mRNA guanylyltransferase activity

"Catalysis of the reaction: GTP + (5')pp-Pur-mRNA = diphosphate + G(5')ppp-Pur-mRNA; G(5')ppp-Pur-mRNA is mRNA containing a guanosine residue linked 5' through three phosphates to the 5' position of the terminal residue." [EC:2.7.7.50]

mRNA guanylyltransferase activity

EC:2.7.7.50, MetaCyc:MRNA-GUANYLYLTRANSFERASE-RXN, Reactome:REACT_101635 "Formation of the CE:GMP intermediate complex, Arabidopsis thaliana", Reactome:REACT_102473 "Transfer of GMP from the capping enzyme GT site to 5'-end of mRNA, Arabidopsis thaliana", Reactome:REACT_103446 "Formation of the CE:GMP intermediate complex, Schizosaccharomyces pombe", Reactome:REACT_103482 "Transfer of GMP from the capping enzyme GT site to 5'-end of mRNA, Oryza sativa", Reactome:REACT_107547 "Formation of the CE:GMP intermediate complex, Xenopus tropicalis", Reactome:REACT_108251 "Transfer of GMP from the capping enzyme GT site to 5'-end of mRNA, Canis familiaris", Reactome:REACT_110689 "Formation of the CE:GMP intermediate complex, Oryza sativa", Reactome:REACT_1580 "Formation of the CE:GMP intermediate complex, Homo sapiens", Reactome:REACT_1968 "Transfer of GMP from the capping enzyme GT site to 5'-end of mRNA, Homo sapiens", Reactome:REACT_32228 "Formation of the CE:GMP intermediate complex, Mus musculus", Reactome:REACT_36269 "Formation of the CE:GMP intermediate complex, Bos taurus", Reactome:REACT_77279 "Transfer of GMP from the capping enzyme GT site to 5'-end of mRNA, Drosophila melanogaster", Reactome:REACT_79193 "Formation of the CE:GMP intermediate complex, Caenorhabditis elegans", Reactome:REACT_79495 "Formation of the CE:GMP intermediate complex, Danio rerio", Reactome:REACT_80509 "Transfer of GMP from the capping enzyme GT site to 5'-end of mRNA, Dictyostelium discoideum", Reactome:REACT_82511 "Formation of the CE:GMP intermediate complex, Rattus norvegicus", Reactome:REACT_83926 "Transfer of GMP from the capping enzyme GT site to 5'-end of mRNA, Gallus gallus", Reactome:REACT_86486 "Transfer of GMP from the capping enzyme GT site to 5'-end of mRNA, Schizosaccharomyces pombe", Reactome:REACT_86857 "Formation of the CE:GMP intermediate complex, Gallus gallus", Reactome:REACT_88083 "Transfer of GMP from the capping enzyme GT site to 5'-end of mRNA, Saccharomyces cerevisiae", Reactome:REACT_88699 "Transfer of GMP from the capping enzyme GT site to 5'-end of mRNA, Bos taurus", Reactome:REACT_89040 "Transfer of GMP from the capping enzyme GT site to 5'-end of mRNA, Mus musculus", Reactome:REACT_90576 "Formation of the CE:GMP intermediate complex, Canis familiaris", Reactome:REACT_90910 "Formation of the CE:GMP intermediate complex, Saccharomyces cerevisiae", Reactome:REACT_92552 "Formation of the CE:GMP intermediate complex, Drosophila melanogaster", Reactome:REACT_93206 "Transfer of GMP from the capping enzyme GT site to 5'-end of mRNA, Rattus norvegicus", Reactome:REACT_93667 "Formation of the CE:GMP intermediate complex, Dictyostelium discoideum", Reactome:REACT_93676 "Transfer of GMP from the capping enzyme GT site to 5'-end of mRNA, Danio rerio", Reactome:REACT_95548 "Transfer of GMP from the capping enzyme GT site to 5'-end of mRNA, Caenorhabditis elegans", Reactome:REACT_97427 "Transfer of GMP from the capping enzyme GT site to 5'-end of mRNA, Xenopus tropicalis"

mRNA capping enzyme activity, protein lambda2