ARF1(ADP-核糖基化因子1)属于ARF基因家族,该家族共有6个成员(ARF1-6),主要参与细胞内囊泡运输和膜动态调控。ARF家族蛋白均为小GTP酶,通过GTP/GDP结合状态切换来调节功能,在细胞内膜运输、信号传导和细胞骨架重组中发挥核心作用。ARF1作为最典型的成员,主要定位于高尔基体,负责COPI包被小泡的形成,调控蛋白质从高尔基体向内质网的逆向运输以及高尔基体内部运输。其表达产物是一种约20kDa的蛋白质,通过激活磷脂酶D和招募包被蛋白来调控囊泡形成。ARF1功能受GEF(鸟苷酸交换因子)和GAP(GTP酶激活蛋白)严格调控,突变可能破坏这种平衡,如ARF1 T31N突变体(GDP锁定型)会抑制囊泡运输,导致高尔基体结构紊乱;而Q71L突变体(GTP锁定型)则引起高尔基体异常扩张。ARF1异常与多种疾病相关,过表达可能促进肿瘤细胞增殖和转移(如乳腺癌、肝癌),因其能激活PI3K/AKT通路并增强基质金属蛋白酶分泌;表达降低则导致神经退行性疾病(如阿尔茨海默病),与APP蛋白运输障碍和β淀粉样蛋白积累有关。此外,ARF1还通过调控EGFR内吞影响信号传导,并与沙门氏菌等病原体感染过程密切相关。在基因互作方面,ARF1过表达会激活RAB5等内吞相关基因,同时抑制SEC31等COPII组分;低表达则导致ARFGAP1等调节因子代偿性上调。该基因在进化上高度保守,从酵母到人类均有同源基因,体现了其在分泌通路中的基础性作用。
ADP-ribosylation factor 1 (ARF1) is a member of the human ARF gene family. The family members encode small guanine nucleotide-binding proteins that stimulate the ADP-ribosyltransferase activity of cholera toxin and play a role in vesicular trafficking as activators of phospholipase D. The gene products, including 6 ARF proteins and 11 ARF-like proteins, constitute a family of the RAS superfamily. The ARF proteins are categorized as class I (ARF1, ARF2 and ARF3), class II (ARF4 and ARF5) and class III (ARF6), and members of each class share a common gene organization. The ARF1 protein is localized to the Golgi apparatus and has a central role in intra-Golgi transport. Multiple alternatively spliced transcript variants encoding the same protein have been found for this gene. [provided by RefSeq, Jul 2008]
ADP-核糖基化因子1(ARF1)是人ARF基因家族的一个成员。家族成员编码刺激霍乱毒素的ADP-核糖基转移酶活性,发挥作为磷脂酶D的活化剂的基因产物在囊泡运输作用小鸟嘌呤核苷酸结合蛋白,其中包括6 ARF蛋白和11 ARF样蛋白,构成了家庭RAS超家族。东盟地区论坛蛋白质被归类为I类(ARF1,ARF2和ARF3),II级(ARF4和ARF5)和III(ARF6)类,每一类都有一个共同的基因组织成员。所述ARF1蛋白定位于高尔基体和具有内高尔基体运输中心作用。已发现了该基因编码的蛋白质相同的多个可变剪接转录变异体。 [由RefSeq的,2008年7月提供]
ARF1基因(以及对应的蛋白质)的细胞分布位置:
ARF1基因的本体(GO)信息:
| 名称 |
|---|
| 4144 Endocytosis [PATH:hsa04144] |
| 5110 Vibrio cholerae infection [PATH:hsa05110] |
| 5134 Legionellosis [PATH:hsa05134] |
| 名称 |
|---|
| Adaptive Immune System |
| Clathrin derived vesicle budding |
| COPI Mediated Transport |
| Disease |
| Golgi Associated Vesicle Biogenesis |
| Golgi to ER Retrograde Transport |
| HIV Infection |
| Host Interactions of HIV factors |
| Immune System |
| Infectious disease |
| Lysosome Vesicle Biogenesis |
| Membrane Trafficking |
| Metabolism |
| Metabolism of lipids and lipoproteins |
| MHC class II antigen presentation |
| Nef Mediated CD4 Down-regulation |
| Nef-mediates down modulation of cell surface receptors by recruiting them to clathrin adapters |
| Phospholipid metabolism |
| PI Metabolism |
| Synthesis of PIPs at the Golgi membrane |
| The role of Nef in HIV-1 replication and disease pathogenesis |
| trans-Golgi Network Vesicle Budding |
| Vesicle-mediated transport |
| 疾病名称 | 关系值 | NofPmids | NofSnps | 来源 |
| Mammary Neoplasms | 0.00272435 | 1 | 0 | LHGDN |
| Occupational Diseases | 0.002367032 | 1 | 0 | GAD |
| Alzheimer's Disease | 0.002367032 | 1 | 0 | GAD |
| Malignant neoplasm of breast | 0.000542884 | 2 | 0 | BeFree |
| Invasive breast carcinoma | 0.000542884 | 2 | 0 | BeFree |
| Breast Carcinoma | 0.000542884 | 2 | 0 | BeFree |
| Neoplasm Metastasis | 0.000271442 | 1 | 0 | BeFree |
| Pregnancy Complications | 0.000271442 | 1 | 0 | BeFree |
| HIV Infections | 0.000271442 | 1 | 0 | BeFree |
| Secondary malignant neoplasm of lymph node | 0.000271442 | 1 | 0 | BeFree |
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