Immunogen sequence: GGRSRYRTTS SANNPNLMYQ DECDRRLRGV KDGGRRDSAS YRDRSETDRA GYANGSGYGS PNSAFGAQAG QYTYGQ. DEAD box proteins, characterized by the conserved motif Asp-Glu-Ala-Asp (DEAD), are putative RNA helicases. They are implicated in a number of cellul