. "\"The extension of an RNA molecule after transcription initiation and promoter clearance at an RNA polymerase I specific promoter by the addition of ribonucleotides catalyzed by RNA polymerase I.\" [GOC:mah, GOC:txnOH]" . . "transcription elongation from RNA polymerase I promoter" . "RNA elongation from Pol I promoter" . "Reactome:REACT_100733 \"RNA Polymerase I Chain Elongation, Caenorhabditis elegans\"" . "Reactome:REACT_105916 \"RNA Polymerase I Chain Elongation, Canis familiaris\"" . "Reactome:REACT_112721 \"RNA Polymerase I Chain Elongation, Oryza sativa\"" . "Reactome:REACT_115044 \"RNA Polymerase I Chain Elongation, Gallus gallus\"" . "Reactome:REACT_2204 \"RNA Polymerase I Chain Elongation, Homo sapiens\"" . "Reactome:REACT_28877 \"RNA Polymerase I Chain Elongation, Schizosaccharomyces pombe\"" . "Reactome:REACT_79758 \"RNA Polymerase I Chain Elongation, Xenopus tropicalis\"" . "Reactome:REACT_80680 \"RNA Polymerase I Chain Elongation, Taeniopygia guttata\"" . "Reactome:REACT_81860 \"RNA Polymerase I Chain Elongation, Rattus norvegicus\"" . "Reactome:REACT_85058 \"RNA Polymerase I Chain Elongation, Mus musculus\"" . "Reactome:REACT_86256 \"RNA Polymerase I Chain Elongation, Drosophila melanogaster\"" . "Reactome:REACT_88778 \"RNA Polymerase I Chain Elongation, Danio rerio\"" . "Reactome:REACT_89996 \"RNA Polymerase I Chain Elongation, Sus scrofa\"" . "Reactome:REACT_90748 \"RNA Polymerase I Chain Elongation, Bos taurus\"" . . "RNA polymerase I transcription elongation factor activity" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .