| GOID Link to GO |
Functional Category | Description | Protein Count link to protein list |
|---|---|---|---|
| GO:0001650 | fibrillar center | A structure found most metazoan nucleoli, but not usually found in lower eukaryotes; surrounded by the dense fibrillar component; the zone of transcription from multiple copies of the pre-rRNA genes is in the border region between these two structures. | 5 |
| GO:0070545 | PeBoW complex | A protein complex that is involved in coordinating ribosome biogenesis with cell cycle progression. In human, it is composed of Pes1, Bop1, and WDR12; in Saccharomyces the proteins are known as Nop7p, Erb1 and Ytm1 respectively. | 5 |
| GO:0030874 | nucleolar chromatin | The portion of nuclear chromatin associated with the nucleolus; includes the DNA encoding the ribosomal RNA. | 4 |
| GO:0000500 | RNA polymerase I upstream activating factor complex | A complex required for the transcription of rDNA by RNA polymerase I. In yeast the complex consists of Rrrn5p, Rrn9p, Rrn10p, histones H3 and H4, and Uaf30p. | 4 |
| GO:0070860 | RNA polymerase I core factor complex | A RNA polymerase I-specific transcription factor complex that is required for the transcription of rDNA by RNA polymerase I. In yeast the complex consists of Rrn6p, Rrn7p, and Rrn11p. | 4 |
| GO:0005736 | DNA-directed 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. | 4 |
| GO:0034457 | Mpp10 complex | A protein complex that forms a subcomplex of the 90S preribosome. In S. cerevisiae, it is composed of Mpp10p, Imp3p and Imp4p. | 3 |
| GO:0031428 | box C/D snoRNP complex | A ribonucleoprotein complex containing small nucleolar RNA of the box C/D type that can carry out ribose-2'-O-methylation of target RNAs. | 2 |
| GO:0001651 | dense fibrillar component | A structure found in the nucleolus, which contains newly synthesized preribosomal RNA (pre-rRNA) and a collection of proteins. | 2 |
| GO:0005731 | nucleolus organizer region | A region of a chromosome where nucleoli form during interphase, and where genes encoding the largest rRNA precursor transcript are tandemly arrayed. | 2 |
| GO:0031429 | box H/ACA snoRNP complex | A box H/ACA RNP complex that is located in the nucleolus. | 1 |
| GO:0034456 | UTP-C complex | A protein complex that forms a subcomplex of the 90S preribosome. In S. cerevisiae, it is composed of Rrp7p, Utp22p, Ckb1p, Cka1p, Ckb2p and Cka2p. | 1 |