The METTL1 protein is a catalytic component of the METTL1-WDR4 methyltransferase complex, which promotes the formation of N(7)-methylguanine in tRNA, mRNA, and miRNA. METTL1 Protein, Human (His) is the recombinant human-derived METTL1 protein, expressed by E. coli , with N-His labeled tag.