Mouse pS2 / pNR-2 / Trefoil Factor 1 Monoclonal Antibody | anti-TFF1 antibody

pS2 / pNR-2 / Trefoil Factor 1 (Estrogen-Regulated Protein) Mouse Monoclonal Antibody

Cat. Num. AAA439584

• Gene Names: TFF1; pS2; BCEI; HPS2; HP1.A; pNR-2; D21S21
• Reactivity: Human, Cynomolgus Monkey.; Others not known
• Applications: Flow Cytometry, Functional Assay, Immunofluorescence, Immunohistochemistry
• Synonyms: pS2 / pNR-2 / Trefoil Factor 1; Monoclonal Antibody; pS2 / pNR-2 / Trefoil Factor 1 (Estrogen-Regulated Protein) Mouse Monoclonal Antibody; BCEI; Breast Cancer Estrogen Inducible Protein; Gastrointestinal Trefoil Protein; Gastrointestinal trefoil protein pS2; HP1A; HPS2; pNR2; TFF1; Trefoil Factor 1; anti-TFF1 antibody

• Host: Mouse
• Reactivity: Human, Cynomolgus Monkey.; Others not known
• Clonality: Monoclonal
• Isotype: IgG1, kappa
• Clone Number: SPM313
• Specificity: It recognizes a polypeptide of 6.5kDa, identified as pS2 estrogen-regulated protein. Its epitope is localized between aa57-84 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.
• Form/Format: 200ug/ml of Ab purified from Bioreactor Concentrate by Protein A/G. Prepared in 10mM PBS with 0.05% BSA & 0.05% azide. Also available WITHOUT BSA & azide at 1.0mg/ml.
• Sequence Length: 84

• Applicable Applications for anti-TFF1 antibody: Flow Cytometry (FC/FACS), Immunofluorescence (IF), Immunohistochemistry (IHC) Formalin
• Application Notes: Flow Cytometry (0.5-1ug/million cells in 0.1ml); Immunofluorescence (0.5-1ug/ml); Immunohistochemistry (Formalin-fixed) (0.5-1.0ug/ml for 30 minutes at RT) (Staining of formalin-fixed tissues requires boiling tissue sections in 10mM Citrate Buffer, pH 6.0, for 10-20 min followed by cooling at RT for 20 minutes)
• Cellular Localization: Cytoplasmic
• Immunogen: Synthetic peptide of 28 amino acid residues corresponding to CFDDTVRGVPWCFYPNTIDVPPEEECEF (aa57-84) from the C-terminus of human pS2.
• Hu-Chromosome Location: 16p11.2
• Positive Control: Spent medium of MCF-7 cells, treated with estrogen. Normal stomach. About 60% of breast carcinomas are positive for pS2, especially those that are also positive for estrogen and/or progesterone receptor.
• Preparation and Storage: Antibody with azide - store at 2 to 8 degree C. Antibody without azide - store at -20 to -80 degree C. Antibody is stable for 24 months. Non-hazardous. No MSDS required.

Immunohistochemistry (IHC)

(Formalin-fixed, paraffin-embedded human Ovarian Carcinoma stained with pS2 Monoclonal Antibody (SPM313).)

References

Williams R, et. al. Human Pathology, 1996, 27(12):1259-66

NCBI and Uniprot Product Information

• NCBI GI #: 4507451
• NCBI GeneID: 7031
• NCBI Accession #: NP_003216.1
• NCBI GenBank Nucleotide #: NM_003225.2
• UniProt Accession #: P04155
• Molecular Weight: 6.5kDa
• NCBI Official Full Name: trefoil factor 1
• NCBI Official Synonym Full Names: trefoil factor 1
• NCBI Official Symbol: TFF1
• NCBI Official Synonym Symbols: pS2; BCEI; HPS2; HP1.A; pNR-2; D21S21
• NCBI Protein Information: trefoil factor 1
• UniProt Protein Name: Trefoil factor 1
• Protein Family: Trefoil factor
• UniProt Gene Name: TFF1
• UniProt Synonym Gene Names: BCEI; PS2; hP1.A
• UniProt Entry Name: TFF1_HUMAN

NCBI Description

Members of the trefoil family are characterized by having at least one copy of the trefoil motif, a 40-amino acid domain that contains three conserved disulfides. They are stable secretory proteins expressed in gastrointestinal mucosa. Their functions are not defined, but they may protect the mucosa from insults, stabilize the mucus layer, and affect healing of the epithelium. This gene, which is expressed in the gastric mucosa, has also been studied because of its expression in human tumors. This gene and two other related trefoil family member genes are found in a cluster on chromosome 21. [provided by RefSeq, Jul 2008]

Uniprot Description

TFF1: Stabilizer of the mucous gel overlying the gastrointestinal mucosa that provides a physical barrier against various noxious agents. May inhibit the growth of calcium oxalate crystals in urine.

Protein type: Secreted, signal peptide; Secreted

Chromosomal Location of Human Ortholog: 21q22.3

Molecular Function: protein binding

Biological Process: carbohydrate metabolic process