Cloning and functional characterization of ACAD-9, a novel member of human acyl-CoA dehydrogenase family

Zhang, Jia; Zhang, Weiping; Zou, Dajin; Chen, Guoyou; Wan, Tao; Zhang, Minghui; Cao, Xuetao

doi:10.1016/s0006-291x(02)02336-7

Cited by 81 publications

(82 citation statements)

References 25 publications

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“…Substrate specificity is the most important characteristic to define the members of the ACADS family. Studies have shown that SCAD, ACADSB and IBD can all utilize butyrylCoA as a substrate, whereas IVD, ACADSB and IBD are most active with short/branched chain acyl-CoAs as a substrate (Zhang et al, 2002;He et al, 2003). ACADSB encodes for a mitochondrial precursor protein with a molec- ular weight of 47.1 kDa, which has the active activity toward the short/branched chained acyl-CoA derivative (Rozen et al, 1994;Alfardan et al, 2010).…”

Section: Discussionmentioning

confidence: 99%

The effect of short/branched chain acyl-coenzyme A dehydrogenase gene on triglyceride synthesis of bovine mammary epithelial cells

et al. 2018

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Abstract. Short/branched chain acyl-CoA dehydrogenase (ACADSB) is a member of the acyl-CoA dehydrogenase family of enzymes that catalyze the dehydrogenation of acyl-CoA derivatives in the metabolism of fatty acids. Our previous transcriptome analysis in dairy cattle showed that ACADSB was differentially expressed and was associated with milk fat metabolism. The aim of this study was to elucidate the background of this differential expression and to evaluate the role of ACADSB as a candidate for fat metabolism in dairy cattle. After analysis of ACADSB mRNA abundance by qRT-PCR and Western blot, overexpression and RNA interference (RNAi) vectors of ACADSB gene were constructed and then transfected into bovine mammary epithelial cells (bMECs) to examine the effects of ACADSB on milk fat synthesis. The results showed that the ACADSB was differentially expressed in mammary tissue of low and high milk fat dairy cattle. Overexpression of ACADSB gene could significantly increase the level of intracellular triglyceride (TG), while ACADSB gene knockdown could significantly reduce the TG synthesis in bMECs. This study suggested that the ACADSB was important in TG synthesis in bMECs, and it could be a candidate gene to regulate the metabolism of milk fat in dairy cattle.

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Section: Discussionmentioning

confidence: 99%

The effect of short/branched chain acyl-coenzyme A dehydrogenase gene on triglyceride synthesis of bovine mammary epithelial cells

et al. 2018

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“…There are nine members of this family, five of which are involved in the mitochondrial fatty-acid -oxidation process: short-chain, medium-chain, long-chain and verylong-chain acyl-CoA dehydrogenases (SCAD, MCAD, LCAD and VLCAD-1, respectively) and the recently reported very-long-chain acyl-CoA dehydrogenase ACAD-9 (VLCAD-2) (Zhang et al, 2002;Ensenauer et al, 2005;Kim & Miura, 2004). The other four members are involved in the amino-acid oxidation pathway and comprise iso(3)valeryl-CoA dehydrogenase (I3VD) for leucine, iso(2)valerylCoA dehydrogenase (I2VD) for isoleucine, isobutyryl-CoA dehydrogenase (IBD) for valine and glutaryl-CoA dehydrogenase (GD) for lysine and tryptophan (Kim & Miura, 2004).…”

Section: Introductionmentioning

confidence: 99%

Purification, crystallization and preliminary crystallographic analysis of very-long-chain acyl-CoA dehydrogenase fromCaenorhabditis elegans

Zhai

Fang

et al. 2010

Acta Cryst Sect F

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Acyl-CoA dehydrogenase [acyl-CoA:(acceptor) 2,3-oxidoreductase; EC 1.3.99.3] catalyzes the first reaction step in mitochondrial fatty-acid -oxidation. Here, the very-long-chain acyl-CoA dehydrogenase from Caenorhabditis elegans (cVLCAD) has been cloned and overexpressed in Escherichia coli strain BL21 (DE3). Interestingly, unlike other very-long-chain acyl-CoA dehydrogenases, cVLCAD was found to form a tetramer by size-exclusion chromatography coupled with in-line static light-scattering, refractive-index and ultraviolet measurements. Purified cVLCAD (12 mg ml À1 ) was successfully crystallized by the hanging-drop vapour-diffusion method under conditions containing 100 mM Tris-HCl pH 8.0, 150 mM sodium chloride, 200 mM magnesium formate and 13% PEG 3350. The crystal has a tetragonal form and a complete diffraction data set was collected and processed to 1.8 Å resolution. The crystal belonged to space group C2, with unit-cell parameters a = 138.6, b = 116.7, c = 115.3 Å , = = 90.0, = 124.0 . A self-rotation function indicated the existence of one noncrystallographic twofold axis. A preliminary molecular-replacement solution further confirmed the presence of two molecules in one asymmetric unit, which yields a Matthews coefficient V M of 2.76 Å 3 Da À1 and a solvent content of 55%.

