Porcine TNF a Bioactive Protein Product Attributes
Product Type: Bioactive Protein
Recombinant TNF a based upon sequence from Porcine
Host: QP10884 protein expressed in E. Coli.
Available Tags: Untagged
Protein Construction: A cDNA sequence encoding the sequence of TNF a was constructred and used to recombinantly synthesize the protein.
Recommended Applications: Bioactive
Recommended Reconstitution Instructions: It is recommended to reconstitute the lyophilized Tumor Necrosis Factor-alpha in sterile 18MΩ.cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.
Bioactivity Data: The ED50 as determined by the cytotoxicity of porcine PK15 cells was found to be 0.001-0.015 ng/ml.
Amino Acid Sequence: MSTESMIRDV ELAEEALAKK AGGPQGSRRC LCLSLFSFLL VAGATTLFCL LHFEVIGPQK EEFPAGPLSI NPLAQGLRSS SQTSDKPVAH VVANVKAEGQ LQWQSGYANA LLANGVKLKD NQLVVPTDGL YLIYSQVLFR GQGCPSTNVF LTHTISRIAV SYQTKVNLLS AIKSPCQRET PEGAEAKPWY EPIYLGGVFQ LEKDDRLSAE INLPDYLDFA ESGQVYFGII AL
Purity: Greater than 95.0% as determined by:(a) Analysis by RP-HPLC. (b) Analysis by SDS-PAGE.
Concentration of Porcine TNF a Protein: Protein quantitation was carried out by two independent methods:1. UV spectroscopy at 280 nm using the absorbency value of 1.26 as the extinction coefficient for a 0.1% (1 mg/ml) solution. This value is calculated by the PC GENE computer analysis program of protein sequences (IntelliGenetics). 2. Analysis by RP-HPLC, using a calibrated solution of TNF-a as a Reference Standard.
Endotoxin Levels: < 1.0 EU per ug protein as determined by the LAL method.
Buffer: The protein was lyophilized with no additives.
Storage Conditions: Lyophilized Tumor Necrosis Factor-a although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution TNF-a 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.
Limitations and Performance Guarantee
enQuire Bio's products are guaranteed and approved for RESEARCH USE ONLY or manufacturing purposes. This product may not be used as a pharmaceutical agent, or other product intended for human consumption without meeting additional regulatory requirements. This product is guaranteed to work for a period of two years when stored at -70C or colder, and one year when aliquoted and stored at -20C.
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