NS5 Protein, Dengue virus 2 (His)

NS5 Protein is part of the flavivirus RNA replication complex (RC) composed of viral non-structural proteins and host-cell cofactors. NS5 is the largest flavivirus protein, the most conserved, which act as two domains, the RNA-dependent RNA polymerase (RdRp) and RNA methyltransferase enzyme (MTase). NS5 plays a fundamental role in flavivirus replication, viral RNA methylation, RNA polymerization, and host immune system evasion. NS5 Protein, Dengue virus 2 (His) is the recombinant Virus-derived NS5 protein, expressed by E. coli , with N-His labeled tag.

Non-structural protein 5 (NS5) is part of the flavivirus RNA replication complex (RC) composed of viral non-structural proteins and host-cell cofactors. NS5 is the largest flavivirus protein, the most conserved, which act as two domains, the RNA-dependent RNA polymerase (RdRp) and RNA methyltransferase enzyme (MTase). The DENV-NS5 RdRp domain contributes to the viral replication stages, whereas the MTase initiates viral RNA capping and facilitates polyprotein translation. NS5 plays a fundamental role in viral RNA methylation, RNA polymerization, and host immune system evasion. It functions as a scaffold protein with different binding sites for the host STAT2 and ERC1 proteins, but sharing a requirement for UBR4. NS5 also interacts with hostcell proteins as hSTAT2 and contributes to the evasion of the type I interferon (IFN)-mediated innate immune response, which is the first step of host-cell defense against viral infections. NS5 is a potent antagonist of type I IFN signaling of the DENV proteins by suppressing the human JAK-STAT signaling^[1][2][3].

Virus

E. coli

N-6*His

AAC59275.1 (G2492-Q2787)

/

Partial

GTGNIGETLGEKWKSRLNALGKSEFQIYKKSGIQEVDRTLAKEGIKRGETDHHAVSRGSAKLRWFVERNMVTPEGKVVDLGCGRGGWSYYCGGLKNVREVKGLTKGGPGHEEPIPMSTYGWNLVRLQSGVDVFFTPPEKCDTLLCDIGESSPNPTVEAGRTLRVLNLVENWLNNNTQFCIKVLNPYMPSVIEKMEALQRKYGGALVRNPLSRNSTHEMYWVSNASGNIVSSVNMISRMLINRFTMRHKKATYEPDVDLGSGTRNIGIESEIPNLDIIGKRIEKIKQEHETSWHYDQ

Approximately 33 kDa, based on SDS-PAGE under reducing conditions.

• 
  ≥ 95%, as determined by reducing SDS-PAGE.

Lyophilized powder

Lyophilized from a 0.22 μm filtered solution of 50 mM Tris-HCl, 300 mM NaCl, 200 mM arginine, pH 8.0.
Note: For SPR assay, please replace the buffer. Primary amine components (e.g., Tris, imidazole) can affect protein-coupled chips.

<1 EU/μg, determined by LAL method.

It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH₂O. For long term storage it is recommended to add a carrier protein (0.1% BSA, 5% HSA, 10% FBS or 5% Trehalose).

Stored at -20°C for 2 years from date of receipt. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.

Room temperature in continental US; may vary elsewhere.

• [1]. /biology-dictionary/ku-19-19-cell.html