KIR2DL4 (killer cell immunoglobulin like receptor, two Ig domains and long cytoplasmic tail 4)

symbol:
KIR2DL4
locus group:
protein-coding gene
location:
19q13.42
gene_family:
CD molecules|Immunoglobulin-like domain containing|Killer cell immunoglobulin-like receptors
alias symbol:
103AS|15.212|CD158D
alias name:
None
entrez id:
3805
ensembl gene id:
ENSG00000189013
ucsc gene id:
uc002qhg.5
refseq accession:
NM_002255
hgnc_id:
HGNC:6332
approved reserved:
1997-11-14
19q13.42
基因染色体位置图

KIR2DL4(杀伤细胞免疫球蛋白样受体2DL4)是杀伤细胞免疫球蛋白样受体(KIR)基因家族的重要成员,主要表达于自然杀伤(NK)细胞表面。该基因位于人类19号染色体上,属于KIR基因家族,该家族由多个高度多态性的基因组成,编码的受体可识别主要组织相容性复合体(MHC)I类分子,在免疫调节中发挥关键作用。KIR2DL4的独特之处在于它既能作为抑制性受体(通过胞内ITIM结构域传递抑制信号),又能作为激活受体(通过结合FcRγ链传递激活信号)。其主要配体是非经典MHC I类分子HLA-G,这种相互作用在母胎耐受和免疫逃逸中至关重要。KIR2DL4在妊娠期间调节NK细胞对胎盘的侵袭,维持母胎界面免疫平衡。该基因突变可能导致功能异常,与反复流产、子痫前期等妊娠并发症相关,也可能影响肿瘤免疫监视。KIR2DL4过表达可能增强NK细胞对HLA-G阳性细胞的识别(如某些肿瘤细胞),但过度激活可能导致自身免疫风险;而表达降低则可能削弱母胎耐受,增加流产风险或降低抗肿瘤免疫力。KIR基因家族的共同特征是都编码细胞表面受体,具有免疫球蛋白样结构域,参与NK细胞功能调控,且多数具有多态性,在个体间呈现高度多样性。KIR2DL4因其双重信号特性在家族中较为特殊,其表达水平受表观遗传调控,在不同NK细胞亚群中表达差异显著。该基因还与某些病毒感染(如HIV)的疾病进展相关,可能影响病毒免疫逃逸机制。

Killer cell immunoglobulin-like receptors (KIRs) are transmembrane glycoproteins expressed by natural killer cells and subsets of T cells. The KIR genes are polymorphic and highly homologous and they are found in a cluster on chromosome 19q13.4 within the 1 Mb leukocyte receptor complex (LRC). The gene content of the KIR gene cluster varies among haplotypes, although several "framework" genes are found in all haplotypes (KIR3DL3, KIR3DP1, KIR3DL4, KIR3DL2). The KIR proteins are classified by the number of extracellular immunoglobulin domains (2D or 3D) and by whether they have a long (L) or short (S) cytoplasmic domain. KIR proteins with the long cytoplasmic domain transduce inhibitory signals upon ligand binding via an immune tyrosine-based inhibitory motif (ITIM), while KIR proteins with the short cytoplasmic domain lack the ITIM motif and instead associate with the TYRO protein tyrosine kinase binding protein to transduce activating signals. The ligands for several KIR proteins are subsets of HLA class I molecules; thus, KIR proteins are thought to play an important role in regulation of the immune response. This gene is one of the "framework" loci that is present on all haplotypes. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2008]

杀伤细胞免疫球蛋白样受体(的KIRs)是通过自然杀伤细胞和T细胞亚群表达跨膜糖蛋白。的KIR基因多态和高度同源的并且它们中的1兆白细胞受体复合物(LRC)内染色体19q13.4群集找到。的KIR基因簇的基因含量的单倍型的不同而不同,虽然有几个“框架”的基因在所有的单倍型(KIR3DL3,KIR3DP1,KIR3DL4,KIR3DL2)找到。的KIR蛋白由细胞外免疫球蛋白结构域(2D或3D)的数目和由划分他们是否具有长(L)或短(S) - 胞质域。与长的胞质域的KIR蛋白质在配体经由一个基于免疫受体酪氨酸的抑制基序(ITIM)结合转导抑制性信号,同时与短胞质域KIR蛋白缺乏ITIM基序,而是与TYRO蛋白酪氨酸激酶关联结合蛋白转导激活信号。数KIR蛋白配体是HLA I类分子的子集;因而,KIR蛋白被认为在免疫应答的调节中发挥着重要作用。这个基因就是“框架”的位点是存在于所有的单倍型中的一个。选择性剪接结果在多个抄本变形。 [由RefSeq的,2008年7月提供]

