Western blot shows lysates of A172 human glioblastoma cell line and human cortex tissue. PVDF membrane was probed with 1 µg/mL of Sheep Anti-Human/Mouse PEA‑15 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF5588) followed by HRP-conjugated Anti-Sheep IgG Secondary Antibody (Catalog # HAF016). A specific band was detected for PEA‑15 at approximately 15 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 8.
PEA‑15 in Human Brain.
PEA‑15 was detected in immersion fixed paraffin-embedded sections of human brain (cortex) using Sheep Anti-Human/Mouse PEA‑15 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF5588) at 1 µg/mL overnight at 4 °C. Tissue was stained using the Anti-Sheep HRP-DAB Cell & Tissue Staining Kit (brown; Catalog # CTS019) and counterstained with hematoxylin (blue). Specific staining was localized to neurons. View our protocol for Chromogenic IHC Staining of Paraffin-embedded Tissue Sections.
Preparation and Storage
Reconstitute at 0.2 mg/mL in sterile PBS.
Reconstitution Buffer Available
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.
PEA-15 (Phosphoprotein Enriched in Astrocytes of 15 kDa) is a 15 kDa cytoplasmic protein that regulates cell proliferation and apoptosis. It is expressed in multiple cell types such as astrocytes; skeletal muscle and adipocytes. Human PEA-15 is 130 amino acids (aa) in length. It contains a death effector domain (aa 3‑81), plus two regulatory Ser phosphorylation sites. In a quiescent cell, it is either non-phosphorylated or constitutively phosphorylated at Ser116. Non-phosphorylated PEA-15 binds ERK, inhibiting cell proliferation. Phosphorylation at Ser116 promotes PEA-15 binding to FADD, blocking apoptosis. And activation-induced phosphorylation at Ser104 blocks PEA-15 binding to ERK, promoting cell proliferation. There is one potential alternate start site 21 aa upstream of the standard start site, and a second isoform that shows an Asn substitution for aa 36‑58. Full-length human and mouse PEA-15 show 99% aa identity.
Phosphoprotein Enriched in Astrocytes 15
Entrez Gene IDs:
8682 (Human); 18611 (Mouse); 364052 (Rat)
HMAT1; HMAT115kD; HUMMAT1H; MAT1H; PEA15; PEA-15; PED; PED15 kDa phosphoprotein enriched in astrocytes; phosphoprotein enriched in astrocytes 15; Phosphoprotein enriched in diabetes
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