RAD1(也称为REC1或RAD1A)是DNA损伤修复和细胞周期检查点调控中的一个关键基因,属于RAD基因家族(特别是RAD1/RAD9/RAD17检查点复合体家族)。该基因编码的蛋白质与RAD9和HUS1形成三聚体复合物(称为9-1-1复合物),在DNA损伤响应中起核心作用。RAD1蛋白的主要功能是参与细胞对DNA损伤的感知和信号传导,尤其在复制应激或双链断裂时,它能招募ATR激酶等修复因子到损伤位点,激活检查点通路以阻滞细胞周期,为修复争取时间。该基因的作用位点集中在细胞核内,尤其在DNA损伤位点附近。若RAD1发生功能丧失性突变,会导致检查点功能缺陷,细胞无法正确响应DNA损伤,可能引发基因组不稳定、凋亡抵抗或肿瘤发生。研究表明,RAD1突变与多种癌症(如乳腺癌、卵巢癌)及遗传性疾病(如范可尼贫血)相关。当RAD1过表达时,可能过度激活检查点通路导致细胞周期停滞甚至衰老,而表达降低则会使细胞对DNA损伤敏感,增加突变积累风险。RAD基因家族的共性在于它们均参与维持基因组稳定性,多数成员在DNA损伤修复、同源重组或跨损伤合成中发挥作用。该家族成员通常形成多蛋白复合物(如RAD51在重组修复中的作用),且突变常导致对辐射或化疗药物的超敏反应。
This gene encodes a component of a heterotrimeric cell cycle checkpoint complex, known as the 9-1-1 complex, that is activated to stop cell cycle progression in response to DNA damage or incomplete DNA replication. The 9-1-1 complex is recruited by RAD17 to affected sites where it may attract specialized DNA polymerases and other DNA repair effectors. Alternatively spliced transcript variants of this gene have been described. [provided by RefSeq, Jan 2009]
Subcellular localization of RAD1 (and its protein):
Gene Ontology (GO) terms for RAD1:
| Interacting Gene | Interaction | Source/Score |
| Name |
|---|
| Activation of ATR in response to replication stress |
| Cell Cycle |
| Cell Cycle Checkpoints |
| G2/M Checkpoints |
| Disease | Score | NofPmids | NofSnps | Source |
| Malignant neoplasm of breast | 0.002367032 | 1 | 0 | GAD |
| Narcolepsy | 0.002367032 | 1 | 0 | GAD |
| Chronic Lymphocytic Leukemia | 0.002367032 | 1 | 0 | GAD |
| Malignant lymphoma, lymphocytic, intermediate differentiation, diffuse | 0.001085767 | 4 | 0 | BeFree |
| Diabetes | 0.000542884 | 2 | 0 | BeFree |
| Diabetes Mellitus, Non-Insulin-Dependent | 0.000542884 | 2 | 0 | BeFree |
| Diabetes Mellitus | 0.000542884 | 2 | 0 | BeFree |
| Xeroderma pigmentosum, group F | 0.000271442 | 1 | 0 | BeFree |
| Influenza | 0.000271442 | 1 | 0 | BeFree |
| Lymphoma | 0.000271442 | 1 | 0 | BeFree |
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