Exalpha Biologicals, Inc.

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Exalpha Biologicals, Inc. is now a US distributor for Nordic-Mubio products

Nordic-MUbio develops and manufactures high quality antibody reagents for use in R&D. All our products are manufactured according to strict ISO 9001 quality guidelines, and our focus is on developing antibodies targetting Cell Adhesion, Nuclear and Cytoskeletal Proteins.

Nordic-MUbio is one of the leading antibody companies developing antibodies for zebrafish research – we currently have over 50 antibodies validated for immunofluorescence in zebrafish.

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Akazawa, Y., et al. "Endoplasmic Reticulum Stress Contributes to Helicobacter Pylori VacA-Induced Apoptosis" PLoS ONE 8(12): e82322

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Homa, N.J., et al. "Epstein-Barr Virus Induces Global Changes in Cellular mRNA Isoform Usage That Are Important for the Maintenance of Latency" J. Virol., 2013, 87, 12291-12301

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Exalpha Biologicals, Inc.

PTPbeta (1675-1996) N Terminal GST Tag

  • Product Code: X1665E
  • Size: 20 µg
  • Availability: In Stock In Stock
  • Price (USD): $361

Cat #

X1665E		 Quantity:      

Data Sheet

Product Name

PTPbeta (1675-1996) N Terminal GST Tag



Product Type

Active Enzyme




Useful for the study of enzyme kinetics, screening inhibitors, and selectivity profiling.


20 µg

Price (USD)



PTP beta, also known as Receptor-type tyrosine-protein phosphatase beta [Precursor], Protein-tyrosine phosphatase beta,R-PTP-beta, PTPRB or PTPB is a protein tyrosine phosphatase and is overexpressed in glioblastoma tumors. PTP beta plays a n important functional role in tumor cell migration and adhesion. Glioblastomas express at least three splice variants of PTPbeta, including long and short receptor forms. The short form of PTPbeta lacks exon 12, which encodes 860 amino acids located in the extracellular domain. In normal brain tissue and graded astrocytomas the long and short PTPbeta forms have an overlapping expression pattern. U87 stable cell lines overexpressing long or short PTPbeta migrate faster and adhere more robustly than parental U87 cells. The involvement of long and short PTPbeta in glioma tumor cell biology also contributes to the value of PTPbeta as a cancer target.


Recombinant enyzme produced in E. coli


Provided in 25 mM Tris-HCl, 75 mM NaCl, pH 8.0, 0.05% Tween, 5 mM DTT and 50% glycerol

Customer Storage

Enzyme should be stored at -20°C. Enzyme should be kept on ice when dispensing

Target Molecular Weight

63.7 kDa

Database Links:



[1] Krueger N.X., Streuli M., Saito H.; Structural diversity and evolution of human receptor-like protein tyrosine phosphatases.; EMBO J. 9:3241-3252(1990).

[2] Brunner RM, Rottengatter K, Horstmann RD, Gelhaus A, Goldammer T, Foerster B, Schwerin M.
Assignment of the protein-tyrosine phosphatase beta gene (PTPRB) to cattle chromosome 5q23q24 by in situ hybridization and somatic cell panel analysis.
Cytogenet Genome Res. 2003;103(1-2):203G.

[3] Cheburkin IuV, Kniazeva TG, Peter S, Kniazev IuP, Karelin MI, Shkol'nik MI, Evtushenko VI, Hanson KP, Ullrich A, Kniazev PG. [Molecular portrait of human kidney carcinomas: the gene expression profiling of protein-tyrosine kinases and tyrosine phosphatases which controlled regulatory signals in the cells] Mol Biol (Mosk). 2002 May-Jun;36(3):480-90. Russian.

[4] Harder KW, Anderson LL, Duncan AM, Jirik FR. The gene for receptor-like protein tyrosine phosphatase (PTPRB) is assigned to chromosome 12q15-->q21. Cytogenet Cell Genet. 1992;61(4):269-70.

[5] Lorente G, Nelson A, Mueller S, Kuo J, Urfer R, Nikolich K, Foehr ED. Functional comparison of long and short splice forms of RPTPbeta: Implications for glioblastoma treatment. Neuro-oncol. 2005 Apr;7(2):154-63.