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Recombinant Human PlGF

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Product Source Size Cat. No. Price
Recombinant Human PlGF E. coli25 µg Z102615 $90.00
100 µg Z102617 $220.00
1.0 mg Z102619 $1,850.00
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Data Sheet
Print Version
Alternative Names PGF, PGLF
Description Human PlGF, or Placental Growth Factor, is part of the PDGF/VEGF family and contains the 8 cysteine residues conserved in the family. It can be alternately spliced into three different mature forms. PGF is typically found as a disulfide linked dimer which is highly glycosylated. It is a key molecule involved in vasculogenesis and angiogenesis, especially during embryogenesis. It also induces the activation of monocytes, as well as their migration and production of inflammatory cytokines. It is primarily expressed by the placental trophoblast during pregnancy, but is also expressed in villious trophoblasts, decidual cells, erythroblasts, keratinocytes, and somewhat in endothelial cells. PGF signals by binding VEGF R1, and competes with VEGF for binding. Recombinant PlGF is a 15.0 kDa protein.
Gene Symbol PGF
Gene ID 5228
Accession No. P49763
Source E. coli
Appearance Lyophilized Powder
Molecular Weight 15.0 kDa
Endotoxin Level <1.0 EU/μg of recombinant protein as determined by the LAL method
Purity >95% as determined by SDS-PAGE
Gel Image Click To Enlarge
Bioactivity Not available yet
Bioactivity Data Click To Enlarge
Formulation Lyophilized from a 0.2 µm filtered solution in Citrate, phosphate and NaCl (pH 4.0)
Reconstitution A quick spin of the vial followed by reconstitution in PBS to a concentration not less than 0.1 mg/mL. This solution can then be diluted into other buffers.
Storage The lyophilized protein is stable for at least one year from date of receipt at -70°C. Upon reconstitution, this cytokine can be stored in working aliquots at 2° - 8°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.
Usage For research use only. Not for diagnostic or therapeutic use.
Product Documents
Product References
FAQs
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How are endotoxin levels measured?
1. For estimating the endotoxin levels; we use the LAL (Limulus Amebocyte Lysate) method: The lysate from horseshoe crab amebocytes clots in the presence of very low endotoxin. This reaction is the basis of the Limulus amebocyte lysate (LAL) assay which was approved by the FDA in 1970.

· Endotoxin is generally measured in Endotoxin Units per milliliter (EU/mL).

· For recombinant proteins: EU is reported per microgram of protein.

· One EU = 0.1-0.2 ng endotoxin/µg of protein.

· At abm, we do the LAL chromogenic assays that can detect down to 0.01 EU/ml.
With regard to the BSA levels in some Growth Factors and Cytokines, can you please provide an explanation as to why they are so high?
The amount of BSA, as part of the formulation of a protein, can vary considerably depending on how much BSA was deemed optimum/necessary for protein stability in combination with /in-lieu of - other possible additives. The aforementioned formulations are somewhat analogous to the “carrier” versions of many formulations from “R and D systems” that have as high as 50 µg of BSA per µg of the recombinant protein product. If, needed or desired, abm scientists can substitute BSA for other stabilizing additives for most formulations.
Are your Escherichia coli sourced growth factors: 1) Human derived materials free? 2) Recombinant proteins free?
Yes, all of abm's growth factors made in Escherichia coli using recombinant technology contain no human derived-products or other recombinant proteins. In the rare cases of BSA presence, this will be mentioned in the product's formulation.