RNA polymerase I complex
RNA polymerase I, one of three nuclear DNA-directed RNA polymerases found in all eukaryotes, is a multisubunit complex; typically it produces rRNAs. Two large subunits comprise the most conserved portion including the catalytic site and share similarity with other eukaryotic and bacterial multisubunit RNA polymerases. The remainder of the complex is composed of smaller subunits (generally ten or more), some of which are also found in RNA polymerase III and others of which are also found in RNA polymerases II and III. Although the core is competent to mediate ribonucleic acid synthesis, it requires additional factors to select the appropriate template.
GO:0000428
DNA-directed RNA polymerase complex
is_a
GO:0140513
nuclear protein-containing complex
is_a
GO:0005730
nucleolus
part_of
DNA-directed RNA polymerase I activity
related
DNA-directed RNA polymerase I complex
exact
SPBC4C3.05c SPBC19C2.03 SPAC23C4.15 SPAC1687.01 SPBC14C8.12 SPBC1718.03 SPAC2F3.03c SPBP23A10.07 SPBC3B9.07c SPCC1020.04c SPBC11G11.05 SPBC1289.07c SPAC1B3.12c SPCC1259.03