Nucleoprotein/NP Protein, H2N2 (P21433, sf9, His)

Nucleoprotein/NP Protein is essential for influenza virus replication and transcription.It binds viral RNA, forming a complex for genome replication.NP Protein interacts with host proteins, aiding viral pathogenesis and immune evasion.Understanding NP Protein's functions is crucial for developing influenza antiviral strategies.Nucleoprotein/NP Protein, H2N2 (P21433, sf9, His) is the recombinant Virus-derived Nucleoprotein/NP protein, expressed by Sf9 insect cells , with C-His labeled tag.

Nucleoprotein (NP) plays a pivotal role in the influenza virus life cycle by encapsidating the negative-strand viral RNA, forming the ribonucleoprotein (RNP) complex that serves as a template for transcription and replication. Facilitating the initiation of the infectious cycle requires the active transport of the RNP into the host cell nucleus, a task accomplished by NP's nuclear localization signals through the cellular importin alpha/beta pathway. Later in infection, the nuclear export of RNPs involves interactions with viral proteins, including NEP and M1, possibly in association with host exportin-1/XPO1. Notably, NP homomultimerizes to create the nucleocapsid, and its dynamic interplay with M1, governed by acidification driven by the M2 protein, regulates the exposure of NP's nuclear localization signals, facilitating the targeted transport of the RNP to the nucleus. Furthermore, NP forms essential contacts with viral genomic RNA, relying on a combination of electrostatic interactions and planar interactions to mediate protein-RNA binding.

Virus

Sf9 insect cells

C-His

P21433 (M1-N498)

/

Approximately 52 kDa

Greater than 95% as determined by reducing SDS-PAGE

<1 EU/μg, determined by LAL method.