Recombinant Human Lupus La protein (SSB), Homo sapiens (Human), E.coli, N-terminal 6xHis-SUMO-tagged, 62.8kDa, purity >90% as determined by SDS-PAGE.

Recombinant Human Lupus La protein (SSB)

Recombinant Human Lupus La protein (SSB) — Binds to the 3′ poly(U) terminus of nascent RNA polymerase III transcripts, protecting them from exonuclease digestion and facilitating their folding and maturation. Purity >90%.

SKU: BCRECP-001699 Category:
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Product Specifications

Product SkuBCRECP-001699
Product DescriptionRecombinant Human Lupus La protein (SSB) Protein is expressed from E.coli with N-terminal 6xHis-SUMO-tagged. It contains 1-408aa. [Accession | P05455].
Uniprot No.P05455
Gene NamesSSB
PurityGreater than 90% as determined by SDS-PAGE.
Expression SystemE.coli
Expression Region1-408aa
SpeciesHomo sapiens (Human)
Tag InfoN-terminal 6xHis-SUMO-tagged
Molecular weight62.8kDa
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 AreasEpigenetics and Nuclear Signaling

Function

Binds to the 3' poly(U) terminus of nascent RNA polymerase III transcripts, protecting them from exonuclease digestion and facilitating their folding and maturation. In case of Coxsackievirus B3 infection, binds to the viral internal ribosome entry site (IRES) and stimulates the IRES-mediated translation.

Biological Context

Subcellular Location: Nucleus

Product Specifications

Recombinant Human Lupus La protein (SSB) is a recombinant protein from Homo sapiens (Human), expressed in E.coli, covering amino acids 1-408aa, with N-terminal 6xHis-SUMO-tagged tag, molecular weight 62.8kDa, 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

Binds to the 3' poly(U) terminus of nascent RNA polymerase III transcripts, protecting them from exonuclease digestion and facilitating their folding and maturation (PubMed:2470590, PubMed:3192525). In case of Coxsackievirus B3 infection, binds to the viral internal ribosome entry site (IRES) and stimulates the IRES-mediated translation (PubMed:12384597)

Subcellular Location

Nucleus

Subunit

Interacts with DDX15. May interact with RUFY1

Gene: SSB  |  Organism: Homo sapiens  |  Synonyms: La autoantigen; La ribonucleoprotein; Sjoegren syndrome type B antigen
Key Publications

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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