Recombinant Pseudomonas putida RNA polymerase sigma factor RpoS (rpoS), Pseudomonas putida (strain ATCC 47054 / DSM 6125 / CFBP 8728 / NCIMB 11950 / KT2440), E.coli, N-terminal 10xHis-tagged, 44.2kDa, purity >90% as determined by SDS-PAGE.

Recombinant Pseudomonas putida RNA polymerase sigma factor RpoS (rpoS)

Recombinant Pseudomonas putida RNA polymerase sigma factor RpoS (rpoS) — Sigma factors are initiation factors that promote the attachment of RNA polymerase to specific initiation sites and are then released. Purity >90%.

SKU: BCRECP-004292 Category:
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Product Specifications

Product SkuBCRECP-004292
Product DescriptionRecombinant Pseudomonas putida RNA polymerase sigma factor RpoS (rpoS) Protein is expressed from E.coli with N-terminal 10xHis-tagged. It contains 1-335aa. [Accession | Q88ME8].
Uniprot No.Q88ME8
Gene NamesrpoS
PurityGreater than 90% as determined by SDS-PAGE.
Expression SystemE.coli
Expression Region1-335aa
SpeciesPseudomonas putida (strain ATCC 47054 / DSM 6125 / CFBP 8728 / NCIMB 11950 / KT2440)
Tag InfoN-terminal 10xHis-tagged
Molecular weight44.2kDa
ActivityPlease contact us to obtain bioactivity data.
BufferIf 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.
StorageStore at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
Research AreasOthers

Function

Sigma factors are initiation factors that promote the attachment of RNA polymerase to specific initiation sites and are then released. This sigma factor is the master transcriptional regulator of the stationary phase and the general stress response.

Biological Context

Subcellular Location: Cytoplasm

Product Specifications

Recombinant Pseudomonas putida RNA polymerase sigma factor RpoS (rpoS) is a recombinant protein from Pseudomonas putida (strain ATCC 47054 / DSM 6125 / CFBP 8728 / NCIMB 11950 / KT2440), expressed in E.coli, covering amino acids 1-335aa, with N-terminal 10xHis-tagged tag, molecular weight 44.2kDa, purity Greater than 90% as determined by SDS-PAGE.. Suitable for ELISA and Western Blot applications.

SDS-PAGE: Single band at expected molecular weight confirming purity.

ELISA: Suitable as coating antigen or detection standard.

Western Blot: Compatible with standard Western Blot protocols.

Protein Interaction: Validated for SPR (Surface Plasmon Resonance) and BLI (Bio-Layer Interferometry) studies.

Shipping: Shipped at ambient temperature. Lyophilized protein is stable during transit.

Storage: Store lyophilized protein at -20°C to -80°C. Reconstituted protein should be aliquoted and stored at -80°C. Avoid repeated freeze-thaw cycles.

Shelf Life: 12 months from date of receipt when stored as recommended.

Shipping Time: Orders placed before 2 PM EST ship same day. International orders typically deliver within 5-10 business days.

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Protein Biology

Function

Sigma factors are initiation factors that promote the attachment of RNA polymerase to specific initiation sites and are then released. This sigma factor is the master transcriptional regulator of the stationary phase and the general stress response

Subcellular Location

Cytoplasm

Subunit

Interacts with the RNA polymerase core enzyme

Gene: rpoS  |  Organism: Pseudomonas putida (strain ATCC 47054 / DSM 6125 / CFBP 8728 / NCIMB 11950 / KT2440)  |  Synonyms: Sigma S; Sigma-38

Frequently Asked Questions

How do I order or inquire about this product?

Fill out the Online Inquiry form with your required quantity and specifications. You can also email sales@biocrestsci.com. Our team typically responds within 4 business hours with a quote and availability confirmation.

What is the shipping and delivery time?

Orders placed before 2 PM EST ship the same day. Domestic (US) delivery typically takes 2-3 business days. International orders deliver within 5-10 business days. All products are shipped at ambient temperature with appropriate packaging to ensure stability.

How should I store this recombinant protein?

Lyophilized proteins should be stored at -20°C to -80°C upon receipt. After reconstitution, aliquot and store at -80°C. Avoid repeated freeze-thaw cycles. Shelf life is 12 months from date of receipt when stored as recommended.

What quality controls are performed on your products?

Each product undergoes SDS-PAGE purity analysis (typically >85-95%), endotoxin testing, and bioactivity validation. Products are validated for ELISA, Western Blot, and SPR/BLI applications as specified on this product page. A Certificate of Analysis (CoA) is available upon request.

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