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confidence: 99%

“…Very long, long, medium, and short chain acyl-CoA dehydrogenases (VLCAD, LCAD, MCAD, and SCAD, respectively) catalyze the first step in the mitochondrial ␤-oxidation of fatty acids with substrate optima of 16,16,8, and 4 carbon chains, respectively (3, 14 -15). A new ACD has been identified recently (ACAD9) that is also active against long chain acyl-CoA substrates (16). Isovaleryl-CoA dehydrogenase (IVD), short/branched chain acyl-CoA dehydrogenase (SBCAD, also known as 2-methyl branched chain acyl-CoA dehydrogenase), and isobutyryl-CoA dehydrogenase (IBD) catalyze the third step in leucine, isoleucine, and valine metabolism, respectively (2-4, 11, 12, 17, 18), whereas glutaryl-CoA dehydrogenase is active in lysine metabolism (19).…”

mentioning

confidence: 99%

A Novel Approach to the Characterization of Substrate Specificity in Short/Branched Chain Acyl-CoA Dehydrogenase

Burghardt

Vockley

2003

Journal of Biological Chemistry

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Rat and human short/branched chain acyl-CoA dehydrogenases exhibit key differences in substrate specificity despite an overall amino acid identity of 85% between them. Rat short/branched chain acyl-CoA dehydrogenases (SBCAD) are more active toward substrates with longer carbon side chains than human SBCAD, whereas the human enzyme utilizes substrates with longer primary carbon chains. The mechanism underlying this difference in substrate specificity was investigated with a novel surface plasmon resonance assay combined with absorbance and circular dichroism spectroscopy, and kinetics analysis of wild type SBCADs and mutants with altered amino acid residues in the substrate binding pocket. Results show that a relatively few amino acid residues are critical for determining the difference in substrate specificity seen between the human and rat enzymes and that alteration of these residues influences different portions of the enzyme mechanism. Molecular modeling of the SBCAD structure suggests that position 104 at the bottom of the substrate binding pocket is important in determining the length of the primary carbon chain that can be accommodated. Conformational changes caused by alteration of residues at positions 105 and 177 directly affect the rate of electron transfer in the dehydrogenation reactions, and are likely transmitted from the bottom of the substrate binding pocket to ␤-sheet 3. Differences between the rat and human enzyme at positions 383, 222, and 220 alter substrate specificity without affecting substrate binding. Modeling predicts that these residues combine to determine the distance between the flavin ring of FAD and the catalytic base, without changing the opening of the substrate binding pocket.The acyl-CoA dehydrogenases (ACDs) 1 are a family of related enzymes that catalyze the ␣, ␤-dehydrogenation of acylCoA esters, transferring electrons to electron transferring flavoprotein (1-4). Deficiencies of these enzymes are important causes of human disease (3-7). Biochemical and immunological studies have identified at least 9 distinct members of this enzyme family, each having a characteristic substrate utilization pattern (8 -13). Very long, long, medium, and short chain acyl-CoA dehydrogenases (VLCAD, LCAD, MCAD, and SCAD, respectively) catalyze the first step in the mitochondrial ␤-oxidation of fatty acids with substrate optima of 16, 16, 8, and 4 carbon chains, respectively (3, 14 -15). A new ACD has been identified recently (ACAD9) that is also active against long chain acyl-CoA substrates (16). Isovaleryl-CoA dehydrogenase (IVD), short/branched chain acyl-CoA dehydrogenase (SBCAD, also known as 2-methyl branched chain acyl-CoA dehydrogenase), and isobutyryl-CoA dehydrogenase (IBD) catalyze the third step in leucine, isoleucine, and valine metabolism, respectively (2-4, 11, 12, 17, 18), whereas glutaryl-CoA dehydrogenase is active in lysine metabolism (19).We have shown previously that SCAD, SBCAD, and IBD can all utilize butyryl-CoA as substrate (albeit with different efficiencies), whereas ...

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Cloning and functional characterization of ACAD-9, a novel member of human acyl-CoA dehydrogenase family

Cited by 81 publications

References 25 publications

The effect of short/branched chain acyl-coenzyme A dehydrogenase gene on triglyceride synthesis of bovine mammary epithelial cells

The effect of short/branched chain acyl-coenzyme A dehydrogenase gene on triglyceride synthesis of bovine mammary epithelial cells

Purification, crystallization and preliminary crystallographic analysis of very-long-chain acyl-CoA dehydrogenase fromCaenorhabditis elegans

A Novel Approach to the Characterization of Substrate Specificity in Short/Branched Chain Acyl-CoA Dehydrogenase

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