XRCC2 (X-ray repair cross complementing 2)

symbol:
XRCC2
locus group:
protein-coding gene
location:
7q36.1
gene_family:
alias symbol:
FANCU
alias name:
RAD51-like
entrez id:
7516
ensembl gene id:
ENSG00000196584
ucsc gene id:
uc003wld.4
refseq accession:
NM_005431
hgnc_id:
HGNC:12829
approved reserved:
1995-02-07
7q36.1
基因染色体位置图

XRCC2(X-ray repair cross-complementing protein 2)是参与DNA损伤修复的关键基因,属于RAD51基因家族。该家族主要负责同源重组修复(HR, homologous recombination),这是一种高保真度的DNA双链断裂(DSB, double-strand break)修复机制。XRCC2与RAD51家族其他成员(如RAD51B、RAD51C、RAD51D)形成复合物,共同促进DNA链的配对和交换,确保遗传信息准确修复。XRCC2蛋白在细胞核内发挥作用,直接参与稳定RAD51复合物并促进其定位到DNA损伤位点。若XRCC2发生功能丧失性突变(如错义突变或截短突变),会导致同源重组修复缺陷,引发基因组不稳定性,表现为染色体易位、断裂或微核形成。这类突变与遗传性乳腺癌、卵巢癌(如BRCAness表型)及范可尼贫血(Fanconi anemia)等疾病密切相关。XRCC2表达水平异常也会影响机体功能:过表达可能通过过度修复导致化疗耐药性(如对铂类药物),而低表达或缺失会使细胞对电离辐射和DNA交联剂极度敏感,加剧癌变风险。RAD51基因家族的共性在于均编码ATP酶依赖性重组酶,通过形成核蛋白丝介导DNA链侵入和同源搜索。XRCC2作为该家族非催化亚基,虽无直接酶活性,但对维持复合体结构和功能不可或缺。目前中文术语"X射线修复交叉互补蛋白2"为直译,但更常用XRCC2缩写。研究还发现XRCC2单核苷酸多态性(SNP)可能影响癌症易感性,其调控机制涉及转录因子结合或miRNA干预。靶向XRCC2的药物正在开发中,旨在增强放疗/化疗效果或治疗HR缺陷型肿瘤。

This gene encodes a member of the RecA/Rad51-related protein family that participates in homologous recombination to maintain chromosome stability and repair DNA damage. This gene is involved in the repair of DNA double-strand breaks by homologous recombination and it functionally complements Chinese hamster irs1, a repair-deficient mutant that exhibits hypersensitivity to a number of different DNA-damaging agents. [provided by RefSeq, Jul 2008]

这个基因编码,在同源重组参与维持染色体稳定性和修复DNA损伤的RecA /的Rad51相关蛋白家族的一个成员。此基因参与DNA双链断裂通过同源重组修复和它在功能上的补充中国仓鼠IRS1,修复缺陷型突变体显示出过敏到多个不同的DNA损伤剂。 [由RefSeq的,2008年7月提供]

XRCC2基因的碱基序列:[NCBI]
Loading Gene Browser...
XRCC2基因的碱基突变:           仅显示部分snp
rs1029423       rs2040639       rs2106776       rs2237809       rs2237810       rs2283101       rs3094404       rs3094405       rs3094406       rs3094407       rs3094408       rs3111465       rs3111471       rs3111473       rs3218368       rs3218369       rs3218370      

XRCC2基因在不同组织中的表达:    [UniProt]

基因在不同组织中的表达图
正向引物序列
正向Tm值
反向引物序列
反向Tm值
评分
      尚未收录相关数据

XRCC2基因(以及对应的蛋白质)的细胞分布位置:

[UniProt]     [GenomeNet]

" d="M482.414,245.296c3.539,4.293,4.455,10.009,0.202,11 c-4.244,0.996-4.983-10.983-8.293-8.438c-5.271,4.08,9.834,12.271,5.144,17.287c-3.717,3.607-6.172-5.75-10.839-1.976 c-4.673,3.776,6.781,7.299,2.831,11.326c-4.354,4.045-6.979-1.449-9.837-5.517c-1.193-1.742-2.059-3.851-3.595-2.748 c-1.516,1.078-1.854,1.795-0.938,3.666c2.374,4.854,9.235,10.119,5.156,12.535c-5.636,3.346-5.044-8.871-9.426-7.574 c-4.388,1.291,2.557,10.66-1.245,11.141c-4.089,0.545-3.483-10.239-6.979-8.575c-2.522,1.206-0.929,3.071-0.938,4.899 c0.004,1.32-0.964,3.6-2.372,4.062c-3.593,1.171-8.544-1.065-10.251-3.59c-6.04-8.93,0.396-15.997,4.639-7.015 c3.023,4.642,5.182,0.834,2.839-2.219c-1.032-1.354-4.309-5.901-0.781-7.252c2.904-1.113,4.271,1.941,5.985,4.592 c2.61,4.016,5.485,0.117,3.031-3.414c-1.828-2.633-2.74-3.803,3.156-7.42c6.405-4.369,6.52,3.869,10.077,0.646 c2.309-1.832-4.783-5.149,0.06-8.995c2.896-2.293,5.18,6.207,7.961,3.516c3.523-2.737-7.717-7.369,0.117-11.736 C473.413,240.77,480.519,242.891,482.414,245.296z"/> Extracellular space Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi Apparatus Nucleus Mitochondrion 0 1 2 3 4 5 Confidence
  • 质膜
  • 细胞质
  • 细胞外
  • 高尔基体
  • 囊泡
  • 细胞骨架
  • 内质网
  • 细胞核
  • 内体
  • 溶酶体
  • 线粒体

