title: Modification of the 5'-terminals of mRNAs by viral and cellular enzymes.
mesh_terms: D001483:Base Sequence; D006150:Guanine Nucleotides / Q000378:metabolism; D006367:HeLa Cells / Q000378:metabolism; D007700:Kinetics; D008780:Methyltransferases / Q000378:metabolism; D009713:Nucleotidyltransferases / Q000378:metabolism; D010942:Plant Viruses / Q000378:metabolism; D012333:RNA, Messenger / Q000096:biosynthesis; D012436:S-Adenosylmethionine; D014616:Vaccinia virus / Q000378:metabolism
chemical_list: D006150:Guanine Nucleotides; D012333:RNA, Messenger; D012436:S-Adenosylmethionine; D008780:Methyltransferases; D009713:Nucleotidyltransferases