Buffer Formulation	20mM Tris, 150mM NaCl, pH8.0, containing 1mM EDTA, 1mM DTT, 0.01% SKL, 5% Trehalose and Proclin300.
Traits	Freeze-dried powder
Purity	> 90%
Isoelectric Point	10.7
Applications	Cell culture; Activity Assays.

ACTIVITY TEST

Fibroblast Growth Factor-18 (FGF18) is a trophic factor for mature chondrocytes
and their progenitors. It has been reported to have significant anabolic effects on
cartilage. FGF18 plays a central role in skeletal growth and
development.Besides,Fibroblast Growth Factor Receptor 3 (FGFR3) has been
identified as an interactor of FGF18, thus a binding ELISA assay was conducted
to detect the interaction of recombinant human FGF18 and recombinant human
FGFR3. Briefly, FGF18 were diluted serially in PBS, with 0.01% BSA (pH 7.4).
Duplicate samples of 100μl were then transferred to FGFR3-coated microtiter
wells and incubated for 2h at 37℃. Wells were washed with PBST and incubated
for 1h with anti-FGF18 pAb, then aspirated and washed 3 times. After incubation
with HRP labelled secondary antibody, wells were aspirated and washed 3 times.
With the addition of substrate solution, wells were incubated 15-25 minutes at
37℃. Finally, add 50µl stop solution to the wells and read at 450nm immediately.
The binding activity of FGF18 and FGFR3 was shown in Figure 1, and this effect
was in a dose dependent manner.

 

USAGE

 

Reconstitute in 20mM Tris, 150mM NaCl (PH8.0) to a concentration of 0.1-1.0 mg/mL. Do not vortex.

 

STORAGE

 

Avoid repeated freeze/thaw cycles. Store at 2-8°C for one month. Aliquot and store at -80°C for 12 months.

 

STABILITY

 

The thermal stability is described by the loss rate. The loss rate was determined by accelerated thermal degradation test, that is, incubate the protein at 37°C for 48h, and no obvious degradation and precipitation were observed. The loss rate is less than 5% within the expiration date under appropriate storage condition.

 

Image


Figure. SDS-PAGE

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