Recombinant Human UBE2K (UBC1) Protein
Beta LifeScience
SKU/CAT #: BL-0125SG
Recombinant Human UBE2K (UBC1) Protein
Beta LifeScience
SKU/CAT #: BL-0125SG
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Product Overview
Tag | His |
Host Species | Human |
Accession | NM_005339 |
Synonym | E2-25K; HIP2; HYPG; LIG; UBC1 |
Background | UBE2K also known as UBC1 or ubiquitin-conjugating enzyme E2K belongs to the ubiquitin-conjugating enzyme family which interacts with RING finger proteins. UBE2K can ubiquitinate huntingtin, the gene product for Huntington's disease. Huntingtin is ubiquitinated in peripheral cells, suggesting a role for UBE2K in the degradation of huntingtin. UBE2K plays a role in aggregate formation of expanded polyglutamine proteins and the suppression of apoptosis in polyglutamine diseases. UBE2K also plays a role in the dislocation of newly synthesized MHC class I heavy chains from the endoplasmic reticulum, and involvement in foam cell formation. |
Description | Recombinant full-length human UBE2K was produced in E. coli system, fused with a His tag at N-terminus. |
Source | E.coli |
AA Sequence | Full Length |
Molecular Weight | 26 kDa |
Purity | For specific purity information on a given lot, see related COA. |
Endotoxin | < 1.0 EU per μg of the protein as determined by the LAL method |
Bioactivity | Active |
Formulation | Recombinant protein is supplied in 50mM Tris-HCl, pH 7.5, 50mM NaCl, 10mM Glutathione, 0.25mM DTT, 0.1mM EDTA, 0.1mM PMSF and 25% glycerol. |
Stability | The recombinant protein is stable for up to 12 months at -70°C |
Usage | For Research Use Only |
Storage | Recombinant Human UBE2K (UBC1) Protein should be stored should be stored at < -70°C. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles. |
Target Details
Target Function | Accepts ubiquitin from the E1 complex and catalyzes its covalent attachment to other proteins. In vitro, in the presence or in the absence of BRCA1-BARD1 E3 ubiquitin-protein ligase complex, catalyzes the synthesis of 'Lys-48'-linked polyubiquitin chains. Does not transfer ubiquitin directly to but elongates monoubiquitinated substrate protein. Mediates the selective degradation of short-lived and abnormal proteins, such as the endoplasmic reticulum-associated degradation (ERAD) of misfolded lumenal proteins. Ubiquitinates huntingtin. May mediate foam cell formation by the suppression of apoptosis of lipid-bearing macrophages through ubiquitination and subsequence degradation of p53/TP53. Proposed to be involved in ubiquitination and proteolytic processing of NF-kappa-B; in vitro supports ubiquitination of NFKB1. In case of infection by cytomegaloviruses may be involved in the US11-dependent degradation of MHC class I heavy chains following their export from the ER to the cytosol. In case of viral infections may be involved in the HPV E7 protein-dependent degradation of RB1. |
Subcellular Location | Cytoplasm. |
Protein Families | Ubiquitin-conjugating enzyme family |
Database References | |
Tissue Specificity | Expressed in all tissues tested, including spleen, thymus, prostate, testis, ovary, small intestine, colon, peripheral blood leukocytes, T-lymphocytes, monocytes, granulocytes and bone marrow mononuclear cells. Highly expressed in brain, with highest leve |
Gene Functions References
- The crystal structure of a Ube2K~ubiquitin conjugate has been described, and it was shown that even though it is monomeric, Ube2K can synthesize Lys48-linked ubiquitin chains. PMID: 26592444
- Hip2, a ubiquitin-conjugating enzyme, can overcome radiation-induced G2/M cell cycle arrest and trigger the entry into mitosis. PMID: 23933584
- An extract of bark from the tropical rainforest plant Byrsonima crassifolia was screened for inhibition of diubiquitin formation by the human ubiquitin-conjugating enzyme E2-25K. PMID: 22164771
- one of the roles of the C-terminal UBA domain, in the context of E2-25K, is to increase processivity in Lys48-linked polyubiquitin chain synthesis, possibly through increased binding to the ubiquitinated substrate. PMID: 21281599
- Results suggest that the interaction between E2-25K and UBB(+1) is critical for the synthesis and accumulation of UBB(+1)-anchored polyubiquitin, which results in proteasomal inhibition and neuronal cell death. PMID: 20826778
- This study suggests that Hip2 might be involved in the regulation of Smac-mediated apoptosis. PMID: 20537984
- Results suggest that in permeabilized, US11-expressing cells polyubiquitination of the MHC class I heavy chain substrate can be catalyzed by E2-25K. PMID: 16868077
- E2-25K is involved in aggregate formation of expanded polyglutamine proteins and polyglutamine-induced cell death. PMID: 17092742