CCND1基因的碱基序列:[NCBI]
Loading Gene Browser...
KIR2DL4基因的碱基突变:           仅显示部分snp
rs589158       rs592645       rs597598       rs598452       rs600898       rs604076       rs604077       rs604999       rs607149       rs608316       rs608368       rs616496       rs617872       rs617907       rs618835       rs618871       rs621169      

KIR2DL4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
ATGTCTTGGGTTCTTCTTGGA
59
GTCAAAGGAGCTCTGGGAG
60
ATGTCTTGGGTTCTTCTTGGA
59
AGTGACACCGAAGAGTCAC
59
CATGTCTTGGGTTCTTCTTGG
59
GAAGAGTCACGTGTCCTCC
60
CATGTCTTGGGTTCTTCTTGG
59
AGGACAAGGTCACGTTCTC
59
ATGTCTTGGGTTCTTCTTGGA
59
GAAGAGTCACGTGTCCTCC
60
ATGTCTTGGGTTCTTCTTGGA
59
AGGACAAGGTCACGTTCTC
59
      尚未收录相关数据

KIR2DL4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

KIR2DL4基因的本体(GO)信息:

GO库代码
对应的蛋白质
来源代码
GO:0016021
A0A0B4J1S6 (UniProtKB)
IEA
GO:0016021
A0A0C4ZNX8 (UniProtKB)
IEA
GO:0016021
A0A0G2JLM0 (UniProtKB)
IEA
GO:0016021
A0A0G2JLR3 (UniProtKB)
IEA
GO:0016021
A0A0G2JMD1 (UniProtKB)
IEA
GO:0016021
A0A0G2JMF5 (UniProtKB)
IEA
GO:0016021
A0A0G2JMV5 (UniProtKB)
IEA
GO:0016021
A0A0G2JN69 (UniProtKB)
IEA
GO:0016021
A0A0G2JNG7 (UniProtKB)
IEA
GO:0016021
A0A0G2JNI1 (UniProtKB)
IEA
GO:0016021
A0A0G2JNK6 (UniProtKB)
IEA
GO:0016021
A0A0G2JP28 (UniProtKB)
IEA
GO:0016021
A0A0G2JPG6 (UniProtKB)
IEA
GO:0016021
A0A0G2JQ39 (UniProtKB)
IEA
GO:0016021
A8MT18 (UniProtKB)
IEA
GO:0016021
E7EST5 (UniProtKB)
IEA
GO:0016021
K7QUT1 (UniProtKB)
IEA
GO:0016021
K7RE46 (UniProtKB)
IEA
GO:0016021
Q86U48 (UniProtKB)
IEA
GO:0004888
Q99706 (UniProtKB)
TAS
GO:0005515
Q99706 (UniProtKB)
IPI
GO:0005515
Q99706 (UniProtKB)
IPI
GO:0005515
Q99706 (UniProtKB)
IPI
GO:0005886
Q99706 (UniProtKB)
TAS
GO:0005887
Q99706 (UniProtKB)
TAS
GO:0006968
Q99706 (UniProtKB)
TAS
GO:0007165
Q99706 (UniProtKB)
TAS
GO:0016020
Q99706 (UniProtKB)
IDA
GO:0050776
Q99706 (UniProtKB)
TAS

可能调控 KIR2DL4基因的相关microRNA:     

Reactome

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
Diabetes Mellitus, Insulin-Dependent 0.007372538 4 0 BeFree_GAD
Graft-vs-Host Disease 0.007101096 3 0 GAD
leukemia 0.007101096 3 0 GAD
HIV Infections 0.00554839 5 0 BeFree_GAD
Multiple Sclerosis 0.005276948 3 0 BeFree_GAD
Autoimmune Diseases 0.005005506 3 0 BeFree_GAD
Lupus Erythematosus, Systemic 0.005005506 3 0 BeFree_GAD
Pregnancy loss 0.004734064 2 0 GAD
Cervix carcinoma 0.004734064 2 0 GAD
Uveomeningoencephalitic Syndrome 0.004734064 2 0 GAD

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