Mouse Lefty-2 Antibody

Catalog # Availability Size / Price Qty
MAB7648
MAB7648-SP

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Lefty-2 in D3 Mouse Stem Cell Line.
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Mouse Lefty-2 Antibody Summary

Species Reactivity
Mouse
Specificity
Detects mouse Lefty-2 in ELISAs. In direct ELISAs, no cross-reactivity with recombinant human Lefty-A or recombinant mouse Lefty-1 is observed.
Source
Monoclonal Rat IgG2B Clone # 836101
Purification
Protein A or G purified from hybridoma culture supernatant
Immunogen
Chinese hamster ovary cell line CHO-derived recombinant mouse Lefty-2
Phe78-Leu368
Accession # P57785
Formulation
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.

Applications

Recommended Concentration
Sample
Immunocytochemistry
8-25 µg/mL
See below

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.

Scientific Data

Immunocytochemistry Lefty-2 antibody in D3 Mouse Stem Cell Line by Immunocytochemistry (ICC). View Larger

Lefty-2 in D3 Mouse Stem Cell Line. Lefty-2 was detected in immersion fixed D3 mouse embryonic stem cell line cultured with (upper panel) or without (lower panel) Recombinant Human/Mouse/Rat Activin A (Catalog # 338-AC) using Rat Anti-Mouse Lefty-2 Monoclonal Antibody (Catalog # MAB7648) at 10 µg/mL for 3 hours at room temperature. Cells were stained using the NorthernLights™ 557-conjugated Anti-Rat IgG Secondary Antibody (red; Catalog # NL013) and counterstained with DAPI (blue). Specific staining was localized to the perinuclear region. View our protocol for Fluorescent ICC Staining of Cells on Coverslips.

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Preparation and Storage

Reconstitution
Sterile PBS to a final concentration of 0.5 mg/mL.
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Shipping
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
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: Lefty-2

Lefty-2 (Left-right determination factor 2; also Lefty-B [in human]) is a atypical member of the TGF-beta family of proteins. It is expressed during early embryogenesis in both the primitive streak and left-side lateral plate mesoderm. In the adult, Lefty-2 appears in oviduct epithelium. Lefty-2 acts in a manner reminiscent of that for Chordin and Noggin, and it is assumed that Lefty-2 is an antagonist of BMP activity. Notably, Lefty-2 and Nodal are likely under the control of Lefty-1, and thus all three molecules would appear to contribute to the creation of a left side-type body plan. Mouse Lefty-2 is synthesized as a 368 amino acid (aa) preproprecursor. It contains a 21 aa signal sequence, plus a 347 aa, 41-42 kDa bioactive proprecursor that may undergo proteolytic processing at one of two downstream cleavage sites. If cleavage occurs after Arg77, the resulting 33-34 kDa mature form (aa 78-368) is biologically inactive; if cleavage occurs after Arg135, the resulting 27-28 kDa mature form (aa 136-368) is biologically active. Lefty-2 is not a covalent homodimer and has been suggested to act as a monomer. Over aa 78-368, mouse Lefty-2 shares 94%, 83% and 95% aa sequence identity with rat Lefty-2, human Lefty-B and mouse Lefty-1, respectively.

Entrez Gene IDs
7044 (Human); 320202 (Mouse); 289316 (Rat)
Alternate Names
Ebaf; Endometrial Bleeding-Associated Factor; LEFTA; Left-Right Determination Factor 2; Left-right determination factor A; Lefty-2; LEFTYA; Protein Lefty-2; Protein Lefty-A; TGFB4; TGF-beta 4; TGF-beta-4; Transforming Growth Factor Beta-4

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