recombinant expression Learn more about Antibody Enhanced Validation
technique(s)
western blot: 2-4 μg/mL using extract (cytosolic fraction) from the leaves of transgenic Nicotiana tabacum expressing E. coli NPTII
shipped in
dry ice
storage temp.
−20°C
target post-translational modification
unmodified
General description
Neomycin phosphotransferase II (NPTII) gene also known as the kanamycin-resistance marker gene, encoding for NPTII (30 kDa) an aminoglycoside 3′ -phosphotransferase II (APHII), was isolated from the E. coli transposon Tn5.
Specificity
The antibody recognizes bacterial NPTII expressed in transgenic tobacco plants.
Immunogen
synthetic peptide corresponding to amino acids 133-150 located at the mid-region of E. coli NPTII, conjugated to KLH.
Application
Anti-NPTII antibody has been used in immunoblotting.
Biochem/physiol Actions
The Neomycin phosphotransferase II (NPTII) gene confers resistance to some aminoglycoside antibiotics including neomycin and kanamycin in bacteria and plant cells and to G418 (Gibco Geneticin reagent) sulfate in mammalian cells. NPTII phosphorylates and inactivates kanamycin, preventing kanamycin from binding to the 30S ribosomal subunit to inhibit protein synthesis, thus rendering cells resistant to the antibiotic. NPTII serves as a marker for the selection of genetically engineered crops.
Physical form
Solution in 0.01 M phosphate buffered saline, pH 7.4, containing 15 mM sodium azide.
Disclaimer
Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.
A mutant neomycin phosphotransferase II gene reduces the resistance of transformants to antibiotic selection pressure
Yenofsky R L, et al.
Proceedings of the National Academy of Sciences of the USA, 87(9), 3435-3439 (1990)
Purification and characterization of microbially expressed neomycin phosphotransferase II (NPTII) protein and its equivalence to the plant expressed protein
Fuchs R L, et al.
Biotechnology, 11(12), 1537-1537 (1993)
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