pS2 Antibody / TFF1

SKU: orb2642322

Description

It recognizes a polypeptide of 6.5kDa, identified as pS2 estrogen-regulated 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. It 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.

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Tested Applications	IHC-P
Dilution Range	The prediluted format is supplied in a dropper bottle and is optimized for use in IHC. After epitope retrieval step (if required), drip mAb solution onto the tissue section and incubate at RT for 30 min.
Reactivity	Human
Application Notes	The optimal dilution of the pS2 antibody for each application should be determined by the researcher.1. The prediluted format is supplied in a dropper bottle and is optimized for use in IHC. After epitope retrieval step (if required), drip mAb solution onto the tissue section and incubate at RT for 30 min.

Key Properties

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Antibody Type	Primary Antibody
Host	Mouse
Clonality	Monoclonal
Isotype	Mouse IgG2b, kappa
Clone No.	TFF1/2133
Immunogen	Recombinant human protein was used as the immunogen for this pS2 antibody.
Purification	Protein G affinity chromatography
Conjugation	Unconjugated

Storage & Handling

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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.
Buffer/Preservatives	Prediluted in 1X PBS, 0.1 mg/ml rAlbumin, 0.05% sodium azide; For IHC use only
Expiration Date	12 months from date of receipt.
Disclaimer	For research use only

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IHC staining of FFPE human breast carcinoma with pS2 antibody (clone TFF1/2133). HIER: boil tissue sections in pH9 10 mM Tris with 1 mM EDTA for 20 min and allow to cool before testing.

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UniProt

P04155

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Protocol Information

IHC-P

Immunohistochemistry Paraffin

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