POLD1基因编码DNA聚合酶δ的催化亚基,是DNA聚合酶δ复合物的核心组成部分,负责真核生物DNA的复制和修复。该基因在细胞分裂过程中至关重要,参与前导链和滞后链的合成,并在DNA损伤修复中发挥关键作用。POLD1属于B家族DNA聚合酶,该家族成员具有高度保守的聚合酶结构域和3'-5'核酸外切酶校对活性,确保DNA复制的准确性。POLD1突变会导致校对功能丧失,增加基因组不稳定性,与多种癌症(如结直肠癌、子宫内膜癌)和早衰综合征(如MAND综合征)相关。POLD1的某些突变(如S478N)已被证实与癌症易感性显著相关。过表达POLD1可能加速细胞周期进程,促进肿瘤发生;而表达降低则会导致复制压力增加、DNA损伤积累和细胞凋亡。POLD1还与WRN、PCNA等蛋白相互作用,共同维持基因组稳定性。该基因作为潜在的癌症治疗靶点受到关注,其抑制剂正在研发中。POLD1基因家族(B家族聚合酶)成员均具有DNA依赖的DNA聚合酶活性,在进化上高度保守,参与DNA复制和修复等基本生命过程。
This gene encodes the 125-kDa catalytic subunit of DNA polymerase delta. DNA polymerase delta possesses both polymerase and 3' to 5' exonuclease activity and plays a critical role in DNA replication and repair. Alternatively spliced transcript variants have been observed for this gene, and a pseudogene of this gene is located on the long arm of chromosome 6. [provided by RefSeq, Mar 2012]
该基因编码DNA聚合酶三角洲的125 kDa的催化亚单位。的DNA聚合酶δ具有既聚合酶和3‘至5‘外切酶活性和在DNA复制和修复的关键作用。另外剪接转录变体已经观察到这种基因,而这种基因的假基因位于[由RefSeq的,2012年3月提供]的6号染色体长臂
POLD1基因(以及对应的蛋白质)的细胞分布位置:
POLD1基因的本体(GO)信息:
| 名称 |
|---|
| 230 Purine metabolism [PATH:hsa00230] |
| 240 Pyrimidine metabolism [PATH:hsa00240] |
| 3030 DNA replication [PATH:hsa03030] |
| 3410 Base excision repair [PATH:hsa03410] |
| 3420 Nucleotide excision repair [PATH:hsa03420] |
| 3430 Mismatch repair [PATH:hsa03430] |
| 3440 Homologous recombination [PATH:hsa03440] |
| 5166 HTLV-I infection [PATH:hsa05166] |
| 名称 |
|---|
| Base Excision Repair |
| Cell Cycle |
| Cell Cycle, Mitotic |
| Chromosome Maintenance |
| Cytosolic iron-sulfur cluster assembly |
| DNA Damage Bypass |
| DNA Repair |
| DNA Replication |
| DNA strand elongation |
| Extension of Telomeres |
| Gap-filling DNA repair synthesis and ligation in GG-NER |
| Gap-filling DNA repair synthesis and ligation in TC-NER |
| Global Genomic NER (GG-NER) |
| Lagging Strand Synthesis |
| Leading Strand Synthesis |
| Mismatch Repair |
| Mismatch repair (MMR) directed by MSH2:MSH3 (MutSbeta) |
| Mismatch repair (MMR) directed by MSH2:MSH6 (MutSalpha) |
| Nucleotide Excision Repair |
| PCNA-Dependent Long Patch Base Excision Repair |
| Polymerase switching |
| Polymerase switching on the C-strand of the telomere |
| Processive synthesis on the C-strand of the telomere |
| Processive synthesis on the lagging strand |
| Recognition of DNA damage by PCNA-containing replication complex |
| Removal of the Flap Intermediate |
| Removal of the Flap Intermediate from the C-strand |
| Repair synthesis for gap-filling by DNA polymerase in TC-NER |
| Repair synthesis of patch ~27-30 bases long by DNA polymerase |
| Resolution of Abasic Sites (AP sites) |
| Resolution of AP sites via the multiple-nucleotide patch replacement pathway |
| S Phase |
| Synthesis of DNA |
| Telomere C-strand (Lagging Strand) Synthesis |
| Telomere Maintenance |
| Termination of translesion DNA synthesis |
| Transcription-coupled NER (TC-NER) |
| Translesion synthesis by Y family DNA polymerases bypasses lesions on DNA template |
| 疾病名称 | 关系值 | NofPmids | NofSnps | 来源 |
| ANDIBULAR HYPOPLASIA, DEAFNESS, PROGEROID FEATURES, AND LIPODYSTROPHY SYNDROME | 0.240271442 | 1 | 1 | BeFree_CLINVAR_ORPHANET |
| COLORECTAL CANCER, SUSCEPTIBILITY TO, 10 | 0.24 | 2 | 3 | CLINVAR_UNIPROT |
| Lipodystrophy | 0.120542884 | 2 | 0 | BeFree_CTD_human |
| Colorectal Neoplasms | 0.120271442 | 2 | 0 | BeFree_CTD_human |
| Jaw Abnormalities | 0.12 | 1 | 0 | CTD_human |
| Deafness | 0.12 | 1 | 0 | CTD_human |
| Endometrial Neoplasms | 0.12 | 1 | 0 | CTD_human |
| Hypogonadism | 0.12 | 1 | 0 | CTD_human |
| Malignant neoplasm of breast | 0.008729747 | 8 | 27 | BeFree_GAD |
| Malignant neoplasm of urinary bladder | 0.007372538 | 4 | 0 | BeFree_GAD |
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