Optimized DNA sequence encoding Human PEDF mature chain was expressed in Escherichia Coli.
Native human PEDF, generated by the proteolytic removal of the signal peptide and propeptide, the molecule has a calculated molecular mass of approximately 45kDa. Recombinant PEDF is a monomer protein consisting of 400 amino acid residue subunits,and migrates as an approximately 45kDa protein under reducing conditions in SDS-PAGE.
>95%, as determined by SDS-PAGE and HPLC
The ED(50) was not determined.
MQALVLLLCI GALLGHSSCQ NPASPPEEGS PDPDSTGALV EEEDPFFKVP VNKLAAAVSN FGYDLYRVRS STSPTTNVLL SPLSVATALS ALSLGAEQRT ESIIHRALYY DLISSPDIHG TYKELLDTVT APQKNLKSAS RIVFEKKLRI KSSFVAPLEK SYGTRPRVLT GNPRLDLQEI NNWVQAQMKG KLARSTKEIP DEISILLLGV AHFKGQWVTK FDSRKTSLED FYLDEERTVR VPMMSDPKAV LRYGLDSDLS CKIAQLPLTG SMSIIFFLPL KVTQNLTLIE ESLTSEFIHD IDRELKTVQA VLTVPKLKLS YEGEVTKSLQ EMKLQSLFDS PDFSKITGKP IKLTQVEHRA GFEWNEDGAG TTPSPGLQPA HLTFPLDYHL NQPFIFVLRD TDTGALLFIG KILDPRGP
Endotoxin content was assayed using a LAL gel clot method. Endotoxin level was found to be less than.1 ng/µg(1EU/µg).
Recombinant PEDF was lyophilized from a.2 μm filteredmM PB,150mM NaCl solution pH.5.
A quick spin of the vial followed by reconstitution in distilled water to a concentration not less than.1 mg/mL. This solution can then be diluted into other buffers.
The lyophilized protein is stable for at least years from date of receipt at -20° C. Upon reconstitution, this cytokine can be stored in working aliquots at° -° C for one month, or at -20° C for six months, with a carrier protein without detectable loss of activity. Avoid repeated freeze/thaw cycles.
This cytokine product is for research purposes only.It may not be used for therapeutics or diagnostic purposes.