Catalyzes the desaturation of both long- and medium-chain acyl-CoAs to 2-trans-enoyl-CoAs. Most active with C14-CoA. Activity on long-chain mono-unsaturated substrates is 40% higher than with the corresponding saturated substrates. Seems to be an important factor in the general metabolism of root tips. May be involved in the biosynthesis of jasmonic acid.
Score = 82.0 bits (201), Expect = 1e-15, Method: Composition-based stats.
Identities = 36/59 (61%), Positives = 47/59 (79%)
Query: 1 VRPNAIALVDAFNYTDHYLGSVLGRYDGNVYPKLYEEAWKDPLNDSVVPDGYHEYIRPL 59
+RPNA+ALVDAF++ D LGSVLGRYDGNVY L+E A K PLN + V + YH++++PL
Sbjct: 599 IRPNAVALVDAFDFKDMTLGSVLGRYDGNVYENLFEWAKKSPLNKTEVHESYHKHLKPL 657
Catalyzes the desaturation of acyl-CoAs to 2-trans-enoyl-CoAs. Isoform 1 shows highest activity against medium-chain fatty acyl-CoAs and activity decreases with increasing chain length. Isoform 2 is active against a much broader range of substrates and shows activity towards very long-chain acyl-CoAs.
Score = 78.2 bits (191), Expect = 2e-14, Method: Composition-based stats.
Identities = 35/58 (60%), Positives = 46/58 (79%)
Query: 2 RPNAIALVDAFNYTDHYLGSVLGRYDGNVYPKLYEEAWKDPLNDSVVPDGYHEYIRPL 59
RPNA+ALVDAF++ D LGSVLGRYDGNVY L+E A K PLN + V + Y+++++PL
Sbjct: 600 RPNAVALVDAFDFKDVTLGSVLGRYDGNVYENLFEWAKKSPLNKTEVHESYYKHLKPL 657
Catalyzes the desaturation of acyl-CoAs to 2-trans-enoyl-CoAs. Isoform 1 shows highest activity against medium-chain fatty acyl-CoAs and activity decreases with increasing chain length. Isoform 2 is active against a much broader range of substrates and shows activity towards very long-chain acyl-CoAs.
Score = 75.5 bits (184), Expect = 8e-14, Method: Composition-based stats.
Identities = 33/59 (55%), Positives = 45/59 (76%)
Query: 1 VRPNAIALVDAFNYTDHYLGSVLGRYDGNVYPKLYEEAWKDPLNDSVVPDGYHEYIRPL 59
+RP + ALVDAF++ D LGSVLGRYDGN+Y ++E A K PLN S V + YH++++PL
Sbjct: 599 IRPESAALVDAFDFQDVSLGSVLGRYDGNIYENMFEWAKKSPLNKSEVHESYHKHLKPL 657
Catalyzes the desaturation of acyl-CoAs to 2-trans-enoyl-CoAs. Isoform 1 shows highest activity against medium-chain fatty acyl-CoAs and activity decreases with increasing chain length. Isoform 2 is active against a much broader range of substrates and shows activity towards very long-chain acyl-CoAs.
Score = 60.0 bits (146), Expect = 2e-12
Identities = 24/40 (60%), Positives = 31/40 (77%)
Query: 1 VRPNAIALVDAFNYTDHYLGSVLGRYDGNVYPKLYEEAWK 40
+RP+A+ALVDAF+ D L S +GRYDG+VY L+EEA K
Sbjct: 571 LRPDAVALVDAFDLPDFVLNSPIGRYDGDVYENLFEEARK 610
Peroxisomal acyl-CoA oxidases (AXO) catalyze the first set in the peroxisomal fatty acid beta-oxidation, the alpha,beta dehydrogenation of the corresponding trans-enoyl-CoA by FAD, which becomes reduced. In a second oxidative half-reaction, the reduced FAD is reoxidized by molecular oxygen. AXO is generally a homodimer, but it has been reported to form a different type of oligomer in yeast. There are several subtypes of AXO's, based on substrate specificity. Palmitoyl-CoA oxidase acts on straight-chain fatty acids and prostanoids; whereas, the closely related Trihydroxycoprostanoly-CoA oxidase has the greatest activity for 2-methyl branched side chains of bile precursors. Pristanoyl-CoA oxidase, acts on 2-methyl branched fatty acids. AXO has an additional domain, C-terminal to the region with similarity to acyl-CoA dehydrogenases, which is included in this alignment. Length = 610
It catalyses the first and rate-determining step of the peroxisomal beta-oxidation of fatty acids []. Acyl-CoA oxidase is a homodimer and the polypeptide chain of the subunit is folded into the N-terminal alpha-domain, beta-domain, and C-terminal alpha-domain []. Functional differences between the peroxisomal acyl-CoA oxidases and the mitochondrial acyl-CoA dehydrogenases are attributed to structural differences in the FAD environments []. Experimental data indicate that, in the pumpkin, the expression pattern of ACOX is very similar to that of the glyoxysomal enzyme 3-ketoacyl-CoA thiolase []. In humans, defects in ACOX1 are the cause of pseudoneonatal adrenoleukodystrophy, also known as peroxisomal acyl-CoA oxidase deficiency. Pseudo-NALD is a peroxisomal single-enzyme disorder. Clinical features include mental retardation, leukodystrophy, seizures, mild hepatomegaly and hearing deficit. Pseudo-NALD is characterised by increased plasma levels of very-long chain fatty acids due to a decrease in, or absence of, peroxisome acyl-CoA oxidase activity, despite the peroxisomes being intact and functioning. This entry represents the Acyl-CoA oxidase C-terminal.; GO: 0003997 acyl-CoA oxidase activity, 0006635 fatty acid beta-oxidation, 0055114 oxidation-reduction process, 0005777 peroxisome; PDB: 2FON_A 1IS2_B 2DDH_A 1W07_B.
Peroxisomal acyl-CoA oxidases (AXO) catalyze the first set in the peroxisomal fatty acid beta-oxidation, the alpha,beta dehydrogenation of the corresponding trans-enoyl-CoA by FAD, which becomes reduced. In a second oxidative half-reaction, the reduced FAD is reoxidized by molecular oxygen. AXO is generally a homodimer, but it has been reported to form a different type of oligomer in yeast. There are several subtypes of AXO's, based on substrate specificity. Palmitoyl-CoA oxidase acts on straight-chain fatty acids and prostanoids; whereas, the closely related Trihydroxycoprostanoly-CoA oxidase has the greatest activity for 2-methyl branched side chains of bile precursors. Pristanoyl-CoA oxidase, acts on 2-methyl branched fatty acids. AXO has an additional domain, C-terminal to the region with similarity to acyl-CoA dehydrogenases, which is included in this alignment.
