Recombinant Human S100B Protein

Name: Recombinant Human S100B Protein
Brand: Novus Biologicals
SKU: NBP3-07106

Novus Biologicals, part of Bio-Techne | Catalog # NBP3-07106

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Product Specifications
Preparation & Storage
Background
Product Documents
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Key Product Details

Source

E. coli

Conjugate

Unconjugated

Applications

Bioactivity

View all S100B Proteins and Enzymes »

Product Specifications

Description

A single non-glycosylated polypeptide chain containing 91 amino acids corresponding to S100B Source: E. coli

Amino Acid Sequence: SELEKAMVAL IDVFHQYSGR EGDKHKLKKS ELKELINNEL SHFLEEIKEQ EVVDKVMETL DNDGDGECDF QEFMAFVAMV TTACHEFFEH E

Purity

>95%, by SDS-PAGE

Endotoxin Level

Less than 1.0 EU/ug of S100B as determined by LAL method.

Predicted Molecular Mass

10.6 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.

Activity

Biological activity measured in a cell proliferation assay using human peripheral blood monocytes. The ED50 for this effect is 1-4 ug/mL.

Protein / Peptide Type

Recombinant Protein

Formulation, Preparation and Storage

NBP3-07106

Formulation	Lyophilized from a 0.2 mm filtered concentrated solution in PBS (pH 7.4).
Preservative	No Preservative
Concentration	Lyoph
Reconstitution	Briefly centrifuge vial prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1% BSA to 0.1-1.0 mg/mL. Stock solutions should be apportioned into working aliquots and stored at -20C.
Shipping	The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage	Store at -20 to -70C as supplied. After reconstitution, store at 2 to 8C for 1 month and at -20 to -70C for long term storage. Avoid repeated freeze-thaw cycles.

Background: S100B

S100B is a zinc- and calcium-binding protein belonging to the S100 protein family within the EF-hand (helix E-loop-helix F) subgroup (1,2). S100B plays a role in normal central nervous system development, is associated with various neurological diseases such as Alzheimer's and Parkinson's, and it serves as a marker for brain injury (1,2). The S100B protein has a homodimeric structure comprised of two 91-amino acid polypeptide monomers each with a theoretical molecular weight of 10.5 kDa (1,2). Furthermore, each monomer contains two EF-hand regions, four helixes, and a hinge region (2). S100B is predominately expressed in astrocytes, oligodendrocytes, and Schwann cells, but also other cell types including adipocytes (1,3). S100B interacts with toll-like receptor 4 (TLR4) and receptor for advanced glycation end products (RAGE), initiating downstream signaling cascades and transcription factors including JNK/JUN, NFkappaB, and p38, leading to caspase and proinflammatory cytokine production (2). Overall outcomes include neuronal apoptosis, neuroinflammation, and neurodegeneration (1,2). S100B is the most commonly studied astroglia and blood brain barrier biomarker in traumatic brain injury (TBI) (3,4). The serum levels of S100B in patients with TBI is indicative of patient outcomes, where high levels correlate with injury severity and mortality (4). S100B is often in used in combination with additional biomarkers such as glial fibrillary acidic protein (GFAP) and ubiquitin c-terminal hydrolase L1 (UCH-L1) (3,4).

References

1. Yardan, T., Erenler, A. K., Baydin, A., Aydin, K., & Cokluk, C. (2011). Usefulness of S100B protein in neurological disorders. JPMA. The Journal of the Pakistan Medical Association, 61(3), 276-281.

2. Langeh, U., & Singh, S. (2021). Targeting S100B Protein as a Surrogate Biomarker and its Role in Various Neurological Disorders. Current neuropharmacology, 19(2), 265-277. https://doi.org/10.2174/1570159X18666200729100427

3. Thelin, E. P., Nelson, D. W., & Bellander, B. M. (2017). A review of the clinical utility of serum S100B protein levels in the assessment of traumatic brain injury. Acta neurochirurgica, 159(2), 209-225. https://doi.org/10.1007/s00701-016-3046-3

4. Wang, K. K., Yang, Z., Zhu, T., Shi, Y., Rubenstein, R., Tyndall, J. A., & Manley, G. T. (2018). An update on diagnostic and prognostic biomarkers for traumatic brain injury. Expert review of molecular diagnostics, 18(2), 165-180. https://doi.org/10.1080/14737159.2018.1428089

Long Name

S100 Calcium Binding Protein B

Alternate Names

beta (neural), NEF, S100, S100 beta, S100 calcium binding protein B, S100 calcium-binding protein B, S100 calcium-binding protein, beta (neural), S-100 calcium-binding protein, beta chain, 10protein S100-B, S-100 protein beta chain, S-100 protein subunit beta, S100beta

Gene Symbol

S100B

Additional S100B Products

Product Documents for Recombinant Human S100B Protein

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COA

Product Specific Notices for Recombinant Human S100B Protein

This product is for research use only and is not approved for use in humans or in clinical diagnosis. This product is guaranteed for 1 year from date of receipt.

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