ERCC6(Excision Repair Cross-Complementation Group 6),也称为CSB(Cockayne Syndrome B),是一种关键的DNA修复基因,属于核苷酸切除修复(NER)通路中的转录偶联修复(TCR)亚通路。该基因编码的CSB蛋白在修复由紫外线或化学物质引起的DNA损伤中起核心作用,特别是当损伤阻碍RNA聚合酶II的转录时。CSB蛋白通过招募其他修复因子(如XPA、XPG等)到损伤位点,促进损伤DNA的切除和修复。ERCC6基因突变会导致科凯恩综合征(Cockayne syndrome,CS),这是一种罕见的常染色体隐性遗传病,表现为生长迟缓、早衰、光敏感、神经退行性变和发育缺陷。患者通常因DNA修复缺陷导致细胞凋亡增加,寿命显著缩短。此外,ERCC6突变还与某些癌症易感性相关,因为DNA损伤积累可能引发基因组不稳定。ERCC6过表达可能增强细胞的DNA修复能力,减少突变积累,但过度激活可能干扰正常转录平衡。相反,ERCC6表达降低会导致DNA损伤修复效率下降,增加细胞对紫外线或化疗药物的敏感性,并可能加速衰老或肿瘤发生。ERCC6属于ERCC(Excision Repair Cross-Complementation)基因家族,该家族成员均参与DNA损伤修复,特别是NER通路,共同维护基因组稳定性。家族成员如ERCC1-ERCC8在修复螺旋扭曲性损伤(如嘧啶二聚体)中协作,其中ERCC6与ERCC8(CSA)在TCR中功能密切相关。研究还发现ERCC6可能参与线粒体功能调控和炎症反应,拓宽了其生物学作用的认知。
This gene encodes a DNA-binding protein that is important in transcription-coupled excision repair. The encoded protein has ATP-stimulated ATPase activity, interacts with several transcription and excision repair proteins, and may promote complex formation at DNA repair sites. Mutations in this gene are associated with Cockayne syndrome type B and cerebrooculofacioskeletal syndrome 1. Naturally-occurring readthrough transcription occurs between this gene and the adjacent PGBD3 gene (GeneID:267004), and results in a fusion protein that shares sequence with the product of each individual gene. The readthrough locus is represented by GeneID:101243544. [provided by RefSeq, Mar 2013]
这个基因编码的DNA结合蛋白,其是在转录偶联切除修复重要。该编码的蛋白已经ATP刺激的ATP酶活性,与几个转录和切除修复蛋白相互作用,并可能在促进DNA修复部位形成复合物。与每个的产物共享序列,并导致一种融合蛋白:此基因和相邻PGBD3基因(267004 GeneID)之间发生在该基因突变为B科凯恩综合征类型和cerebrooculofacioskeletal综合征相关1.天然存在的通读转录个人基因。该通读轨迹由GeneID表示:101243544。 [由RefSeq的,2013年3月提供]
ERCC6基因(以及对应的蛋白质)的细胞分布位置:
ERCC6基因的本体(GO)信息:
名称 |
---|
3420 Nucleotide excision repair [PATH:hsa03420] |
名称 |
---|
DNA Repair |
Dual incision reaction in TC-NER |
Formation of transcription-coupled NER (TC-NER) repair complex |
Gene Expression |
Nucleotide Excision Repair |
RNA Polymerase I Promoter Clearance |
RNA Polymerase I Transcription |
RNA Polymerase I Transcription Initiation |
RNA Polymerase I, RNA Polymerase III, and Mitochondrial Transcription |
Transcription |
Transcription-coupled NER (TC-NER) |
疾病名称 | 关系值 | NofPmids | NofSnps | 来源 |
Cerebrooculofacioskeletal Syndrome 1 | 0.481085767 | 5 | 3 | BeFree_CLINVAR_CTD_human_ORPHANET_UNIPROT |
Cockayne Syndrome, Type II | 0.441085767 | 5 | 21 | BeFree_CLINVAR_MGD_ORPHANET_UNIPROT |
De Sanctis-Cacchione syndrome | 0.24 | 1 | 1 | CLINVAR_CTD_human |
Cockayne Syndrome | 0.16371558 | 68 | 0 | BeFree_CTD_human_GAD_LHGDN |
Lung Neoplasms | 0.128173051 | 3 | 0 | CTD_human_LHGDN |
Age related macular degeneration | 0.128001298 | 3 | 0 | BeFree_CTD_human_GAD_LHGDN |
Cockayne Syndrome, Type I | 0.122714419 | 10 | 0 | BeFree_ORPHANET |
Microcephaly | 0.12 | 2 | 0 | CTD_human |
Pena Shokeir syndrome Type 2 | 0.12 | 0 | 0 | ORPHANET |
UV-SENSITIVE SYNDROME 1 | 0.12 | 0 | 0 | CTD_human |
关注微信订阅号,实时查看信息,关注医学生物学动态。