Recombinant Botulinum Neurotoxin Type C1 Light Chain, CF

R&D Systems, part of Bio-Techne | Catalog # 7379-ZN

R&D Systems, part of Bio-Techne
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Key Product Details

Source

E. coli

Accession #

P18640

Conjugate

Unconjugated

Applications

Enzyme Activity

View all BoNT-C1 Light Chain Proteins and Enzymes »

Product Specifications

Source

E. coli-derived c. botulinum BoNT-C1 Light Chain protein
Pro2-Asn428, with an N-terminal Met and 6-His tag

Purity

>70%, by SDS-PAGE under reducing conditions and visualized by Colloidal Coomassie® Blue stain at 5 μg per lane.

Endotoxin Level

<1.0 EU per 1 μg of the protein by the LAL method.

N-terminal Sequence Analysis

His

Predicted Molecular Mass

50 kDa

SDS-PAGE

44-47 kDa, reducing conditions

Activity

Measured by the cleavage of the substrate GFPuv/SNAP/VAMP in a gel-shift assay.
>40% of 1 μg substrate is cleaved by 800 ng, as measured under the described conditions.

Formulation, Preparation and Storage

7379-ZN
Formulation Supplied as a 0.2 μm filtered solution in Tris, NaCl, Tween® and Glycerol.
Shipping The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 6 months from date of receipt, -20 to -70 °C as supplied.
  • 3 months, -20 to -70 °C under sterile conditions after opening.

Background: BoNT-C1 Light Chain

Botulinum Neurotoxin Type C1 is one of the seven serotypes of Botulinum Neurotoxins (BoNTs) produced by various strains of Clostridium botulinum (1, 2). BoNTs are synthesized as inactive single chain protein precursors that are activated by proteolytic cleavage to create the light and heavy chains that are linked by a disulfide bond. The 50 kDa light chain contains the metalloprotease domain whereas the 100 kDa heavy chain contains a receptor binding domain and a domain required for translocation across the cell membrane (3). BoNTs are the most toxic protein toxins known for humans. As zinc proteases, they cleave SNARE proteins to elicit flaccid paralysis in botulism poisoning. Cleavage of the SNARE proteins results in the blocking of acetylcholine release at the neuromuscular junction (2‑4). E. coli expressed recombinant light chains are active proteases. In the absence of heavy chains, however, they lack toxicity because they cannot enter into host cells.

References

  1. Campbell, K.D. et al. (1993) J. Clin. Microbiol. 31:2255.
  2. Montecucco, C. and S. Giampietro (1993) Trends Biochem. Sci. 18:324.
  3. Turton, K. et al. (2002) Trends Biochem. Sci. 27:552.
  4. Schiavo, G. et al. (2000) Physiol. Rev. 80:717.

Long Name

Botulinum Neurotoxin Type C1 Light Chain

Alternate Names

BoNTC1 Light Chain

UniProt

P18640 (C. botulinum)

Additional BoNT-C1 Light Chain Products

Product Documents for Recombinant Botulinum Neurotoxin Type C1 Light Chain, CF

Product Datasheets

Certificate of Analysis

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Product Specific Notices for Recombinant Botulinum Neurotoxin Type C1 Light Chain, CF

Coomassie is a registered trademark of Imperial Chemical Industries Ltd. Tween is a registered trademark of ICI Americas.

For research use only

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