007 Nov;274(21):5481-504. [Content Brief]

[2]. D L Roberts, et al. Three-dimensional structure of human electron transfer flavoprotein to 2.1-A resolution. Proc Natl Acad Sci U S A. 1996 Dec 10;93(25):14355-60. [Content Brief]

[3]. Rikke K J Olsen, et al. Clear relationship between ETF/ETFDH genotype and phenotype in patients with multiple acyl-CoA dehydrogenation deficiency. Hum Mutat. 2003 Jul;22(1):12-23. [Content Brief]

[4]. Helen S Toogood, et al. Stabilization of non-productive conformations underpins rapid electron transfer to electron-transferring flavoprotein. J Biol Chem. 2005 Aug 26;280(34):30361-6. [Content Brief]

[5]. Helen S Toogood, et al. Extensive domain motion and electron transfer in the human electron transferring flavoprotein.medium chain Acyl-CoA dehydrogenase complex. J Biol Chem. 2004 Jul 30;279(31):32904-12. [Content Brief]

[6]. I Colombo, et al. Mutations and polymorphisms of the gene encoding the beta-subunit of the electron transfer flavoprotein in three patients with glutaric acidemia type II. Hum Mol Genet. 1994 Mar;3(3):429-35. [Content Brief]

[7]. Jędrzej Małecki, et al. Human METTL20 is a mitochondrial lysine methyltransferase that targets the β subunit of electron transfer flavoprotein (ETFβ) and modulates its activity. J Biol Chem. 2015 Jan 2;290(1):423-34. [Content Brief]

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