E. coli-derived human NM23-H1 protein Ala2-Glu152 with a C-terminal 6-His tag
>95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
<0.10 EU per 1 μg of the protein by the LAL method.
N-terminal sequence Analysis
Predicted Molecular Mass
18-20 kDa, under reducing conditions
Measured by its ability to convert thymidine diphosphate and adenosine triphosphate to thymidine triphosphate and adenosine diphosphate in a coupled assay. The specific activity is >50,000 pmol/min/μg, as measured under the described conditions.
Recombinant Human NM23-H1 His-tag Protein, CF Scientific Data Examples
Recombinant Human NM23-H1 His-tag Protein Enzyme Activity
Recombinant Human NM23-H1 His-tag (Catalog # 10495-NM) is measured by its ability to convert thymidine diphosphate and adenosine triphosphate to thymidine triphosphate and adenosine diphosphate in a coupled assay.
Formulation, Preparation and Storage
What does CF mean?
CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our
Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant
protein to be stored at a more dilute concentration.
The carrier free version does not contain BSA.
What formulation is right for me?
In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or
as an ELISA standard.
In contrast, the carrier free protein is recommended for applications, in which the presence of BSA
Supplied as a 0.2 μm filtered solution in Tris, NaCl and TCEP.
The product is shipped with dry ice or equivalent. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage:
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
6 months from date of receipt, -20 to -70 °C as supplied.
3 months, -20 to -70 °C under sterile conditions after opening.
Non-metastatic Protein 23 Homolog 1 (NM23-H1), also known as Nucleoside diphosphate kinase A (NDPK-A), is a group 1 member of the NDPK family encoded by the NME1 (non metastatic cell) gene (1). NDPKs are well-known as housekeeping genes that maintain the balance of nucleoside triphosphate levels by transferring a phosphate group from a nucleoside triphosphate to nucleoside diphosphate. NM23-H1 is a cytosolic protein that forms active hexamers composed of a trimer of dimers (2,3). The active hexamer contains a "head" region with substrate binding and catalytic activity as well as a Kpn loop and C-terminal extensions that stabilize the structure (2,3). NM23-H1 (NDPK-A) shares significant homology with NM23-H2 (NDPK-B), with 88% identity (3). In spite of significant homology and catalytic function between these isoforms, the differing amino acids on the lateral surface of the hexamers lead to specific interactions with other proteins and ultimately result in diverging cellular distribution and function in cells (1). NM23-H1 was the first reported metastasis suppressor gene (4) and plays a role in cell adhesion, migration and motility, and signaling and proteolysis (5-7). Suppression activity has been demonstrated in many cancers although the mechanism involved is uncertain (1,7). NM23-H2 has been reported to have several functions: enzymatic function as a protein histidine kinase with ATP-citrate lyase and annexin A1 as direct targets (5), exonuclease activity (8), NDPK activity (1), and also forms a complex with the cystic fibrosis transmembrane conductance regulator (CFTR) (9) in regulation of chloride channels, other signaling pathways, and gene regulation (1,10,11).
Boissan, M. et al. (2018) Lab. Invest. 98:164.
Janin, J. et al. (2000) J. Bioenerg. Biomembr. 32:215.
Webb, P.A. et al. (1995) J. Mol. Biol. 251:574.
Steeg, P.S. et al. (1988) J. Natl. Cancer Inst. 80:200.
Attwood, P.V. et al. (2018) Lab. Invest. 98:283.
Khan, I. et al. (2019) Cancer Res. 79:4689.
Matyasi, B. et al. (2020) Pathol. Oncol. Res. 26:49.
Fan, Z. et al. (2003) Cell 112:659.
Borthwick, L.A. et al. (2016) PloS One. 11:e0149097.
Ma, W. et al. (2008) Biochem. Biophys. Res. Commun. 371:425.
Zheng, S. et al. (2019) FEBS Lett. 593:80.
Non-metastatic Protein 23 Homolog 1
Entrez Gene IDs
EC 220.127.116.11, GAAD, Granzyme A-activated DNase, Metastasis inhibition factor nm23, NB, NBS, NDK A, NDKA, NDP kinase A, NDPK-A, NDPKA, NM23-H1, NM23A, NM23AWD, NM23H1, NME1, Tumor metastatic process-associated protein, non-metastatic cells 1, protein (NM23A) expressed in, nucleoside diphosphate kinase A
Citations for Recombinant Human NM23-H1 His-tag Protein, CF
Which Brands are Currently Available on bio‑techne.com? R&D Systems, Tocris Bioscience and ProteinSimple branded products are available to purchase through bio‑techne.com. ProteinSimple branded instruments are available to quote. ACD branded products will be available on bio‑techne.com in the near future. Novus Biologicals branded products are not currently available on bio‑techne.com and can be found at novusbio.com.
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