The image on the left is immunohistochemistry of paraffin-embedded Human liver cancer tissue using CSB-PA967586(PSMD14 Antibody) at dilution 1/25, on the right is treated with fusion protein. (Original magnification: ×200)
The image on the left is immunohistochemistry of paraffin-embedded Human lung cancer tissue using CSB-PA967586(PSMD14 Antibody) at dilution 1/25, on the right is treated with fusion protein. (Original magnification: ×200)
Gel: 10%SDS-PAGE, Lysate: 50 μg, Lane 1-2: NIH/3T3 cells, 231 cells, Primary antibody: CSB-PA967586(PSMD14 Antibody) at dilution 1/300, Secondary antibody: Goat anti rabbit IgG at 1/8000 dilution, Exposure time: 1 minute
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貨期:
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Component of the 26S proteasome, a multiprotein complex involved in the ATP-dependent degradation of ubiquitinated proteins. This complex plays a key role in the maintenance of protein homeostasis by removing misfolded or damaged proteins, which could impair cellular functions, and by removing proteins whose functions are no longer required. Therefore, the proteasome participates in numerous cellular processes, including cell cycle progression, apoptosis, or DNA damage repair. The PSMD14 subunit is a metalloprotease that specifically cleaves 'Lys-63'-linked polyubiquitin chains within the complex. Plays a role in response to double-strand breaks (DSBs): acts as a regulator of non-homologous end joining (NHEJ) by cleaving 'Lys-63'-linked polyubiquitin, thereby promoting retention of JMJD2A/KDM4A on chromatin and restricting TP53BP1 accumulation. Also involved in homologous recombination repair by promoting RAD51 loading.
基因功能參考文獻(xiàn):
overexpression of RPN11 in breast cancer tissues was associated with an advanced clinical stage. Patients with tumors with high expression of RPN11 had worse prognosis. PMID: 28535005
Deubiquitylase POH1 stabilizes E2F1 protein through binding to and deubiquitylating E2F1 in liver cancer. PMID: 26510456
The data demonstrated that proteasomal POH1 is a key de-ubiquitinating enzyme that regulates ubiquitin conjugates generated in response to damage and that several aspects of the DNA double-strand break response are regulated by the proteasome. PMID: 22909820
Disorder of POH1 expression is involved in the onset of idiopathic nephrotic syndrome (INS), and confers multidrug resistance in children with INS PMID: 19419512
Down-regulation of PSMD14 results in decreased cell proliferation, cell cycle arrest and senescence. A comparative study with PSMB5, revealed that PSMB5 and PSMD14 have different effects on cell cycle, senescence and associated molecular events. PMID: 19732767
Ectopic expression of POH1 in HEK293 cells decreased the level of c-Jun ubiquitination, leading to significant accumulation of the protein and a corresponding increase in AP1-mediated gene expression PMID: 16569633
An intact zinc metalloproteinase motif of Poh1 is essential for cell viability and 26S proteasome function. PMID: 17237285
Specificity for K63-linked polyubiquitin is a common property of the JAMM/MPN+ family of deubiquitinating enzymes. PMID: 19214193
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蛋白家族:
Peptidase M67A family, PSMD14 subfamily
組織特異性:
Widely expressed. Highest levels in heart and skeletal muscle.