UCHL5 Antibody

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Description

Biological Role of UCHL5

UCHL5 regulates multiple pathways via deubiquitination:

  • Wnt/β-Catenin Signaling: Stabilizes Axin1 in the β-catenin destruction complex, suppressing Wnt signaling in HeLa, MCF7, and A549 cancer cells .

  • Proteasome Function: Associates with the 26S proteasome via Rpn13, enhancing deubiquitinating activity .

  • Cancer Pathways: Modulates AKT/mTOR signaling in bladder cancer and c-Myc expression, driving proliferation .

Key Studies Utilizing UCHL5 Antibody

  • Wnt Pathway Regulation:

    • UCHL5 knockdown (KD) increases β-catenin levels and Wnt target genes (e.g., Axin2, c-Myc) under Wnt3a stimulation .

    • Co-immunoprecipitation (Co-IP) confirms UCHL5 interaction with Axin1, β-catenin, and GSK3β .

  • Cancer Biomarker Potential:

    Cancer TypeAssociationSource
    Lung AdenocarcinomaHigh UCHL5 correlates with tumor size, lymph node invasion, and poor survival
    Bladder CancerDrives proliferation via AKT/mTOR-c-Myc axis
    Endometrial CancerPromotes tumor growth through Wnt signaling
  • Mechanistic Insights:

    • UCHL5 stabilizes Axin1 by inhibiting proteasomal degradation, independent of its deubiquitinating activity .

    • In lung adenocarcinoma, UCHL5 KD reduces cyclin D1, CDK4, and phosphorylated Rb, arresting cell cycle progression .

Validation Data

ApplicationSample TypeResult
WBHeLa cell lysateClear band at 38 kDa
IHCMouse kidney tissueCytoplasmic staining with TE buffer antigen retrieval
ELISARecombinant UCHL5High specificity for UCHL5 fusion protein

Limitations and Future Directions

  • Context-Dependent Roles: UCHL5 exhibits opposing effects on Wnt signaling in different cancers (e.g., inhibitory in HeLa vs. promotive in HepG2) .

  • Substrate Specificity: The E3 ligase responsible for Axin1 ubiquitination remains unidentified, necessitating further study .

Product Specs

Buffer
Preservative: 0.03% Proclin 300
Constituents: 50% Glycerol, 0.01M PBS, pH 7.4
Form
Liquid
Lead Time
Made-to-order (14-16 weeks)
Synonyms
UCH37 antibody; AD-019 antibody; CGI 70 antibody; INO80 complex subunit R antibody; INO80R antibody; Ubiquitin C terminal hydrolase L5 antibody; Ubiquitin C terminal hydrolase UCH37 antibody; Ubiquitin C-terminal hydrolase UCH37 antibody; Ubiquitin carboxyl terminal esterase L5 antibody; Ubiquitin carboxyl terminal hydrolase isozyme L5 antibody; Ubiquitin carboxyl terminal hydrolase L5 antibody; Ubiquitin carboxyl-terminal hydrolase isozyme L5 antibody; Ubiquitin thioesterase L5 antibody; Ubiquitin thiolesterase L5 antibody; UCH L5 antibody; UCH-L5 antibody; UCHL5 antibody; UCHL5_HUMAN antibody
Target Names
UCHL5
Uniprot No.

Target Background

Function
UCHL5 is a protease that specifically cleaves 'Lys-48'-linked polyubiquitin chains. It functions as a deubiquitinating enzyme associated with the 19S regulatory subunit of the 26S proteasome. UCHL5 is a putative regulatory component of the INO80 complex, though it is inactive within this complex. Its activity is triggered by a transient interaction between the INO80 complex and the proteasome via ADRM1.
Gene References Into Functions
  1. Our research reveals a novel mechanism for chromatin occupancy of Tcf7 and highlights the physiological significance of UCHL5 during early vertebrate development by regulating the Wnt/beta-catenin pathway. PMID: 28198400
  2. Our studies provide a molecular mechanism by which UCHL5 mitigates TGFbeta-1 signaling through stabilization of Smad2/Smad3. These findings suggest that UCHL5 may contribute to the pathogenesis of idiopathic pulmonary fibrosis and could be a potential therapeutic target. PMID: 27604640
  3. Positive cytoplasmic UCHL5 tumor immunoexpression is associated with increased survival in patients with small (<5 cm) tumors (p = 0.001), disease stages I-II (p = 0.025), and age 66 years or older (p = 0.037). Therefore, UCHL5 is a potential marker in gastric cancer with significant prognostic relevance. PMID: 29474458
  4. Our report demonstrates the significant potential of targeting USP14/UCHL5 with VLX1570 in drug-resistant Waldenstrom macroglobulinemia (WM), suggesting a high potential for clinical translation. PMID: 27813535
  5. UCHL5 is a promising novel prognostic marker in lymph-node-positive rectal cancer. Our findings advance the currently limited knowledge of biomarkers in colorectal cancer treatment. PMID: 28681694
  6. UCHL5 expression could function as a prognostic marker in pancreatic ductal adenocarcinoma, particularly at disease stages IIB to III. As UCHL5 is one of the few markers predicting increased survival, our results may have clinical relevance. PMID: 28653876
  7. These results uncover a novel mechanism for E2F1 transcriptional activation through the removal of its Lys-63-linked ubiquitination by UCHL5. PMID: 26396186
  8. UCHL5 comprises two domains: a globular UCH-domain and a fibrous C-terminal tail. The C-terminal residues of UCHL5 are involved in Rpn13 binding. PMID: 21953935
  9. Data indicate that ubiquitin thioesterase L5 UCHL5 (UCHL5) comprises a catalytic UCH domain followed by the four-helix (alpha8-alpha11) C-terminal domain. PMID: 25702872
  10. High expression of UCHL5 is significantly associated with epithelial ovarian cancer. PMID: 25123264
  11. b-AP15, an inhibitor of deubiquitylating enzyme USP14 and UCHL5, induces apoptosis in multiple myeloma and overcomes bortezomib resistance. PMID: 24319254
  12. UCHL5 over-expression is associated with hepatocellular carcinoma recurrence. PMID: 23220010
  13. UCHL5 is associated with outcome and recurrence of ESCC and can serve as a novel predictor for poor prognosis of esophageal squamous cell carcinoma patients after curative resection. PMID: 22615012
  14. A functional proteomic analysis was performed to screen UCHL5-interacting proteins in hepatocellular carcinoma (HCC), and glucose-regulated protein 78 was identified as one interacting with UCHL5. PMID: 21800051
  15. Our structures reveal conformationally dynamic parts of the enzyme that may play a role in the structural transition to the more active form. PMID: 21995438
  16. Silencing of UCHL5 in A549 cells induced apoptosis. PMID: 21287580
  17. UCHL5 interacts with Smads and regulates TGF-beta signalling. PMID: 16027725
  18. Upregulation of UCHL5 is associated with Uterine Cervical Neoplasms. PMID: 16402389
  19. In the nucleus, UCHL5 is also associated with the human Ino80 chromatin-remodeling complex (hINO80). PMID: 18922472
  20. The crystal structure of the UCHL5 catalytic domain (UCH-domain) was determined and compared with that of other UCHs. PMID: 19836345

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Database Links

HGNC: 19678

OMIM: 610667

KEGG: hsa:51377

STRING: 9606.ENSP00000356425

UniGene: Hs.145469

Protein Families
Peptidase C12 family
Subcellular Location
Cytoplasm. Nucleus. Note=Associates with the proteasome 19S subunit in the cytoplasm. Associates with the INO80 complex in the nucleus.

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