Human Smad2 Antibody

Catalog #: AF4037 Datasheet / COA / SDS

Catalog #	Availability	Size / Price	Qty
AF4037
AF4037-SP

Smad2 in Human Pancreatic Cancer Tissue.

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Human Smad2 Antibody Summary

Species Reactivity

Human

Specificity

Detects human Smad2 in direct ELISAs.

Source

Polyclonal Goat IgG

Purification

Antigen Affinity-purified

Immunogen

E. coli-derived recombinant human Smad2
Lys20-Thr108
Accession # Q15796

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

Immunohistochemistry

5-15 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

Immunohistochemistry

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Smad2 in Human Pancreatic Cancer Tissue. Smad2 was detected in immersion fixed paraffin-embedded sections of human pancreatic cancer tissue using Goat Anti-Human Smad2 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF4037) at 5 µg/mL overnight at 4 °C. Tissue was stained using the Anti-Goat HRP-DAB Cell & Tissue Staining Kit (brown; Catalog # CTS008) and counterstained with hematoxylin (blue). Specific staining was localized to nuclei. View our protocol for Chromogenic IHC Staining of Paraffin-embedded Tissue Sections.

Reconstitution Calculator

Preparation and Storage

Reconstitution

Sterile PBS to a final concentration of 0.2 mg/mL.

Shipping

Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store 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: Smad2

SMAD2 (Sma and MAD-related protein 2; also MAD2, MADR2 and MADH2) is a 58-62 kDa member of the dwarfin/SMAD family of proteins. It is widely expressed, particularly in striated muscle, and exists constitutively in the cytoplasm. SMAD2 is a downstream mediator of TGF-beta and activin signaling. In particular, SMAD2 is a nonphosphorylated monomer in unstimulated cells. Upon ALK-4, -5, and -7 receptor activation, SMAD2 is phosphorylated and forms either homotrimers or heterotrimers with SMAD3 and SMAD4. These heterotrimers enter the nucleus and initiate gene transcription. Human SMAD2 is 467 amino acids (aa) in length. It contains one regulatory MH domain (aa 120-176) and a transactivation MH domain (aa 274-467). There are at least five utilized phosphorylation sites and one acetylation site at Lys19 that promotes transcriptional activity. There are four potential isoform variants. One shows a deletion of aa 79-108, while another contains the same deletion coupled to another deletion of aa 219-243. A third shows a deletion of aa 344-358, and a fourth is missing aa 221-225. Over aa 20-108, human SMAD2 shares 98% aa identity with mouse SMAD2.

Long Name

Mothers Against DPP Homolog 2

Entrez Gene IDs

4087 (Human); 17126 (Mouse); 29357 (Rat); 31738 (Drosophila)

Alternate Names

hMAD-2; hSMAD2; JV18; JV18-1; JV18-1SMAD, mothers against DPP homolog 2 (Drosophila); MAD homolog 2; Mad protein homolog; Mad, mothers against decapentaplegic homolog 2; MADH2; MADH2MGC34440; MADR2; MADR2MGC22139; Mad-related protein 2; mother against DPP homolog 2; mothers against decapentaplegic homolog 2; Mothers against DPP homolog 2; Sma- and Mad-related protein 2; SMAD 2; SMAD family member 2MAD, mothers against decapentaplegic homolog 2 (Drosophila); SMAD, mothers against DPP homolog 2; Smad2; Smox