Recombinant Human PEDF protein

SKU: CD01140

Size:5 ug

Background:Pigment epithelium-derived factor (PEDF) is encoded by the SERPINF1 gene in humans and found in verebrates. It is a secreted phosphoglycoprotein that belongs to the clade F subfamily, serpin superfamily of proteinase inhibitors. The PEDF is a noninhibitory serpin with neurotrophic, anti-angiogenic, and anti-tumorigenic properties. It is synthesized as a 418 a.a. about 50 kDa precursor that contains a 19 a.a. signal sequence and a 399 a.a. mature region that shows a pyroglutamate at Gln20. Like other serpins, it contains three β-sheets, 810 α-helices, and a C-terminal RCL (reactive center loop). Unlike other serpins with Ser protease inhibiting activity. PEDF has functions of inducing extensive neuronal differentiation in retinoblastoma cells, inhibiting of angiogenesis. As it does not undergo the S (stressed) to R (relaxed) conformational transition characteristic of active serpins, it exhibits no serine protease inhibitory activity. PEDF is researched as a therapeutic candidate for treatment of such conditions as choroidal neovascularization, heart disease, and cancer.

Research_area:Immunology

Purity:> 97 % by SDS-PAGE and HPLC analyses.

Source:Escherichia coli.

Full product name:Recombinant Human Pigment Epithelium-derived Factor

Biological activity:Fully biologically active when compared to standard. The ED5 as determined by its ability to enhance the adhesion of human Saos2 cells to bovine Collagen I coated plate is less than 2 ng/ml, corresponding to a specific activity of > 5. × 15 IU/mg.

Synonyms:SERPINF1,EPC-1, OI12, OI6, PEDF, PIG35,Human

Endotoxin:Less than 1 EU/μg of rHuPEDF as determined by LAL method.

Storage:-20ºC

Sequence:QNPASPPEEG SPDPDSTGAL VEEEDPFFKV PVNKLAAAVS NFGYDLYRVR SSTSPTTNVL LSPLSVATAL SALSLGAEQR TESIIHRALY YDLISSPDIH GTYKELLDTV TAPQKNLKSA SRIVFEKKLR IKSSFVAPLE KSYGTRPRVL TGNPRLDLQE INNWVQAQMK GKLARSTKEI PDEISILLLG VAHFKGQWVT KFDSRKTSLE DFYLDEERTV RVPMMSDPKA VL

uniprot accession:P36955

Molecular weight:Approximately 44.4 KDa, a single non-glycosylated polypeptide chain containing 399 amino acids.

Formulation:

Reconstitution:Lyophilized from a .2 μm filtered concentrated solution in 2 mM PB, pH 7.4, 15 mM NaCl.