PAR-CLIP-seq of HA-METTL14 in HepG2 cells

The METTL3-METTL14 heterodimer is the core component of the N6-methyltransferase complex (MTC) that catalyzes methylation of adenosine residues at the N(6) position of RNA. As the non-catalytic subunit of MTC, METTL14 functions as the RNA-binding scaffold that recognizes the RNA substrate. To identify METTL14 binding sites in the transcriptome, we overexpressed HA-tagged METTL14 in HepG2 cells and performed PAR-CLIP (Photoactivatable Ribonucleoside-Enhanced Crosslinking and Immunoprecipitation) using HA antibody. Subsequent deep sequencing identified 5,961 METTL14 binding sites, in which the GGAC motif was enriched. PAR-CLIP using HA antibody in HepG2 cells with HA-METTL14 overexpression