- Description
- Specifications
Catalog #: PRO-350
Description:
Cytokeratin 19 Human Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain having a molecular mass of 44,098 Dalton.
The KRT19 is purified by proprietary chromatographic techniques.
Synonyms:
Keratin type I cytoskeletal 19, Cytokeratin-19, CK-19, Keratin-19, K19, KRT19, CK19, K1CS, MGC15366.
Source:
Escherichia Coli.
Purity:
Greater than 95.0% as determined by SDS-PAGE.
Solubility:
It is recommended to reconstitute the lyophilized KRT19 in sterile 18MΩ–cm H2O not less than 100 µg/ml, which can then be further diluted to other aqueous solutions.
Formulation:
The protein (1mg/ml) was lyophilized after from a sterile solution containing 30mM Tris-HCl pH-8, 9.5M urea, 2mM DTT, 2mM EDTA and 10mM methylammonium chloride.
Stability:
Lyophilized KRT19 although stable at room temperature for 3 weeks, should be stored desiccated below -18 °C. Upon reconstitution KRT19 should be stored at 4 °C between 2-7 days and for future use below -18 °C.
For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).
Please prevent freeze-thaw cycles.
Physical Appearance:
Sterile Filtered White lyophilized (freeze-dried) powder.
Reconstitution to Filaments:
Performed by mixing equimolar amounts of cytokeratins of type I and type II at concentrations of approx. 0.5 mg/ml, both dissolved in 9.5 M urea buffer (see above). Protofilaments and filament complexes are obtained by dialyzing the resulting polypeptide solution stepwise to a concentration of 4 M urea and then to low salt condition (50 mM NaCl, 2 mM dithiothreitol, 10 mM Tris-HCl, pH 7.4). For immunization purposes, the solution can be further dialyzed against PBS (phosphate buffered saline, e.g. Dulbecco's PBS).
Usage:
Denovo Biotechnology's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.
