title: Donor and acceptor specificities of HeLa cell mRNA guanylyltransferase.
mesh_terms: D006160:Guanosine Triphosphate / Q000494:pharmacology; D006367:HeLa Cells / Q000201:enzymology*; D006801:Humans; D007700:Kinetics; D009713:Nucleotidyltransferases; D011061:Poly A; D012315:RNA Caps / Q000096:biosynthesis; D012316:RNA Nucleotidyltransferases / Q000378:metabolism*; D013379:Substrate Specificity; D000098556:mRNA Guanylyltransferases
chemical_list: D012315:RNA Caps; D011061:Poly A; D006160:Guanosine Triphosphate; D009713:Nucleotidyltransferases; D012316:RNA Nucleotidyltransferases; D000098556:mRNA Guanylyltransferases