Exalpha Biologicals, Inc.

Accelerating the Pace of Discovery

Product Highlight

Mouse anti-M13 phage coat protein g8p

Antibodies recognising M13 filamentous phage coat proteins are instrumental in the selection and detection of phages expressing specific antibody fragments or peptide sequences at their surface. The monoclonal antibodies manufactured and supplied by Exalpha react with either the pIII (g3p) or pVIII (g8p) proteins of M13 filamentous bacteriophage. All antibodies are available in a purified format. The antibodies are fully validated and are suitable for a wide range of techniques including:

  • Flow Cytometry
  • Western Blot
  • Immunohistochemistry
  • Immunoprecipitation
For more information, click here for our M13 Bacteriophage information page.


Two more of our excellent products have been published by PubMed:

Potential actionable targets in appendiceal cancer detected by immunohistochemistry, fluorescent in situ hybridization, and mutational analysis
Borazanci, E., et al., J. Gastrointest. Oncol., 8, 164-172 (2017)
Using Exalpha SPARC Antibody (Cat. No. X1867P)

Molecular mechanism underlying the pharmacological interactions of the protein kinase C-β inhibitor enzastaurin and erlotinib in non-small cell lung cancer cells
Steen, N.V., et al., Am. J. Cancer Res., 7, 816-830 (2017)
Using Exalpha's FITC labeled anti PY20 Antibody (Cat. No. X1017)

Exalpha Biologicals, Inc.

MEG-1 (637-926)/PTPN4 N-Terminal GST Tag

  • Product Code: X1661E
  • Size: 20 µg
  • Price (USD): $361

Cat #

X1661E		 Quantity:      

Data Sheet

Product Name

MEG-1 (637-926)/PTPN4 N-Terminal GST Tag





Product Type

Active Enzyme




Useful for the study of enzyme kinetics, regulation, to dephosphorylate target substrates and for screening inhibitors.


20 µg

Price (USD)



MEG-1, also know as Serine/threonine phosphatase 4 regulatory subunit 1, PPP4R1 or PP4R1 is crucial to cellular function. The catalytic subunit of MEG-1 or protein phosphatase 4 (PP4C) is 65% identical to PP2AC at the amino acid level and has been placed in the type 2A family of phosphatases. MEG-1 has been highly conserved between species sharing 91% amino acid identity between human and Drosophila. MEG-1 is predominantly localized in the nucleus in rat brain and liver but is most highly expressed in testis. MEG-1 is an essential enzyme in the development of Drosophila embryos.


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

60.3 kDa

Database Links:



[1] Kloeker S., Wadzinski B.E.; Purification and identification of a novel subunit of protein serine/threonine phosphatase 4.; J. Biol. Chem. 274:5339-5347(1999).
[2] Wada T., Miyata T., Inagi R., Nangaku M., Wagatsuma M., Suzuki D., Wadzinski B.E., Okubo K., Kurokawa K.; Cloning and characterization of a novel subunit of protein serine/threonine phosphatase 4 from mesangial cells.; J. Am. Soc. Nephrol. 12:2601-2608(2001).
[3] Zhang X, Ozawa Y, Lee H, Wen YD, Tan TH, Wadzinski BE, Seto E. Histone deacetylase 3 (HDAC3) activity is regulated by interaction with protein serine/threonine phosphatase 4.
Genes Dev. 2005 Apr 1;19(7):827-39.
[4] Kloeker S, Wadzinski BE. Purification and identification of a novel subunit of protein serine/threonine phosphatase 4. J Biol Chem. 1999 Feb 26;274(9):5339-47.