Estrogen Inducible Protein pS2 / TFF1 Antibody

SKU: orb639951

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.

Images & Validation

• Tested Applications: IHC-P
• Dilution range: Immunohistochemistry (FFPE): 1-2ug/ml (not suitable for frozen tissues)
• Reactivity: Human
• Application Notes:
  Optimal dilution of the antibody should be determined by the researcher.

Key Properties

• Antibody Type: Primary Antibody
• Host: Mouse
• Clonality: Recombinant
• Isotype: Mouse IgG1, kappa
• Clone No.: rTFF1/1091
• Immunogen: A recombinant full-length human protein was used as the immunogen for this recombinant pS2 antibody. Its epitope is located in the c-terminal region of human pS2 protein.
• Conjugation: Unconjugated

Storage & Handling

• 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.
• Disclaimer: For research use only

IHC staining of FFPE human breast carcinoma with recombinant pS2 antibody (clone rTFF1/1091). HIER: boil tissue sections in pH9 10mM Tris with 1mM EDTA for 20 min and allow to cool before testing.

SDS-PAGE analysis of purified, BSA-free recombinant pS2 antibody (clone rTFF1/1091) as confirmation of integrity and purity.

Quick Database Links

UniProt

P04155