XRCC2基因的本体(GO)信息:

GO库代码
对应的蛋白质
来源代码
GO:0000150
O43543 (UniProtKB)
IBA
GO:0000278
O43543 (UniProtKB)
IMP
GO:0000707
O43543 (UniProtKB)
IBA
GO:0000724
O43543 (UniProtKB)
IMP
GO:0000731
O43543 (UniProtKB)
TAS
GO:0000732
O43543 (UniProtKB)
TAS
GO:0001701
O43543 (UniProtKB)
IEA
GO:0001756
O43543 (UniProtKB)
IEA
GO:0003690
O43543 (UniProtKB)
IBA
GO:0003697
O43543 (UniProtKB)
IBA
GO:0005515
O43543 (UniProtKB)
IPI
GO:0005515
O43543 (UniProtKB)
IPI
GO:0005515
O43543 (UniProtKB)
IPI
GO:0005515
O43543 (UniProtKB)
IPI
GO:0005515
O43543 (UniProtKB)
IPI
GO:0005515
O43543 (UniProtKB)
IPI
GO:0005515
O43543 (UniProtKB)
IPI
GO:0005515
O43543 (UniProtKB)
IPI
GO:0005515
O43543 (UniProtKB)
IPI
GO:0005515
O43543 (UniProtKB)
IPI
GO:0005524
O43543 (UniProtKB)
IEA
GO:0005654
O43543 (UniProtKB)
TAS
GO:0005654
O43543 (UniProtKB)
TAS
GO:0005654
O43543 (UniProtKB)
TAS
GO:0005654
O43543 (UniProtKB)
TAS
GO:0005654
O43543 (UniProtKB)
TAS
GO:0005654
O43543 (UniProtKB)
TAS
GO:0005654
O43543 (UniProtKB)
TAS
GO:0005654
O43543 (UniProtKB)
TAS
GO:0005654
O43543 (UniProtKB)
TAS
GO:0005654
O43543 (UniProtKB)
TAS
GO:0005654
O43543 (UniProtKB)
TAS
GO:0005654
O43543 (UniProtKB)
TAS
GO:0005657
O43543 (UniProtKB)
IDA
GO:0005737
O43543 (UniProtKB)
IEA
GO:0005813
O43543 (UniProtKB)
IDA
GO:0006281
O43543 (UniProtKB)
IGI
GO:0006312
O43543 (UniProtKB)
IBA
GO:0007126
O43543 (UniProtKB)
TAS
GO:0007131
O43543 (UniProtKB)
IBA
GO:0008094
O43543 (UniProtKB)
IBA
GO:0010165
O43543 (UniProtKB)
IEA
GO:0010212
O43543 (UniProtKB)
IBA
GO:0010332
O43543 (UniProtKB)
IEA
GO:0033063
O43543 (UniProtKB)
IDA
GO:0035264
O43543 (UniProtKB)
IEA
GO:0042148
O43543 (UniProtKB)
IDA
GO:0043524
O43543 (UniProtKB)
IEA
GO:0050769
O43543 (UniProtKB)
IEA
GO:0051297
O43543 (UniProtKB)
IMP
GO:2000269
O43543 (UniProtKB)
IEA
GO:0000400
O43543 (UniProtKB)
IDA
GO:0004520
O43543 (UniProtKB)
IBA

可能调控 XRCC2基因的相关microRNA:     

MINT

BioGrid

IntAct

mentha

String

基因与其他基因之间的相互作用关系图
序号 作用方式 资源库来源/分值 基因名称 基因名称
疾病名称 关系值 NofPmids NofSnps 来源
疾病名称 关系值 NofPmids NofSnps 来源
Mammary Neoplasms 0.130182764 5 0 CTD_human_GAD_LHGDN
Neoplastic Syndromes, Hereditary 0.12 0 2 CLINVAR
Malignant neoplasm of breast 0.036200253 25 3 BeFree_GAD
Malignant neoplasm of lung 0.016569224 7 0 GAD
Malignant neoplasm of urinary bladder 0.012106602 5 0 BeFree_GAD
Mouth Neoplasms 0.009825446 3 0 GAD_LHGDN
Squamous cell carcinoma 0.009825446 3 0 GAD_LHGDN
Adenocarcinoma 0.007458414 2 0 GAD_LHGDN
Esophageal Neoplasms 0.007101096 3 0 GAD
Malignant neoplasm of ovary 0.006905599 9 5 BeFree_GAD

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