Canine SCF/c-kit Ligand Biotinylated Antibody

Catalog # Availability Size / Price Qty
BAF2278
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Canine SCF/c-kit Ligand Biotinylated Antibody Summary

Species Reactivity
Canine
Specificity
Detects canine SCF/c‑kit Ligand in ELISAs and Western blots. In sandwich immunoassays, less than 20% cross‑reactivity with recombinant feline SCF is observed, less than 8% cross-reactivity with recombinant human SCF is observed, and less than 0.5% cross‑reactivity with recombinant mouse SCF is observed.
Source
Polyclonal Goat IgG
Purification
Antigen Affinity-purified
Immunogen
E. coli-derived recombinant canine SCF/c‑kit Ligand
Lys26-Ala190
Accession # Q06220
Formulation
Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein.
Label
Biotin

Applications

Recommended Concentration
Sample
Western Blot
0.1 µg/mL
Recombinant Canine SCF/c-kit Ligand (Catalog # 2278-SC)

Canine SCF/c-kit Ligand Sandwich Immunoassay

Recommended Concentration
Reagent
ELISA Detection (Matched Antibody Pair)
0.1-0.4 µg/mL 

Use in combination with:

Capture Reagent: Canine SCF/c‑kit Ligand Antibody (Catalog # AF2278)

Standard: Recombinant Canine SCF Protein (Catalog # 2278-SC)

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

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Preparation and Storage

Reconstitution
Reconstitute at 0.2 mg/mL in sterile PBS.
Reconstitution Buffer Available
Reconstitution Buffer 1 (PBS)
Catalog #
Availability
Size / Price
Qty
RB01
Shipping
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: SCF/c-kit Ligand

Canine SCF (stem cell factor; also known as c‑kit ligand) is a type I transmembrane (TM) glycoprotein that plays an important role in a number of fetal and adult developmental processes (1‑4). It is synthesized as a 274 amino acid (aa) precursor that contains a 25 aa signal sequence, a 190 aa extracellular region, a 23 aa TM segment and a 36 aa cytoplasmic tail (5). Within the extracellular region there are four potential N‑linked glycosylation sites, two intrachain disulfide bonds, and four alpha ‑helices. Although the predicted molecular weight is 19 kDa, the native molecule is anywhere from 28‑40 kDa in size and reflects both N‑ and O‑linked glycosylation (1). Glycosylation is not necessary for bioactivity (6). The transmembrane form of SCF can be cleaved proteolytically, generating a 165 aa soluble form. Circulating SCF exists as both a monomer and nondisulfide‑linked homodimer, with monomer predominating (50% to 75%) (6). Both the soluble and TM forms have bioactivity. Their principal targets may be different, however (7). A second, alternate splice short form of SCF has been identified in other species (1). It is membrane bound but lacks the proteolytic cleavage site found in the long form. Thus, it cannot give rise to a soluble molecule. No such isoform has been reported for canine, but it could be assumed to exist. The ratio of long form to short form varies from tissue to tissue (1). Soluble canine SCF shares 88%, 93%, 86%, 83%, 76%, 76%, 86% and 88% aa sequence identity with porcine, feline, bovine, human, mouse, rat, goat and equine SCF, respectively. Cells known to express SCF include endothelial cells, fibroblasts and keratinocytes (1).

References
  1. Broudy, V.C. (1997) Blood 90:1345.
  2. Nakagawa, S. and T. Kitoh (2000) Curr. Opin. Hematol. 7:133.
  3. Yoshida, H. et al. (2001) J. Invest. Dermatol. Symp. Proc. 6:1.
  4. Kang, J. and S.D. Der (2004) Curr. Opin. Immunol. 16:180.
  5. Dunham, S.P. and D.E. Onions (1996) DNA Seq. 6:233.
  6. Hsu, Y-R. et al. (1997) J. Biol. Chem. 272:6406.
  7. Kapur, R. et al. (1998) Blood 91:879.
Long Name
Stem Cell Factor
Entrez Gene IDs
4254 (Human); 17311 (Mouse); 60427 (Rat); 403507 (Canine); 493937 (Feline)
Alternate Names
c-kit Ligand; DKFZp686F2250; familial progressive hyperpigmentation 2; FPH2; KIT ligand; Kitl; KITLG; KL-1; Mast cell growth factor; MGF; MGFSHEP7; SCF; SCFStem cell factor; SFc-Kit ligand; SLF; steel factor

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