Recombinant Human DNA-directed RNA polymerase III subunit RPC1 (POLR3A), partial

SKU:BHP10500823
Overview
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Recombinant POLR3A Human protein produced in E. coli, N-terminal 6xHis-SUMO-tagged spanning 392-632aa. Suitable for binding assays, functional studies, and assay development.
Expression System E. coli
Tag N-terminal 6xHis-SUMO-tagged
Purity Greater
Species Human
Molecular Weight 43.4 kDa
Options selector
Catalog no. Size
CSB-EP018343HU-1MG 1 mg
CSB-EP018343HU-100UG 100 ug
CSB-EP018343HU-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: In Stock at Manufacturer. Lead time is typically 3-7 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-EP018343HU
Activity
  • Not Test
Alternative Names DNA-directed RNA polymerase III largest subunitDNA-directed RNA polymerase III subunit ARNA polymerase III 155KDA subunit ;RPC155RNA polymerase III subunit C160
Endotoxin Level Not test
Expression System
  • E. coli
Form Liquid or Lyophilized powder
Function
  • DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. Largest and catalytic core component of RNA polymerase III which synthesizes small RNAs
  • such as 5S rRNA and tRNAs. Forms the polymerase active center together with the second largest subunit. A single-stranded DNA template strand of the promoter is positioned within the central active site cleft of Pol III. A bridging helix emanates from RPC1 and crosses the cleft near the catalytic site and is thought to promote translocation of Pol III by acting as a ratchet that moves the RNA-DNA hybrid through the active site by switching from straight to bent conformations at each step of nucleotide addition (By similarity). Plays a key role in sensing and limiting infection by intracellular bacteria and DNA viruses. Acts as nuclear and cytosolic DNA sensor involved in innate immune response. Can sense non-self dsDNA that serves as template for transcription into dsRNA. The non-self RNA polymerase III transcripts
  • such as Epstein-Barr virus-encoded RNAs (EBERs) induce type I interferon and NF- Kappa-B through the RIG-I pathway.
Molecular Weight 43.4 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 # O14802

Scientific Background

DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. Largest and catalytic core component of RNA polymerase III which synthesizes small RNAs, such as 5S rRNA and tRNAs. Forms the polymerase active center together with the second largest subunit.

Product Description

E. coli Expression

Recombinant Human DNA-directed RNA polymerase III subunit RPC1 (POLR3A), partial 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 6xhis-sumo-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 43.4 kDa
Expression Region 392-632aa
Expression System E. coli
Tag N-terminal 6xHis-SUMO-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 O14802
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 6xHis-SUMO-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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