ACOX1(酰基辅酶A氧化酶1,Acyl-CoA Oxidase 1)是一种参与过氧化物酶体β-氧化的关键酶,主要催化长链脂肪酸(LCFAs)和支链脂肪酸的初始氧化反应,生成过氧化氢和烯酰辅酶A。其表达产物为一种含黄素腺嘌呤二核苷酸(FAD)的氧化酶,在肝脏、肾脏等代谢活跃组织中高表达。ACOX1的功能缺陷会导致过氧化物酶体脂肪酸氧化障碍,引发血液中极长链脂肪酸(VLCFAs)积累,与肾上腺脑白质营养不良(X-ALD)和齐薇格谱系障碍(Zellweger spectrum disorders)等遗传病相关。该基因突变可能导致酶活性丧失或降低,进而影响能量代谢和脂质稳态,临床表现为神经退行性变、肝功能障碍及肾上腺功能不全。ACOX1属于酰基辅酶A氧化酶基因家族(ACOX family),该家族成员均参与脂肪酸氧化,但底物特异性不同,如ACOX2优先降解支链脂肪酸,而ACOX3功能尚不明确。ACOX1过表达可能增加活性氧(ROS)产生,导致氧化应激和细胞损伤;而表达降低则会引起VLCFAs代谢受阻,诱发炎症反应和器官功能障碍。此外,ACOX1与PPARα(过氧化物酶体增殖物激活受体α)通路相互作用,其表达受PPARα调控,在禁食或高脂饮食时被诱导,参与能量适应。研究还发现ACOX1在肝癌中可能异常表达,提示其与肿瘤代谢重编程相关。
The protein encoded by this gene is the first enzyme of the fatty acid beta-oxidation pathway, which catalyzes the desaturation of acyl-CoAs to 2-trans-enoyl-CoAs. It donates electrons directly to molecular oxygen, thereby producing hydrogen peroxide. Defects in this gene result in pseudoneonatal adrenoleukodystrophy, a disease that is characterized by accumulation of very long chain fatty acids. Alternatively spliced transcript variants encoding different isoforms have been identified. [provided by RefSeq, Jul 2008]
由该基因编码的蛋白质是脂肪酸β-氧化途径,其催化酰基辅酶A的去饱和2-反式烯酰基辅酶A的第一种酶。它直接将电子提供给分子氧,从而产生过氧化氢。缺陷在该基因导致pseudoneonatal肾上腺脑白质营养不良,即结合了非常长链脂肪酸积累的疾病。编码不同同种型的可变剪接转录物变体也已确定。 [由RefSeq的,2008年7月提供]
ACOX1基因(以及对应的蛋白质)的细胞分布位置:
ACOX1基因的本体(GO)信息:
名称 |
---|
1212 Fatty acid metabolism [PATH:hsa01212] |
71 Fatty acid degradation [PATH:hsa00071] |
592 alpha-Linolenic acid metabolism [PATH:hsa00592] |
1040 Biosynthesis of unsaturated fatty acids [PATH:hsa01040] |
4024 cAMP signaling pathway [PATH:hsa04024] |
4146 Peroxisome [PATH:hsa04146] |
3320 PPAR signaling pathway [PATH:hsa03320] |
名称 |
---|
alpha-linolenic (omega3) and linoleic (omega6) acid metabolism |
alpha-linolenic acid (ALA) metabolism |
Beta-oxidation of very long chain fatty acids |
Fatty acid, triacylglycerol, and ketone body metabolism |
Metabolism |
Metabolism of lipids and lipoproteins |
Peroxisomal lipid metabolism |
PPARA activates gene expression |
Regulation of lipid metabolism by Peroxisome proliferator-activated receptor alpha (PPARalpha) |
疾病名称 | 关系值 | NofPmids | NofSnps | 来源 |
Peroxisomal ACYL-COA oxidase deficiency | 0.560542884 | 3 | 7 | BeFree_CLINVAR_CTD_human_MGD_ORPHANET_UNIPROT |
Liver carcinoma | 0.120814326 | 4 | 0 | BeFree_CTD_human |
Diabetes Mellitus, Experimental | 0.12 | 1 | 0 | CTD_human |
Acyl-CoA oxidase deficiency | 0.12 | 0 | 0 | ORPHANET |
Steatohepatitis | 0.000814326 | 3 | 0 | BeFree |
Hepatocarcinogenesis | 0.000542884 | 2 | 0 | BeFree |
Deficiency of oxidase | 0.000271442 | 1 | 0 | BeFree |
Neurodegenerative Disorders | 0.000271442 | 1 | 0 | BeFree |
RHIZOMELIC CHONDRODYSPLASIA PUNCTATA, TYPE 1 | 0.000271442 | 1 | 0 | BeFree |
Fatty Liver | 0.000271442 | 1 | 0 | BeFree |
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