3'-5' RNA helicase that plays a key role in the male and female germline by promoting transition from mitotic to meiotic divisions in stem cells. Specifically recognizes and binds N6-methyladenosine (m6A)-containing RNAs, a modification present at internal sites of mRNAs and some non-coding RNAs that plays a role in the efficiency of RNA processing and stability. Essential for ensuring a successful progression of the meiotic program in the germline by regulating the level of m6A-containing RNAs. Acts by binding and promoting degradation of m6A-containing mRNAs: the 3'-5' RNA helicase activity is required for this process and RNA degradation may be mediated by XRN1 exoribonuclease. Required for both spermatogenesis and oogenesis. ATP + H2O = ADP + H(+) + phosphate Interacts with MEIOC; binds transcripts that regulate the mitotic cell cycle inhibiting progression into metaphase, thereby allowing meiotic prophase to proceed normally (By similarity). Interacts (via ANK repeats) with XRN1. Interacts with ZCCHC4. Associates with the small ribosomal subunit (By similarity). The YTH domain mediates RNA-binding. It recognizes and binds N6-methyladenosine (m6A)-containing RNAs. Belongs to the DEAD box helicase family. DEAH subfamily. Truncated N-terminus.