Product Details

Purity

Greater than 90% as determined by SDS-PAGE.

Target Names

PSMB4

Uniprot No.

P28070

Research Area

Immunology

Alternative Names

26 kDa prosomal protein; HN3; HsBPROS26; HSN3; Macropain beta chain; Multicatalytic endopeptidase complex beta chain; PROS-26; PROS26; Proteasome (prosome macropain) subunit beta type 4 ; Proteasome beta 4 subunit; Proteasome beta chain; Proteasome chain 3; Proteasome subunit beta 4; Proteasome subunit beta type 4; Proteasome subunit beta type-4; Proteasome subunit HsN3; PSB4_HUMAN; PSMB 4; PSMB4

Species

Homo sapiens (Human)

Source

E.coli

Expression Region

46-264aa

Target Protein Sequence

TQNPMVTGTSVLGVKFEGGVVIAADMLGSYGSLARFRNISRIMRVNNSTMLGASGDYADFQYLKQVLGQMVIDEELLGDGHSYSPRAIHSWLTRAMYSRRSKMNPLWNTMVIGGYADGESFLGYVDMLGVAYEAPSLATGYGAYLAQPLLREVLEKQPVLSQTEARDLVERCMRVLYYRDARSYNRFQIATVTEKGVEIEGPLSTETNWDIAHMISGFE
Note: The complete sequence including tag sequence, target protein sequence and linker sequence could be provided upon request.

Mol. Weight

51.4kDa

Protein Length

Full Length of Mature Protein

Tag Info

N-terminal GST-tagged

Form

Liquid or Lyophilized powder
Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand.

Buffer

If the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol.
Note: If you have any special requirement for the glycerol content, please remark when you place the order.
If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0.

Reconstitution

We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. Our default final concentration of glycerol is 50%. Customers could use it as reference.

Troubleshooting and FAQs

Protein FAQs

Storage Condition

Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.

Shelf Life

The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.

Lead Time

Delivery time may differ from different purchasing way or location, please kindly consult your local distributors for specific delivery time.

Notes

Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.

Datasheet & COA

Please contact us to get it.

Target Background

Function

Non-catalytic component of the 20S core proteasome complex involved in the proteolytic degradation of most intracellular proteins. This complex plays numerous essential roles within the cell by associating with different regulatory particles. Associated with two 19S regulatory particles, forms the 26S proteasome and thus participates in the ATP-dependent degradation of ubiquitinated proteins. The 26S proteasome plays a key role in the maintenance of protein homeostasis by removing misfolded or damaged proteins that could impair cellular functions, and by removing proteins whose functions are no longer required. Associated with the PA200 or PA28, the 20S proteasome mediates ubiquitin-independent protein degradation. This type of proteolysis is required in several pathways including spermatogenesis (20S-PA200 complex) or generation of a subset of MHC class I-presented antigenic peptides (20S-PA28 complex). SMAD1/OAZ1/PSMB4 complex mediates the degradation of the CREBBP/EP300 repressor SNIP1.

Gene References into Functions

High PSMB4 expression is associated with breast cancer. PMID: 30066880
PSMB4 knockdown decreased the expression levels of MMP2, MMP9 and cathepsin B and decreased proliferation, migration and invasion abilities in human GBM cells. PMID: 29414809
We further identified miR-148b as a negative regulator of proteasome beta-4 subunit. Enforced expression of miR-148b resulted in vitro growth inhibition of melanoma cells, whereas this inhibition was further abolished by enforced expression of proteasome beta-4 subunit PMID: 28656878
Our findings implied that PSMB4 is involved in the progression of EOC (epithelial ovarian cancer) and could serve as potential therapeutical target of EOC. These data suggested that PSMB4 may promote cell proliferation via the NF-kappaB-target gene in EOC (epithelial ovarian cancer) PMID: 26439929
Taken together, our results demonstrated that PSMB4 regulated MM cell growth in part by activating NF-kappaB-miR-21 signaling, which may represent promising targets for novel specific therapies. PMID: 25656574
Data indicate that recruitment of proteasomes into mutant huntingtin (mHTT) protein initiated inclusion bodies (IBs) was observed when the PSMB4-GFP was co-expressed with mHTT. PMID: 24291262
proteasome subunit beta type 4 (PSMB4), the beta7 subunit of the 20S core complex, was identified as a direct binding partner of CRBN. PMID: 23026050
While 26 proteasome dysfunction is observed in Parkinson's disease (PD), diverse mutations in the parkin gene are linked to early-onset autosomal-recessive forms of familial PD. PMID: 20810900

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Subcellular Location

Cytoplasm. Nucleus.

Protein Families

Peptidase T1B family

Database Links

HGNC: 9541

OMIM: 602177

KEGG: hsa:5692

STRING: 9606.ENSP00000290541

UniGene: Hs.89545

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Code	CSB-RP013744h
MSDS	MSDS
Size	$224
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Image	(Tris-Glycine gel) Discontinuous SDS-PAGE (reduced) with 5% enrichment gel and 15% separation gel.
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Recombinant Human Proteasome subunit beta type-4 (PSMB4)

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