NAIP(神经元凋亡抑制蛋白)属于IAP(凋亡抑制蛋白)基因家族,该家族成员通常含有BIR(杆状病毒IAP重复)结构域,能够抑制细胞凋亡。NAIP主要在神经系统中表达,其编码的蛋白质通过抑制caspase-3和caspase-7的活性来阻止细胞凋亡,从而保护神经元免受损伤。此外,NAIP还参与先天免疫反应,通过识别细菌鞭毛蛋白和其他病原体相关分子模式来激活炎症小体,进而促进IL-1β等促炎细胞因子的释放。NAIP的突变与多种疾病相关,例如脊髓性肌萎缩症(SMA),某些突变会导致NAIP功能丧失,增加运动神经元的凋亡,进而引发疾病。NAIP的过表达可能增强细胞对凋亡的抵抗,但也可能导致炎症反应过度激活,与某些自身免疫性疾病或慢性炎症相关。相反,NAIP表达降低可能使细胞更容易发生凋亡,增加神经退行性疾病的风险。在基因家族中,IAP成员通常共享BIR结构域,但NAIP还具有NOD样受体(NLR)结构域,使其在免疫调控中具有独特作用。NAIP的功能多样性使其在神经保护和免疫防御中扮演重要角色,其异常表达或突变可能对机体产生广泛影响。
This gene is part of a 500 kb inverted duplication on chromosome 5q13. This duplicated region contains at least four genes and repetitive elements which make it prone to rearrangements and deletions. The repetitiveness and complexity of the sequence have also caused difficulty in determining the organization of this genomic region. This copy of the gene is full length; additional copies with truncations and internal deletions are also present in this region of chromosome 5q13. It is thought that this gene is a modifier of spinal muscular atrophy caused by mutations in a neighboring gene, SMN1. The protein encoded by this gene contains regions of homology to two baculovirus inhibitor of apoptosis proteins, and it is able to suppress apoptosis induced by various signals. Alternatively spliced transcript variants encoding distinct isoforms have been found for this gene. [provided by RefSeq, Jul 2008]
这个基因倒在5q13染色体复制一个500 KB的一部分。这种重复区域包含至少四个基因和重复元件,这使得它易于重排和缺失。序列的重复性和复杂性也确定该基因组区域的组织造成的困难。该基因的这个副本全长;以截断和内部缺失额外的副本也存在于5q13染色体的这个区域。据认为,这种基因是在邻近的基因,SMN1突变引起的脊髓性肌萎缩的改性剂。由该基因编码的蛋白质中包含同源的区域,以抑制细胞凋亡蛋白两种杆状病毒,并且还能够抑制细胞凋亡的各种信号诱导。已发现该基因编码不同亚型选择性剪接转录变异体。 [由RefSeq的,2008年7月提供]
NAIP基因(以及对应的蛋白质)的细胞分布位置:
NAIP基因的本体(GO)信息:
| 名称 |
|---|
| 4621 NOD-like receptor signaling pathway [PATH:hsa04621] |
| 5134 Legionellosis [PATH:hsa05134] |
| 疾病名称 | 关系值 | NofPmids | NofSnps | 来源 |
| HMN (Hereditary Motor Neuropathy) Proximal Type I | 0.120814326 | 3 | 0 | BeFree_ORPHANET |
| Muscular Atrophy, Spinal, Type II | 0.12 | 0 | 0 | ORPHANET |
| Juvenile Spinal Muscular Atrophy | 0.12 | 0 | 0 | ORPHANET |
| Brain Ischemia | 0.08 | 1 | 0 | RGD |
| Spinal Muscular Atrophy | 0.033732194 | 68 | 0 | BeFree_GAD_LHGDN |
| Spinal Muscular Atrophies of Childhood | 0.005091382 | 2 | 0 | GAD_LHGDN |
| Muscular Atrophy | 0.002995792 | 2 | 0 | BeFree_LHGDN |
| Fabry Disease | 0.002995792 | 1 | 0 | BeFree_LHGDN |
| Mammary Neoplasms | 0.00272435 | 1 | 0 | LHGDN |
| Multiple Sclerosis | 0.00272435 | 1 | 0 | LHGDN |
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