Human IGSF3 Antibody

  
  • Species Reactivity
    Human
  • Specificity
    Detects human IGSF3 in direct ELISAs and Western blots. In direct ELISAs and Western blots, less than 5% cross-reactivity with recombinant human (rh) IGSF4B, rhIGSF4C, and rhIGSF8 is observed.
  • Source
    Polyclonal Sheep IgG
  • Purification
    Antigen Affinity-purified
  • Immunogen
    Mouse myeloma cell line NS0-derived recombinant human IGSF3
    Gln20-Ala1125
    Accession # AAI10652
  • Formulation
    Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
  • Label
    Unconjugated
Applications
  •  
    Recommended
    Concentration
    Sample
  • Western Blot

    Human lung tissue under non-reducing conditions only

  • Flow Cytometry
    2.5 µg/106 cells
    See below
  • CyTOF-ready
    Ready to be labeled using established conjugation methods. No BSA or other carrier proteins that could interfere with conjugation.
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.
Data Examples
Detection of IGSF3 in A549 Human Cell Line by Flow Cytometry. A549 human lung carcinoma cell line was stained with Sheep Anti-Human IGSF3 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF4788, filled histogram) or control antibody (Catalog # 5-001-A, open histogram), followed by NorthernLights™ 557-conjugated Anti-Sheep IgG Secondary Antibody (Catalog # NL010).
Detection of Human IGSF3 by Western Blot. Western blot shows lysates of human lung tissue. PVDF membrane was probed with 1 µg/mL of Sheep Anti-Human IGSF3 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF4788) followed by HRP-conjugated Anti-Sheep IgG Secondary Antibody (Catalog # HAF016). A specific band was detected for IGSF3 at approximately 200 kDa (as indicated). This experiment was conducted under non-reducing conditions and using Immunoblot Buffer Group 1.
Preparation and Storage
  • Reconstitution
    Reconstitute at 0.2 mg/mL in sterile PBS.
  • 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: IGSF3

IGSF3 (Immunoglobulin superfamily member 3; also EWI-3) is a 133 kDa (predicted) member of the EWI subfamily of the Ig-Superfamily of molecules. It is reported to be widely expressed, with concentration in placenta and lung. Human IGSF3 an 1194 amino acid (aa) type I transmembrane protein that contains a 19 aa signal sequence followed by an 1175 aa mature region (aa 20-1194) (SwissProt # O75054). The molecule's extracellular region is 1105 aa in length (aa 20-1124), and contains eight C2-type Ig-like domains (aa 22-1097). This region also possesses at least two utilized phosphorylation sites at Thr617and Ser625, plus an EWI motif in the second Ig-like domain. IGSF3 likely exists as a disulfide-linked homodimer. There are two potential isoform variants. One contains a 20 aa insertion after Pro406, while another shows the same insert coupled to a premature truncation after Pro833. GenBank Accession # AAI10652 is identical to the SwissProt sequence above save for a double Glu substitution for Asp1020 in the eighth Ig-like domain. Over aa 20‑1125, human IGSF3 shares 92% aa identity with mouse IGSF3.

  • Long Name:
    Immunoglobulin Superfamily, Member 3
  • Entrez Gene IDs:
    3321 (Human); 78908 (Mouse); 295325 (Rat)
  • Alternate Names:
    EWI-3; glu-Trp-Ile EWI motif-containing protein 3; IGSF3; immunoglobulin superfamily, member 3; member 3; V8
Related Research Areas
Isotype Controls
Description Application Cat# Citations Images  

Normal Sheep IgG Control

Ctrl 5-001-A 9
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Secondary Antibodies
Description Application Cat# Citations Images  

Sheep IgG HRP-conjugated Antibody

WB, Simple Western HAF016 14  
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Donkey Anti-Sheep IgG NorthernLights™ NL557-conjugated Antibody

Flow, IHC, ICC NL010 3
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Donkey Anti-Sheep IgG NorthernLights™ NL637-conjugated Antibody

Flow, IHC, ICC NL011 5
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Donkey Anti-Sheep IgG NorthernLights™ NL493-conjugated Antibody

Flow, IHC, ICC NL012 2
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Donkey Anti-Sheep IgG Biotinylated Antibody

WB BAF016 2
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Sheep IgG (H+L) PE-conjugated Antibody

Flow F0126  
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Sheep IgG (H+L) APC-conjugated Antibody

Flow F0127  
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Sheep IgG VisUCyte HRP Polymer Antibody

IHC VC006  
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Donkey Anti-Sheep IgG (H+L) Fluorescein-conjugated Antibody

Flow F0125 1
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Donkey Anti-Sheep IgG (H+L) PerCP-conjugated Antibody

Flow F0128
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