ARRB1(β-arrestin 1)属于arrestin基因家族,该家族还包括ARRB2(β-arrestin 2)、视觉arrestin(SAG)和cone arrestin(ARR3)。arrestin家族蛋白的共同特点是能够与激活的G蛋白偶联受体(GPCR)结合,介导受体内化和信号脱敏,从而调控GPCR信号通路的强度和持续时间。ARRB1在多种组织中广泛表达,尤其在脑、心脏和免疫系统中发挥重要作用。它不仅参与GPCR信号调控,还作为支架蛋白介导非GPCR信号通路(如MAPK、AKT等),影响细胞增殖、迁移和凋亡等过程。ARRB1的主要作用位点包括细胞膜、内体和细胞核,通过与不同蛋白相互作用参与多种生物学功能。ARRB1突变可能导致GPCR信号失调,与多种疾病相关,如癌症(乳腺癌、肺癌等)、心血管疾病(心力衰竭、高血压)和神经系统疾病(帕金森病、精神分裂症)。ARRB1过表达可能增强受体脱敏并抑制GPCR信号,导致某些信号通路(如β肾上腺素受体通路)功能减弱,影响心脏功能或代谢调节;同时可能通过激活非GPCR通路(如Wnt/β-catenin)促进肿瘤发生。ARRB1表达降低则可能导致GPCR信号过度激活,与炎症反应增强、过敏性疾病和某些癌症进展相关。ARRB1还参与免疫调节,其表达变化可能影响T细胞功能和自身免疫疾病发展。在基因家族中,ARRB1和ARRB2功能高度相似但存在组织分布和底物偏好差异,例如ARRB1更倾向于与某些趋化因子受体结合。
Members of arrestin/beta-arrestin protein family are thought to participate in agonist-mediated desensitization of G-protein-coupled receptors and cause specific dampening of cellular responses to stimuli such as hormones, neurotransmitters, or sensory signals. Arrestin beta 1 is a cytosolic protein and acts as a cofactor in the beta-adrenergic receptor kinase (BARK) mediated desensitization of beta-adrenergic receptors. Besides the central nervous system, it is expressed at high levels in peripheral blood leukocytes, and thus the BARK/beta-arrestin system is believed to play a major role in regulating receptor-mediated immune functions. Alternatively spliced transcripts encoding different isoforms of arrestin beta 1 have been described. [provided by RefSeq, Jan 2011]
休止/β-类休止蛋白家族的成员被认为参与G蛋白偶联受体的激动剂介导的脱敏而导致的细胞应答特异性衰减到刺激如激素,神经递质,或感觉信号。休止Beta 1的是一个胞浆蛋白和充当β-肾上腺能受体的β-肾上腺素能受体激酶(树皮)介导的脱敏的辅助因子。除了中枢神经系统,这是在高的水平在外周血白细胞中表达,并且因此树皮/β-类休止系统被认为在调节受体介导的免疫功能的重要作用。编码休止测试1的不同同种型的可变剪接转录物已有描述。 [由RefSeq的,2011年1月提供]
ARRB1基因(以及对应的蛋白质)的细胞分布位置:
ARRB1基因的本体(GO)信息:
| 名称 |
|---|
| 4010 MAPK signaling pathway [PATH:hsa04010] |
| 4144 Endocytosis [PATH:hsa04144] |
| 4062 Chemokine signaling pathway [PATH:hsa04062] |
| 4744 Phototransduction [PATH:hsa04744] |
| 5032 Morphine addiction [PATH:hsa05032] |
| 名称 |
|---|
| Activated NOTCH1 Transmits Signal to the Nucleus |
| Activation of SMO |
| Clathrin derived vesicle budding |
| Golgi Associated Vesicle Biogenesis |
| Hedgehog 'on' state |
| Hemostasis |
| Lysosome Vesicle Biogenesis |
| Membrane Trafficking |
| Platelet activation, signaling and aggregation |
| Signal Transduction |
| Signaling by Hedgehog |
| Signaling by NOTCH |
| Signaling by NOTCH1 |
| Thrombin signalling through proteinase activated receptors (PARs) |
| trans-Golgi Network Vesicle Budding |
| Vesicle-mediated transport |
| 疾病名称 | 关系值 | NofPmids | NofSnps | 来源 |
| Arthritis, Experimental | 0.080271442 | 2 | 0 | BeFree_RGD |
| Heart failure | 0.080271442 | 2 | 0 | BeFree_RGD |
| Colitis | 0.08 | 1 | 0 | RGD |
| Arteriovenous fistula | 0.08 | 1 | 0 | RGD |
| Nicotine Dependence | 0.002638474 | 1 | 0 | BeFree_GAD |
| Tobacco Use Disorder | 0.002367032 | 1 | 0 | GAD |
| Neoplasm Metastasis | 0.000814326 | 3 | 0 | BeFree |
| Ovarian Carcinoma | 0.000814326 | 3 | 0 | BeFree |
| Malignant neoplasm of ovary | 0.000814326 | 3 | 0 | BeFree |
| Non-Small Cell Lung Carcinoma | 0.000814326 | 3 | 0 | BeFree |
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