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Recombinant Human Trophoblast glycoprotein (TPBG), partial (Active)

Recombinant Human Trophoblast glycoprotein (TPBG), partial (Active)

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Code	CSB-MP024093HUb0
Abbreviation	Recombinant Human TPBG protein, partial (Active)
MSDS	MSDS Datasheet
Size	$9.9
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Image	(Tris-Glycine gel) Discontinuous SDS-PAGE (reduced) with 5% enrichment gel and 15% separation gel. Activity Measured by its binding ability in a functional ELISA. Immobilized Human TPBG at 2 μg/mL can bind Anti-TPBG recombinant antibody (CSB-RA024093MA1HU), the EC₅₀ is 1.230-1.519 ng/mL.
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Target Background

Product Details

Purity

Greater than 95% as determined by SDS-PAGE.

Endotoxin

Less than 1.0 EU/ug as determined by LAL method.

Activity

Measured by its binding ability in a functional ELISA. Immobilized Human TPBG at 2 μg/mL can bind Anti-TPBG recombinant antibody (CSB-RA024093MA1HU), the EC50 is 1.230-1.519 ng/mL.

Target Names

TPBG

Uniprot No.

Q13641

Research Area

Cancer

Alternative Names

(5T4 oncofetal antigen)(5T4 oncofetal trophoblast glycoprotein)(5T4 oncotrophoblast glycoprotein)(M6P1)(Wnt-activated inhibitory factor 1)(WAIF1)

Molecular Characterization

Species

Homo sapiens (Human)

Source

Mammalian cell

Expression Region

32-355aa

Target Protein Sequence

SSPTSSASSFSSSAPFLASAVSAQPPLPDQCPALCECSEAARTVKCVNRNLTEVPTDLPAYVRNLFLTGNQLAVLPAGAFARRPPLAELAALNLSGSRLDEVRAGAFEHLPSLRQLDLSHNPLADLSPFAFSGSNASVSAPSPLVELILNHIVPPEDERQNRSFEGMVVAALLAGRALQGLRRLELASNHFLYLPRDVLAQLPSLRHLDLSNNSLVSLTYVSFRNLTHLESLHLEDNALKVLHNGTLAELQGLPHIRVFLDNNPWVCDCHMADMVTWLKETEVVQGKDRLTCAYPEKMRNRVLLELNSADLDCDPILPPSLQTS

Mol. Weight

38.9 kDa

Protein Length

Partial

Tag Info

N-terminal 10xHis-tagged

Form

Lyophilized powder
Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand.

Buffer

Lyophilized from a 0.2 μm filtered 20 mM Tris-HCl, 0.5 M NaCl, 6% Trehalose, pH 8.0

Reconstitution

We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. Our default final concentration of glycerol is 50%. Customers could use it as reference.

Troubleshooting and FAQs

Protein FAQs

Storage Condition

Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.

Shelf Life

The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.

Lead Time

Basically, we can dispatch the products out in 3-7 working days after receiving your orders. Delivery time may differ from different purchasing way or location, please kindly consult your local distributors for specific delivery time.

Notes

Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.

Datasheet & COA

Please contact us to get it.

Description

TPBG (5T4) is a leucine-rich repeat glycoprotein overexpressed in numerous solid tumors while largely absent from healthy adult tissues, making it a high-value target in immuno-oncology antibody development and tumor biology research. This recombinant human TPBG ectodomain (aa 32–355) is expressed in mammalian cells to preserve native-like glycosylation critical for proper folding and receptor-antibody interactions. Functional ELISA confirms robust binding activity, with immobilized TPBG at 2 μg/mL engaging an anti-TPBG recombinant antibody at an EC₅₀ of 1.230–1.519 ng/mL, providing a suitable basis for antibody screening, epitope binning, and SPR-based affinity measurements. Purity exceeding 95% by SDS-PAGE combined with endotoxin levels below 1.0 EU/μg satisfies the criteria typical for cell-based functional assays investigating Wnt signaling modulation and for use as a reliable reference standard in immunoassay development.

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Target Background

Function

May function as an inhibitor of Wnt/beta-catenin signaling by indirectly interacting with LRP6 and blocking Wnt3a-dependent LRP6 internalization.

Gene References into Functions

In extravillous trophoblasts, 5T4 may function in epithelial-to-mesenchymal transition during placentation. The role of syncytiotrophoblast 5T4 is unknown, but its abundance in shed syncytial vesicles may signify route of sensitization of the maternal immune system. PMID: 28481180
Collectively, these findings demonstrate that an anti-5T4 antibody-drug conjugate reduces the fraction of cancer stem cells (CSC), and prevents local recurrence and suggest a novel therapeutic approach for patients with head and neck squamous cell carcinoma. PMID: 27780858
We obtained GWS evidence (P < 2.7 x 10(-6)) for gene-based association in the total sample with a novel locus, TPBG (P = 1.8 x 10(-6)). PMID: 28183528
In conclusion, the present study provided evidence that TPBG is involved in PDAC metastasis, and that TPBG and its associated signaling pathways may be a suitable target for pancreatic ductal adenocarcinoma therapy. PMID: 25738465
5T4 expression is mechanistically associated with the directional movement of cells through epithelial mesenchymal transition, facilitation of CXCL12/CXCR4 chemotaxis, blocking of canonical Wnt/beta-catenin while favouring non-canonical pathway signalling PMID: 25066861
Tyrosine 325 plus the leucine-rich repeat 1 surface centered on a second exposed aromatic residue, phenylalanine 97, are essential for inhibition of Wnt/beta-catenin signaling. PMID: 24582434
The surface expression of 5T4 marks the use of the CXCR4 rather than the CXCR7 receptor, with distinct consequences for CXCL12 exposure. PMID: 22956548
5T4 is a potential new antigen for targeted therapies such as immunotherapy in MPM, as it is overexpressed on mesothelioma cells and recognised by 5T4-specific cytotoxic T-cells. PMID: 22498111
Glycosylation and epitope mapping of the 5T4 glycoprotein oncofoetal antigen PMID: 11903056
Results sugest that 5T4 is a transient marker of human embryonic stem cell differentiation & that 5T4 phenotype, colony seeding density and culture conditions influence the maintenance of pluripotent hES cells and their differentiation to neural lineages. PMID: 16616918
there is a repertoire of CD8 T cell recognition of 5T4 in normal human donors and some candidate HLA-A*0201 epitopes have been identified PMID: 16646078
the mRNA expression of trophoblast glycoprotein is up-regulated in cells circulating within blood from women with preeclampsia. PMID: 17978129
5T4-based cancer vaccine: cytotoxic T lymphocyte epitopes identified in Trovax-vaccinated colorectal cancer patients PMID: 18567615
colorectal cancer patients who had preexisting cell proliferative responses to 5T4 were longer-term survivors PMID: 18833005

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Subcellular Location

Cell membrane; Single-pass type I membrane protein.

Tissue Specificity

Expressed by all types of trophoblasts as early as 9 weeks of development. Specific for trophoblastic cells except for amniotic epithelium. In adult tissues, the expression is limited to a few epithelial cell types but is found on a variety of carcinoma.

Database Links

HGNC: 12004

OMIM: 190920

KEGG: hsa:7162

STRING: 9606.ENSP00000358765

UniGene: Hs.71947

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