Recombinant Human Proteasome subunit beta type-4 (PSMB4)

SKU:BHP10501694
Overview
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Recombinant PSMB4 Human protein produced in E. coli, N-terminal GST-tagged spanning 46-264aa. Suitable for binding assays, functional studies, and assay development.
Expression System E. coli
Tag N-terminal GST-tagged
Purity Greater
Species Human
Molecular Weight 51.4 kDa
Options selector
Catalog no. Size
CSB-RP013744h-1MG 1 mg
CSB-RP013744h-100UG 100 ug
CSB-RP013744h-20UG 20 ug
Available Options

Select the variant that best fits your experiment. Availability and lead time may vary by option.

  • Options: Size (3) - 1 mg, 100 ug, 20 ug
  • Lead time: Made to Order — production begins after purchase. Lead time is typically 13-23 business days.
  • Storage: 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℃/-80℃. The shelf life of lyophilized form is 12 months at -20℃/-80℃.
  • Shipping: cold-chain shipment (typically with ice packs).
  • Upon receipt: store at recommended temperature as soon as possible.
  • Sales terms and conditions: Please review prior to ordering.
Field Specification
Mfr No CSB-RP013744h
Activity
  • Not Test
Alternative Names 26KDA prosomal protein ;HsBPROS26 ;PROS-26Macropain beta chain;Multicatalytic endopeptidase complex beta chain;Proteasome beta chain;Proteasome chain 3 ;HsN3
Endotoxin Level Not test
Expression System
  • E. coli
Form Liquid or Lyophilized powder
Function
  • 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.
Molecular Weight 51.4 kDa
Product Type
  • Recombinant Protein
Purity Greater than 90% as determined by SDS-PAGE.
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℃/-80℃. Our default final concentration of glycerol is 50%. Customers could use it as reference.
Species Homo sapiens (Human)
Storage 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℃/-80℃. The shelf life of lyophilized form is 12 months at -20℃/-80℃.
UniProt # P28070

Scientific Background

The proteasome is a multicatalytic proteinase complex which is characterized by its ability to cleave peptides with Arg, Phe, Tyr, Leu, and Glu adjacent to the leaving group at neutral or slightly basic pH. The proteasome has an ATP-dependent proteolytic activity. Mediates the lipopolysaccharide-induced signal macrophage proteasome.

Product Description

E. coli Expression

Recombinant Human Proteasome subunit beta type-4 (PSMB4) is a recombinant protein expressed in E. coli and purified to Greater than 90% as determined by SDS-PAGE. as determined by SDS-PAGE. Supplied as Liquid or Lyophilized powder, n-terminal gst-tagged. For research use only.

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℃/-80℃. Our default final concentration of glycerol is 50%. Customers could use it as reference.

Protein Specifications

Molecular Weight 51.4 kDa
Expression Region 46-264aa
Expression System E. coli
Tag N-terminal GST-tagged
Purity Greater than 90% as determined by SDS-PAGE.
Form Liquid or Lyophilized powder
Storage Buffer If the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0.
Endotoxin Level Not test
UniProt Accession P28070
Storage 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℃/-80℃. The shelf life of lyophilized form is 12 months at -20℃/-80℃.

Safety & Handling

For Research Use Only (RUO). Not intended for diagnostic or therapeutic use. Handle as potentially biohazardous material. Follow your institution's biosafety guidelines when working with recombinant proteins.

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What expression system was used to produce this protein?

This recombinant protein is expressed in E. coli, a widely used system for producing soluble, biologically active proteins at scale. The E. coli expression platform enables efficient folding and high yields, suitable for functional and binding assays.

What is the tag and purity of this product?

This protein is supplied as N-terminal GST-tagged and has been purified to Greater than 90% as determined by SDS-PAGE. as determined by SDS-PAGE. High purity minimizes interference in downstream assays, particularly in cell-based bioactivity studies and ELISA development.

How should I reconstitute and store this product?

Briefly centrifuge the vial before opening. Reconstitute in sterile deionized water to 0.1–1.0 mg/mL. For long-term storage, add 5–50% glycerol and store in aliquots at -20°C or -80°C to avoid repeated freeze-thaw cycles. 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℃/-80℃. The shelf life of lyophilized form is 12 months at -20℃/-80℃.

Is this protein biologically active?

Biological activity data are available in the product datasheet. Please contact our support team for activity specifications relevant to your specific application.

What applications is this recombinant protein suitable for?

This recombinant protein is suitable for a range of in vitro research applications including binding assays, protein–protein interaction studies, cell proliferation/bioactivity assays, ELISA standard curve calibration, and assay development. Confirm suitability for your specific assay conditions with the product datasheet.

We offer flexible ordering options including bulk quantities, custom formulations, and endotoxin removal services for many of our recombinant proteins. Lead times and minimum order quantities vary by product. For custom conjugation, specialized buffer formulations, or volume pricing, please contact our support team. All customization requests are handled in partnership with our manufacturing suppliers and are subject to feasibility review.

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