SLC11A1(溶质载体家族11成员1,原名NRAMP1)是一种位于人类2号染色体上的基因,属于SLC11/NRAMP基因家族。该家族成员均为跨膜转运蛋白,主要功能是参与二价金属离子(如铁、锰)的转运,尤其在巨噬细胞等免疫细胞中发挥重要作用。SLC11A1编码的蛋白质定位于吞噬体膜,通过调节吞噬体内铁、锰等离子的浓度来影响病原体的存活,因为许多病原体需要这些金属离子进行生长繁殖。SLC11A1的生物学功能与先天免疫密切相关,它通过剥夺病原体必需的金属离子来抑制其生长,从而增强机体对多种细胞内病原体(如结核分枝杆菌、沙门氏菌等)的抵抗力。该基因的突变可能导致蛋白质功能异常,例如常见的D543N突变(第543位天冬氨酸变为天冬酰胺)会降低其转运活性,增加个体对结核病等感染的易感性。SLC11A1的表达水平变化也会显著影响机体功能:过表达可能增强对病原体的抵抗能力,但可能导致铁代谢紊乱;而表达降低则可能削弱免疫防御功能,增加感染风险。此外,SLC11A1的异常表达还与某些自身免疫性疾病(如类风湿性关节炎、克罗恩病)的发生发展有关,这可能与其参与调节炎症反应和金属离子稳态有关。SLC11/NRAMP基因家族的共性包括:都具有12个预测的跨膜结构域,依赖质子梯度进行金属离子转运,且在进化上高度保守。该家族另一个重要成员SLC11A2(NRAMP2/DMT1)则主要参与肠道铁吸收和红细胞铁利用。
This gene is a member of the solute carrier family 11 (proton-coupled divalent metal ion transporters) family and encodes a multi-pass membrane protein. The protein functions as a divalent transition metal (iron and manganese) transporter involved in iron metabolism and host resistance to certain pathogens. Mutations in this gene have been associated with susceptibility to infectious diseases such as tuberculosis and leprosy, and inflammatory diseases such as rheumatoid arthritis and Crohn disease. Alternatively spliced variants that encode different protein isoforms have been described but the full-length nature of only one has been determined. [provided by RefSeq, Jul 2008]
该基??因为溶质载体家族11(质子偶联的二价金属离子转运)家族的成员,编码多遍膜蛋白。该蛋白质作为二价过渡金属(铁和锰)转运参与铁代谢和宿主抗某些病原体。在这种基因突变与易感性传染病如结核病和麻风病,和炎性疾病,如类风湿关节炎和克罗恩病有关。编码不同蛋白同种型的可变剪接变体已被描述,但只有一个的全长性质已确定。 [由RefSeq的,2008年7月提供]
SLC11A1基因(以及对应的蛋白质)的细胞分布位置:
SLC11A1基因的本体(GO)信息:
名称 |
---|
4142 Lysosome [PATH:hsa04142] |
4978 Mineral absorption [PATH:hsa04978] |
名称 |
---|
Disease |
Infectious disease |
Latent infection of Homo sapiens with Mycobacterium tuberculosis |
Metal ion SLC transporters |
Phagosomal maturation (early endosomal stage) |
SLC-mediated transmembrane transport |
Transmembrane transport of small molecules |
Transport of glucose and other sugars, bile salts and organic acids, metal ions and amine compounds |
疾病名称 | 关系值 | NofPmids | NofSnps | 来源 |
Tuberculosis | 0.336899795 | 72 | 1 | BeFree_CTD_human_GAD_LHGDN_ORPHANET |
Crohn Disease | 0.144460901 | 11 | 0 | BeFree_CTD_human_GAD_LHGDN |
Rheumatoid Arthritis | 0.143265513 | 15 | 0 | BeFree_CTD_human_GAD_LHGDN |
Leprosy | 0.136721114 | 20 | 1 | BeFree_CTD_human_GAD |
Sarcoidosis | 0.133635564 | 6 | 0 | BeFree_CTD_human_GAD_LHGDN |
Diabetes Mellitus, Insulin-Dependent | 0.133192369 | 7 | 0 | BeFree_CTD_human_GAD |
Multiple Sclerosis | 0.130911214 | 6 | 0 | BeFree_CTD_human_GAD_LHGDN |
Inflammatory Bowel Diseases | 0.128815624 | 6 | 0 | BeFree_CTD_human_GAD_LHGDN |
Ulcerative Colitis | 0.127915422 | 5 | 0 | BeFree_CTD_human_GAD |
Leishmaniasis, Visceral | 0.127262917 | 9 | 2 | BeFree_CTD_human_GAD_LHGDN |
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