RAD23B属于RAD23基因家族,该家族包括RAD23A和RAD23B两个成员,它们共同参与核苷酸切除修复(NER)途径,主要负责识别和修复DNA损伤,特别是紫外线引起的嘧啶二聚体等损伤。RAD23B基因编码的蛋白含有泛素相关结构域(UBA)和泛素样结构域(UBL),能够与蛋白酶体结合,参与泛素-蛋白酶体系统(UPS)的蛋白质降解过程。RAD23B的主要作用位点是细胞核,通过与XPC蛋白形成复合物来增强DNA损伤识别能力,从而启动NER修复机制。突变或功能缺失可能导致修复能力下降,增加对紫外线等DNA损伤因素的敏感性,与着色性干皮病(XP)等遗传性疾病相关。此外,RAD23B还参与调控细胞周期和凋亡,其异常表达可能影响基因组稳定性。过表达RAD23B可能增强DNA修复能力,但过度激活可能干扰正常细胞周期调控;而降低表达则会导致修复缺陷,增加突变积累和癌症风险。RAD23基因家族的共性在于它们均通过UBL和UBA结构域介导蛋白质相互作用,协调DNA修复与蛋白质降解,在维持基因组稳定性中发挥关键作用。研究表明,RAD23B还与神经退行性疾病(如帕金森病)相关,可能通过影响错误折叠蛋白的清除参与病理过程。
The protein encoded by this gene is one of two human homologs of Saccharomyces cerevisiae Rad23, a protein involved in the nucleotide excision repair (NER). This protein was found to be a component of the protein complex that specifically complements the NER defect of xeroderma pigmentosum group C (XP-c) cell extracts in vitro. This protein was also shown to interact with, and elevate the nucleotide excision activity of 3-methyladenine-DNA glycosylase (MPG), which suggested a role in DNA damage recognition in base excision repair. This protein contains an N-terminal ubiquitin-like domain, which was reported to interact with 26S proteasome, and thus this protein may be involved in the ubiquitin mediated proteolytic pathway in cells. Alternative splicing results in multiple transcript variants encoding distinct isoforms. [provided by RefSeq, Sep 2011]
由该基因编码的蛋白质是酿酒酵母RAD23,参与核苷酸切除修复(NER)的蛋白质的两种人类同系物之一。这种蛋白质被认为是特异性的补充?着色性干皮组(XP-c)的体外细胞提取物的NER缺陷的蛋白质复合物的组分。这种蛋白也显示与交互,和提升3-甲基腺嘌呤DNA糖基(MPG),这表明在DNA损伤识别在碱基切除修复作用的核苷酸切除活性。这种蛋白质含有N-末端泛素样结构域,这是据报道与26S蛋白酶相互作用,因此该蛋白可能参与细胞泛素介导的蛋白水解途径。在多个转录剪接变异体结果不同编码的亚型。 [由RefSeq的,2011年9月提供]
RAD23B基因(以及对应的蛋白质)的细胞分布位置:
RAD23B基因的本体(GO)信息:
名称 |
---|
4141 Protein processing in endoplasmic reticulum [PATH:hsa04141] |
3420 Nucleotide excision repair [PATH:hsa03420] |
名称 |
---|
DNA Damage Recognition in GG-NER |
DNA Repair |
Dual incision reaction in GG-NER |
Formation of incision complex in GG-NER |
Global Genomic NER (GG-NER) |
Nucleotide Excision Repair |
疾病名称 | 关系值 | NofPmids | NofSnps | 来源 |
Prostatic Neoplasms | 0.12 | 1 | 0 | CTD_human |
Craniofacial Abnormalities | 0.12 | 1 | 0 | CTD_human |
Male infertility | 0.12 | 1 | 0 | CTD_human |
Malignant neoplasm of urinary bladder | 0.010011012 | 4 | 3 | BeFree_GAD |
Malignant neoplasm of lung | 0.010011012 | 4 | 0 | BeFree_GAD |
Mammary Neoplasms | 0.005091382 | 2 | 0 | GAD_LHGDN |
Malignant neoplasm of breast | 0.005005506 | 3 | 0 | BeFree_GAD |
Liver carcinoma | 0.002995792 | 2 | 0 | BeFree_LHGDN |
Multiple Myeloma | 0.002995792 | 1 | 0 | BeFree_LHGDN |
Lymphoma, Follicular | 0.002638474 | 2 | 10 | BeFree_GAD |
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