Estrogen Inducible Protein pS2 / TFF1 Antibody

• Catalog Number: orb1825362
• Category: Antibodies
• Description: It recognizes a polypeptide of 6.5kDa, identified as pS2 estrogen-regulated protein. Its epitope is located in the c-terminus of human pS2 protein. pS2 is a trefoil peptide. Trefoil peptides are protease resistant molecules secreted throughout the gut that play a role in mucosal healing. These peptides contain three intra-chain disulfide bonds, forming the trefoil motif, or P-domain. pS2 is known to form dimers and this dimerization is thought to play a role in its protective and healing properties. About 60% of breast carcinomas are positive for pS2. Staining is cytoplasmic, often with localization to the Golgi apparatus. pS2 is shown to be localized in normal stomach mucosa, gastric fluid, goblet cells in the colon and small intestine, and in ulcerations of the gastrointestinal tract. Several studies have shown that pS2 is primarily expressed in estrogen receptor-positive breast tumors and it may define a subset of estrogen-dependent tumors that displays an increased likelihood of response to endocrine therapy.
• Clonality: Recombinant
• Species/Host: Rabbit
• Isotype: Rabbit IgG, kappa
• Conjugation: Unconjugated
• Reactivity: Human
• Immunogen: A recombinant partial protein sequence (within amino acids 1-84) from the human protein was used as the immunogen for the recombinant Estrogen Inducible Protein pS2 antibody.
• UniProt ID: P04155
• Tested applications: IHC-P
• Dilution range: Immunohistochemistry (FFPE): 1-2ug/ml for 30 minutes at RT
• Antibody Type: Primary Antibody
• Clone Number: TFF1/8817R
• Formula: 0.2 mg/ml in 1X PBS with 0.1 mg/ml BSA (US sourced), 0.05% sodium azide
• Storage: Maintain refrigerated at 2-8°C for up to 2 weeks. For long term storage store at -20°C in small aliquots to prevent freeze-thaw cycles.
• Note: For research use only

IHC staining of FFPE human colon tissue with recombinant Estrogen Inducible Protein pS2 antibody (clone TFF1/8817R). HIER: boil tissue sections in pH9 10 mM Tris with 1 mM EDTA for 20 min and allow to cool before testing.

IHC staining of FFPE human colon tissue with recombinant Estrogen Inducible Protein pS2 antibody (clone TFF1/8817R). Inset: PBS used in place of primary Ab (secondary Ab negative control). HIER: boil tissue sections in pH9 10 mM Tris with 1 mM EDTA for 20 min and allow to cool before testing.

SDS-PAGE analysis of purified, BSA-free recombinant Estrogen Inducible Protein pS2 antibody (clone TFF1/8817R) as confirmation of integrity and purity.