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| FBL | rRNA 2’-O-methyltransferase fibrillarin; S-adenosyl-L-methionine-dependent methyltransferase that has the ability to methylate both RNAs and proteins. Involved in pre-rRNA processing by catalyzing the site-specific 2’-hydroxyl methylation of ribose moieties in pre-ribosomal RNA. Site specificity is provided by a guide RNA that base pairs with the substrate. Methylation occurs at a characteristic distance from the sequence involved in base pairing with the guide RNA. Also acts as a protein methyltransferase by mediating methylation of ’Gln-105’ of histone H2A (H2AQ104me), a modification [...] (321 aa) | |||
| UTP18 | U3 small nucleolar RNA-associated protein 18 homolog; Involved in nucleolar processing of pre-18S ribosomal RNA; UTPb subcomplex (556 aa) | |||
| KRR1 | KRR1 small subunit processome component homolog; Required for 40S ribosome biogenesis. Involved in nucleolar processing of pre-18S ribosomal RNA and ribosome assembly (By similarity) (381 aa) | |||
| RRP9 | U3 small nucleolar RNA-interacting protein 2; Component of a nucleolar small nuclear ribonucleoprotein particle (snoRNP) thought to participate in the processing and modification of pre-ribosomal RNA; Belongs to the WD repeat RRP9 family (475 aa) | |||
| NAT10 | RNA cytidine acetyltransferase; RNA cytidine acetyltransferase with specificity toward both 18S rRNA and tRNAs. Catalyzes the formation of N(4)-acetylcytidine (ac4C) at positions 1337 and 1842 in 18S rRNA (By similarity). Required for early nucleolar cleavages of precursor rRNA at sites A0, A1 and A2 during 18S rRNA synthesis. Catalyzes the formation of ac4C in serine and leucine tRNAs (By similarity). Requires the tRNA-binding adapter protein THUMBD1 for full tRNA acetyltransferase activity but not for 18S rRNA acetylation. Can acetylate both histones and microtubules. Histone acetyla [...] (1025 aa) | |||
| IMP4 | U3 small nucleolar ribonucleoprotein protein IMP4; Component of the 60-80S U3 small nucleolar ribonucleoprotein (U3 snoRNP). Required for the early cleavages during pre-18S ribosomal RNA processing; MPP10 subcomplex (291 aa) | |||
| UTP20 | Small subunit processome component 20 homolog; Involved in 18S pre-rRNA processing. Associates with U3 snoRNA; Armadillo-like helical domain containing (2785 aa) | |||
| UTP6 | U3 small nucleolar RNA-associated protein 6 homolog; Involved in nucleolar processing of pre-18S ribosomal RNA; UTPb subcomplex (597 aa) | |||
| NOP58 | Nucleolar protein 58; Required for 60S ribosomal subunit biogenesis (By similarity). Core component of box C/D small nucleolar ribonucleoprotein (snoRNP) particles. Required for the biogenesis of box C/D snoRNAs such as U3, U8 and U14 snoRNAs; Belongs to the NOP5/NOP56 family (529 aa) | |||
| RPS11 | Ribosomal protein S11; Belongs to the universal ribosomal protein uS17 family (158 aa) | |||
| UTP15 | U3 small nucleolar RNA-associated protein 15 homolog; Ribosome biogenesis factor. Involved in nucleolar processing of pre-18S ribosomal RNA. Required for optimal pre- ribosomal RNA transcription by RNA polymerase I; UTPa subcomplex (518 aa) | |||
| WDR3 | WD repeat-containing protein 3; WD repeat domain containing; Belongs to the WD repeat WDR3/UTP12 family (943 aa) | |||
| CIRH1A | U3 small nucleolar RNA-associated protein 4 homolog; Ribosome biogenesis factor. Involved in nucleolar processing of pre-18S ribosomal RNA. Involved in small subunit (SSU) pre-rRNA processing at sites A’, A0, 1 and 2b. Required for optimal pre-ribosomal RNA transcription by RNA polymerase. May be a transcriptional regulator. Acts as a positive regulator of HIVEP1 which specifically binds to the DNA sequence 5’-GGGACTTTCC-3’ found in enhancer elements of numerous viral promoters such as those of HIV-1, SV40, or CMV (686 aa) | |||
| NOC4L | Nucleolar complex protein 4 homolog; Armadillo-like helical domain containing; Belongs to the CBF/MAK21 family (516 aa) | |||
| FCF1 | rRNA-processing protein FCF1 homolog; Essential protein involved in pre-rRNA processing and 40S ribosomal subunit assembly (198 aa) | |||
| SRPK1 | SRSF protein kinase 1; Serine/arginine-rich protein-specific kinase which specifically phosphorylates its substrates at serine residues located in regions rich in arginine/serine dipeptides, known as RS domains and is involved in the phosphorylation of SR splicing factors and the regulation of splicing. Plays a central role in the regulatory network for splicing, controlling the intranuclear distribution of splicing factors in interphase cells and the reorganization of nuclear speckles during mitosis. Can influence additional steps of mRNA maturation, as well as other cellular activiti [...] (655 aa) | |||
| BMS1 | Ribosome biogenesis protein BMS1 homolog; May act as a molecular switch during maturation of the 40S ribosomal subunit in the nucleolus (1282 aa) | |||
| WDR46 | WD repeat-containing protein 46; Scaffold component of the nucleolar structure. Required for localization of DDX21 and NCL to the granular compartment of the nucleolus; WD repeat domain containing (610 aa) | |||
| NOP56 | Nucleolar protein 56; Involved in the early to middle stages of 60S ribosomal subunit biogenesis. Core component of box C/D small nucleolar ribonucleoprotein (snoRNP) particles. Required for the biogenesis of box C/D snoRNAs such U3, U8 and U14 snoRNAs; Belongs to the NOP5/NOP56 family (594 aa) | |||
| NOL10 | Nucleolar protein 10; WD repeat domain containing; Belongs to the WD repeat NOL10/ENP2 family (688 aa) | |||
| RPS8 | Ribosomal protein S8; Belongs to the eukaryotic ribosomal protein eS8 family (208 aa) | |||
| RPS14 | Ribosomal protein S14 (151 aa) | |||
| NOP14 | Nucleolar protein 14; Involved in nucleolar processing of pre-18S ribosomal RNA. Has a role in the nuclear export of 40S pre-ribosomal subunit to the cytoplasm (By similarity); Belongs to the NOP14 family (857 aa) | |||
| TBL3 | Transducin beta-like protein 3; WD repeat domain containing; UTPb subcomplex (808 aa) | |||
| EMG1 | Ribosomal RNA small subunit methyltransferase NEP1; S-adenosyl-L-methionine-dependent pseudouridine N(1)- methyltransferase that methylates pseudouridine at position 1248 (Psi1248) in 18S rRNA. Involved the biosynthesis of the hypermodified N1-methyl-N3-(3-amino-3-carboxypropyl) pseudouridine (m1acp3-Psi) conserved in eukaryotic 18S rRNA. Is not able to methylate uridine at this position. Has also an essential role in 40S ribosomal subunit biogenesis independent on its methyltransferase activity, facilitating the incorporation of ribosomal protein S19 during the formation of pre-riboso [...] (244 aa) | |||
| RPS5 | Ribosomal protein S5; Belongs to the universal ribosomal protein uS7 family (204 aa) | |||
