Protein
RNA helicase NPH-II
Organism
Variola virus (isolate Human/India/Ind3/1967)
Function
NTP-dependent helicase that catalyzes unidirectional unwinding of 3'tailed duplex RNAs and plays an important role during transcription of early mRNAs, presumably by preventing R-loop formation behind the elongating RNA polymerase. Might also play a role in the export of newly synthesized mRNA chains out of the core into the cytoplasm. Required for replication and propagation of viral particles (By similarity).
Similarity
Belongs to the DEAD box helicase family. DEAH subfamily.
Sequence
MEKNLPDIFFFPNCVNVFSYKYSQDEFSNMSNMERDSFSLAVFPVIKHRWHNAHVVKHKGIYKVSTEAHGKKVSPPSLGKPSHINLTAKQYIYSEHTISFECYSFLKCITNAEINSFDEYILRGLLEAGNSLQIFSNSVGKRTDTIGVLGNKYPFSKIPLASLTPKAQREIFSAWISHRPVVLTGGTGVGKTSQVPKLLLWFNYLFGGFSTLDKITDFHERPVILSLPRIALVRLHSNTILKSLGFKVLDGSPISLRYGSIPEELINKQPKKYGIVFSTHKLSLTKLFSYGTLIIDEVHEHDQIGDIIIAVARKHHTKIDSMFLMTATLEDDRERLKVFLPNPAFIHIPGDTLFKISEVFIHNKINPSSRMAYIEEEKRNLVTAIQMYTPPDGSSGIVFVASVAQCHEYKSYLEKRLPYDMYIIHGKVLEIDKILEKVYSSPNVSIIISAPYLESSVTIHNVTHIYDMGRVFVPAPFGGSQQFISKSMRDQRKGRVGRVNPGTYVYFYDLSYMKSIQRINSEFLHNYILYANKFNLTLPEDLFIIPTNLDILWRTKEYIDSFDISTETWNKLLSNYYMKMIEYAKLYVLSPILAEELDNFERTGELTSIVQEAILSLNLRIKILNFKHKDNDTYIHFCKILFGVYNGTNATIYYHRPLTGYMNMISDTIFVPVDNN