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This gene is a member of the cytidine deaminase gene family. It is one of seven related genes or pseudogenes found in a cluster, thought to result from gene duplication, on chromosome 22. Members of the cluster encode proteins that are structurally and functionally related to the C to U RNA-editing cytidine deaminase APOBEC1. The protein encoded by this gene lacks the zinc binding activity of other family members. The protein plays a role in immunity, by restricting transmission of foreign DNA such as viruses. One mechanism of foreign DNA restriction is deamination of foreign double-stranded DNA cytidines to uridines, which leads to DNA degradation. However, other mechanisms are also thought to be involved, as anti-viral effect is not dependent on deaminase activity. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2012]
[中文简述(自动翻译):]  此基因是胞苷脱氨酶的基因家族的一个成员。它是七相关基因或假基因的簇中发现,认为是由基因复制导致之一,对染色体22被结构和功能上相关的C向U的RNA编辑胞苷脱氨酶APOBEC1簇编码的蛋白质的成员。由该基因编码的蛋白质缺少其他家庭成员的锌结合活性。该蛋白在免疫中的作用,通过限制外源DNA的传输(如病毒)。外源DNA的限制性的一种机制是外国双链DNA胞苷到尿苷,从而导致DNA降解的脱氨。然而,其它机制也被认为参与,如抗病毒效果不依赖于脱氨酶的活性。已发现该基因编码不同亚型的两个转录变异体。 [由RefSeq的,2012年7月提供]
APOBEC3A基因(以及对应的蛋白质)的细胞分布位置:
APOBEC3A基因的本体(GO)信息:
| 疾病名称 | 关系值 | NofPmids | NofSnps | 来源 |
| Mammary Neoplasms | 0.12 | 1 | 0 | CTD_human |
| Juvenile arthritis | 0.12 | 1 | 0 | CTD_human |
| HIV Infections | 0.001085767 | 4 | 0 | BeFree |
| Malignant neoplasm of breast | 0.000542884 | 2 | 0 | BeFree |
| Breast Carcinoma | 0.000542884 | 2 | 0 | BeFree |
| Malignant neoplasm of skin | 0.000271442 | 1 | 0 | BeFree |
| Glioblastoma | 0.000271442 | 1 | 0 | BeFree |
| Glioma | 0.000271442 | 1 | 0 | BeFree |
| Psychotic Disorders | 0.000271442 | 1 | 0 | BeFree |
| Lentivirus Infections | 0.000271442 | 1 | 0 | BeFree |
| Liver and Intrahepatic Biliary Tract Carcinoma | 0.000271442 | 1 | 0 | BeFree |
| Malignant neoplasm of liver | 0.000271442 | 1 | 0 | BeFree |
| Nonorganic psychosis | 0.000271442 | 1 | 0 | BeFree |
| ovarian neoplasm | 0.000271442 | 1 | 0 | BeFree |
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