Nucleoprotein, Recombinant, Influenza A Virus, aa1-498, His-Tag (NP)

Catalog No : USB-370718
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Product name Nucleoprotein, Recombinant, Influenza A Virus, aa1-498, His-Tag (NP)
Catalog No USB-370718
Supplier’s Catalog No 370718
Supplier US Biologicals
Source antigen Recombinant, E. coli
Reactivity
Cross reactivity
Applications
Molecular weight 72.19
Storage -20°C
Other names
Grade Purified
Purity ~85% (SDS-PAGE)
Form Supplied as a liquid in Tris, 50% glycerol.
Reactivity life 6 months
Note For reserch purpose only
Purity ~85% (SDS-PAGE)
Description Encapsidates the negative strand viral RNA, protecting it from nucleases. The encapsidated genomic RNA is termed the ribonucleoprotein (RNP) and serves as template for transcription and replication. The RNP needs to be localized in the nucleus to start an infectious cycle, but is too large to diffuse through the nuclear pore complex. NP comprises at least 2 nuclear localization signals and is responsible of the active RNP import into the nucleus through the cellular importin alpha/beta pathway. Later in the infection, nucleus export of RNP are mediated through viral proteins NEP interacting with M1 which binds nucleoproteins. It is possible that the nucleoprotein binds directly exportin-1 (XPO1) and plays an active role in RNP nuclear export. M1 interaction with RNP seems to hide nucleoprotein's nuclear localization signals. Soon after a virion infects a new cell, M1 dissociates from the RNP under acidification of the virion driven by M2 protein. Dissociation of M1 from RNP unmask nucleoprotein's nuclear localization signals, targeting the RNP to the nucleus (By similarity). Source: Recombinant protein corresponding to aa1-498 from Influenza A virus NP, fused to His-SUMO-Tag at N-terminal, expressed in E. coli. Molecular Weight: ~72.19kD AA Sequence: MASQGTKRSYEQMETDGERQNATEIRASVGKMIDGIGRFYIQMCTELKLSDYEGRLIQNSLTVERMVLSAFDERRNRYLEEHPSAGKDPKKTGGPIYKRVGGRWMRELVLYDKEEIRRIWRQANNGDDATRGLTHMMIWHSNLNDTTYQRTRALVRTGMDPRMCSLMQGSTLPRRSGAAGAAVKGIGTMVMELIRMIKRGINDRNFWRGENGRKTRSAYERMCNILKGKFQTAAQRAMMDQVRESRNPGNAEIEDLIFSARSALILRGSVAHKSCLPACVYGPAVSSGYDFEKEGYSLVGIDPFKLLQNSQVYSLIRPNENPAHKSQLVWMACHSAAFEDLRLLSFIRGTKVSPRGKLSTRGVQIASNENMDNMESSTLELRSRYWAIRTRSGGNTNQQRASAGQISVQPTFSVQRNLPFEKSTVMAAFTGNTEGRTSDMRAEIIRMMEGAKPEEVSFRGRGVFELSDEKATNPIVPSFDMSNEGSYFFGDNAEEYDN Storage and Stability: May be stored at 4°C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.