DEAD-box helicase 42 RNAHP RHELP SF3b125 SF3B8 splicing factor 3b, subunit 8 DEAD (Asp-Glu-Ala-Asp) box polypeptide 42 DEAD (Asp-Glu-Ala-Asp) box helicase 42 DDX42P ATP-dependent RNA helicase DDX42 SF3b DEAD box protein splicing factor 3B-associated 125 kDa protein DEAD box protein 42 RNA helicase-like protein RNA helicase-related protein Splicing factor 3B-associated 125 kDa protein EC 3.6.4.13 EC 3.6.1