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PNO1 protein (Saccharomyces cerevisiae) - STRING interaction network
"PNO1" - Essential nucleolar protein required for pre-18S rRNA processing, interacts with Dim1p, an 18S rRNA dimethyltransferase, and also with Nob1p, which is involved in proteasome biogenesis in Saccharomyces cerevisiae
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Known Interactions
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experimentally determined
Predicted Interactions
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gene co-occurrence
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textmining
co-expression
protein homology
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PNO1Essential nucleolar protein required for pre-18S rRNA processing, interacts with Dim1p, an 18S rRNA dimethyltransferase, and also with Nob1p, which is involved in proteasome biogenesis; contains a KH domain; Required for small ribosomal subunit (SSU) synthesis. Has a role in the processing of early nucleolar and late cytoplasmic pre-RNA species. Recruits DIM1 to nucleolar pre-RNAs. Indirectly required for cleavage at the A2 site of the 20S pre- rRNA, forming 18S rRNA, and at A1 and A2 sites of other pre-rRNAs (274 aa)    
Predicted Functional Partners:
ENP1
Protein associated with U3 and U14 snoRNAs, required for pre-rRNA processing and 40S ribosomal subunit synthesis; localized in the nucleus and concentrated in the nucleolus; Required for normal export of the pre-40S particles from the nucleus to the cytoplasm. Its subcellular location and association with pre-40S subunit shifts from mixed cytoplasm/nucleus to all nuclear in RPS19 disruptions, suggesting it acts after the ribosomal protein (483 aa)
     
 
  0.999
NOP15
Constituent of 66S pre-ribosomal particles, involved in 60S ribosomal subunit biogenesis; localizes to both nucleolus and cytoplasm; Involved in the biogenesis of the 60S ribosomal subunit. Required for pre-rRNA processing and cytokinesis. Associates with the precursors of the 25S and 5.8S rRNAs (220 aa)
     
 
  0.999
CIC1
Essential protein that interacts with proteasome components; has a potential role in proteasome substrate specificity; also copurifies with 66S pre-ribosomal particles; An adapter protein that specifically links the 26S proteasome to its substrate CDC4 which is one of the substrate recognition subunits of the SCF E3 ubiquitin ligase complex. Required for turnover of cell cycle regulatory proteins CDC4 and GRR1. Required for synthesis and nuclear export of 60S ribosomal subunits. Required for vegetative growth (376 aa)
     
 
  0.998
TSR1
Protein required for processing of 20S pre-rRNA in the cytoplasm; associates with pre-40S ribosomal particles; inhibits the premature association of 60S subunits with assembling 40S subunits in the cytoplasm; similar to Bms1p; Required for 40S ribosomal subunit synthesis. Required for normal export of the pre-40S particles from the nucleus to the cytoplasm. Its subcellular location and association with pre-40S subunitshifts from mixed cytoplasm/nucleus to all nuclear in RPS19 disruptions, suggesting it acts after the ribosomal protein (788 aa)
     
 
  0.998
NOB1
Essential nuclear protein involved in proteasome maturation and synthesis of 40S ribosomal subunits; required for cleavage of the 20S pre-rRNA to generate the mature 18S rRNA; Required for the synthesis of 40S ribosome subunits. Has a role in processing 20S pre-rRNA into the mature 18S rRNA, where it is required for cleavage at the 3’ end of the mature 18S rRNA (D-site). Accompanies the 20S pre-rRNA from the nucleus to the cytoplasm. In association with NIN1, may promote the recruitment of the proteasome to the ribosomal subunits stalled in maturation (459 aa)
     
 
  0.998
NOC4
Nucleolar protein, forms a complex with Nop14p that mediates maturation and nuclear export of 40S ribosomal subunits; Involved in nucleolar processing of pre-18S ribosomal RNA and ribosome assembly. Has a role in the nuclear export of 40S pre-ribosomal subunit to the cytoplasm. Its subcellular location and association with pre-40S subunit are unaffected by RPS19 disruptions, suggesting it acts before the ribosomal protein (552 aa)
     
 
  0.998
PWP2
Conserved 90S pre-ribosomal component essential for proper endonucleolytic cleavage of the 35 S rRNA precursor at A0, A1, and A2 sites; contains eight WD-repeats; PWP2 deletion leads to defects in cell cycle and bud morphogenesis; Required for bud-site selection and cell separation. Also involved in nucleolar processing of pre-18S ribosomal RNA (923 aa)
     
 
  0.998
DIM1
Essential 18S rRNA dimethylase (dimethyladenosine transferase), responsible for conserved m6(2)Am6(2)A dimethylation in 3’-terminal loop of 18S rRNA, part of 90S and 40S pre-particles in nucleolus, involved in pre-ribosomal RNA processing; Specifically dimethylates two adjacent adenosines in the loop of a conserved hairpin near the 3’-end of 18S rRNA in the 40S particle (318 aa)
     
 
  0.998
UTP15
Nucleolar protein, component of the small subunit (SSU) processome containing the U3 snoRNA that is involved in processing of pre-18S rRNA; Involved in nucleolar processing of pre-18S ribosomal RNA. Required for optimal pre-ribosomal RNA transcription by RNA polymerase I together with a subset of U3 proteins required for transcription (t-UTPs) (513 aa)
     
 
  0.997
DIP2
Nucleolar protein, specifically associated with the U3 snoRNA, part of the large ribonucleoprotein complex known as the small subunit (SSU) processome, required for 18S rRNA biogenesis, part of the active pre-rRNA processing complex; Involved in nucleolar processing of pre-18S ribosomal RNA (943 aa)
     
 
  0.997
Your Current Organism:
Saccharomyces cerevisiae
NCBI taxonomy Id: 4932
Other names: Candida robusta, Pachytichospora, S. cerevisiae, Saccharomyces, Saccharomyces capensis, Saccharomyces cerevisiae, Saccharomyces italicus, Saccharomyces oviformis, Saccharomyces uvarum var. melibiosus, lager beer yeast, yeast
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