Catalogue number
PRO-347
Synonyms
Keratin type II cytoskeletal 8, Cytokeratin-8, CK-8, Keratin-8, K8, KRT8, CYK8, KO, CK8, K2C8, CARD2.
Introduction
Keratin 8 and 18 (K8/18) are the major components of intermediate filament (IF) proteins of simple or single-layered epithelia.
Description
Cytokeratin 8 Human Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain having a molecular mass of 53,532 Dalton.
The KRT8 is purified by proprietary chromatographic techniques.
Source
Escherichia Coli.
Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
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.
Solubility
It is recommended to reconstitute the lyophilized KRT8 in sterile 18MΩ-cm H2O not less than 100μg/ml, which can then be further diluted to other aqueous solutions.
Stability
Lyophilized KRT8 although stable at room temperature for 3 weeks, should be stored at 2-8°C. Upon reconstitution KRT8 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.
Purity
Greater than 95.0% as determined by:
(a) Analysis by RP-HPLC.
(b) Analysis by SDS-PAGE.
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).
References
1.Title:Role for the PP2A/B56
Phosphatase in Regulating 14-3-3 Release from Cdc25 to Control Mitosis.
Publication:Copyright
2006 Elsevier Inc. All rights reserved.Cell,
Volume 127, Issue 4, 759-773, 17 November 2006 doi:10.1016/j.cell.2006.10.035
Link:http://www.cell.com/retrieve/pii/S0092867406014139?cc=y
2.
Title:Role for the PP2A/B56? Phosphatase in Regulating 14-3-3 Release from Cdc25 to Control Mitosis.
Publication:
Received 3 May 2006. Revised 23 August 2006. Accepted 9 October 2006. Available online 16 November 2006. Published: November 16, 2006.
Link:http://www.sciencedirect.com/science/article/pii/S0092867406014139
Safety Data Sheet
Usage
Prospec'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.
