title: GSM9026235: ProE_Mettl3_KO_rep1; Mus musculus; RNA-Seq
library_construction_protocol: Mouse erythroid progenitor cells and proerythroblasts were sorted, collected, and washed twice with PBS, then amplified by the Smart-Seq2 method. An Oligo-dT primer was used in the reverse transcription reaction for first-strand cDNA synthesis, followed by PCR amplification to enrich the cDNA and a magbeads purification step to clean up the product.  Next, the cDNA was randomly fragmented by ultrasonic waves prior to Illumina library preparation. After library preparation, PerkinElmer LabChip® GX Touch and Step OnePlus™ Real-Time PCR System were introduced for library quality inspection. Qualified libraries were then loaded on Illumina Hiseq platform for PE150 sequencing.For m6A-seq, m6A immunoprecipitation was performed according to the standard protocol. The cDNA was fragmented to ~300 bp using Tn5 transposase and processed using the TruePrep DNA Library Prep Kit V2 (Vazyme, TD501). Final libraries were amplified with the Tn5 adaptor and 3' primer (AATGATACGGCGACCACCGAGATCTACACTAGATCGCTCGTCGGCAGCGTCAGATGTGTATAAGAGACAGGTAATACGACTCACTATA) and sequenced as 150-bp paired-end reads on an Illumina HiSeq X Ten platform.