Influenza A H7N9 (A/Shanghai/2/2013) Nucleocapsid / NP Insect Cell Lysate (WB positive control): Product Information
This H7N9 Nucleocapsid / NP overexpression lysate was created in Baculovirus-Insect cells and intented for use as a Western blot (WB) positive control. Purification of Nucleocapsid / NP protein (Cat: 40111-V08B) from the overexpression lysate was verified.
A DNA sequence encoding the Influenza A virus (A/Shanghai/2/2013(H7N9)) nucleoprotein protein (AGL44439.1) (Met1-Asn498) was expressed with a C-terminal polyhistidine tag.
The recombinant nucleoprotein protein of Influenza A virus (A/Shanghai/1/2013(H7N9)) comprises 509 amino acids and has a predicted molecular mass of 57.8 kDa. The apparent molecular mass of the protein is approximately 57 kDa in SDS-PAGE under reducing conditions.
Cell lysate was prepared by homogenization of the over-expressed cells in ice-cold modified RIPA Lysis Buffer with cocktail of protease inhibitors (Sigma). Cell debris was removed by centrifugation. Protein concentration was determined by Bradford assay (Bio-Rad protein assay, Microplate Standard assay). The cell lysate was boiled for 5 min in 1 x SDS loading buffer (50 mM Tris-HCl pH 6.8, 12.5% glycerol, 1% sodium dodecylsulfate, 0.01% bromophenol blue) containing 5% b-mercaptoethanol, and lyophilized.
1. Centrifuge the tube for a few seconds and ensure the pellet at the bottom of the tube.
2. Re-dissolve the pellet using 200μL pure water and boil for 2-5 min.
1 X Sample Buffer (1 X modified RIPA buffer+1 X SDS loading buffer).
Stability & Storage
Store at 4℃ for up to twelve months from date of receipt. After re-dissolution, aliquot and store at -80℃ for up to twelve months. Avoid repeated freeze-thaw cycles.
Western Blot (WB) Optimal dilutions/concentrations should be determined by the end user.
Influenza A H7N9 (A/Shanghai/2/2013) Nucleocapsid / NP Insect Cell Lysate (WB positive control): Alternative Names
H7N9 NP Overexpression Lysate
Nucleocapsid / NP Background Information
Influenza A viral nucleoprotein (NP) plays a critical role in virus replication and host adaptation.The influenza A virus nucleoprotein (NP) is an essential multifunctional protein that encapsidates the viral genome and functions as an adapter between the virus and the host cell machinery. NPs from all strains of influenza A viruses contain two nuclear localization signals (NLSs): a well-studied monopartite NLS1 and a less-characterized NLS2, thought to be bipartite.
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