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UTP20 UTP20 ENP1 ENP1 KRR1 KRR1 PWP2 PWP2 NOP14 NOP14 SAS10 SAS10 NOP6 NOP6 RRP8 RRP8 BFR2 BFR2 UTP4 UTP4 FCF1 FCF1 ESF1 ESF1 UTP5 UTP5 UTP6 UTP6 SNU13 SNU13 UTP7 UTP7 LCP5 LCP5 ROK1 ROK1 SLX9 SLX9 UTP8 UTP8 ENP2 ENP2 DBP8 DBP8 UTP9 UTP9 FAF1 FAF1 UTP25 UTP25 NOP9 NOP9 HCA4 HCA4 UTP10 UTP10 RPS14B RPS14B MPP10 MPP10 DHR2 DHR2 UTP11 UTP11 UTP30 UTP30 SOF1 SOF1 FCF2 FCF2 DIP2 DIP2 EMG1 EMG1 NOP56 NOP56 UTP13 UTP13 SGD1 SGD1 RPP0 RPP0 UTP21 UTP21 UTP14 UTP14 UTP15 UTP15 ECM16 ECM16 RRP5 RRP5 IMP4 IMP4 KRE33 KRE33 KRI1 KRI1 ESF2 ESF2 RCL1 RCL1 UTP23 UTP23 BUD21 BUD21 PNO1 PNO1 NOP58 NOP58 RRP12 RRP12 RPS9A RPS9A RPS6A RPS6A NAN1 NAN1 BMS1 BMS1 MRD1 MRD1 RRP9 RRP9 NOC4 NOC4
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query proteins and first shell of interactors
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second shell of interactors
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proteins of unknown 3D structure
filled nodes:
a 3D structure is known or predicted
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Known Interactions
from curated databases
experimentally determined
Predicted Interactions
gene neighborhood
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gene co-occurrence
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co-expression
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UTP20U3 small nucleolar RNA-associated protein 20; Component of the small-subunit (SSU) processome; SSU processome is involved in the biogenesis of the 18S rRNA; Belongs to the UTP20 family. (2493 aa)
ENP1Protein 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; human BYSL functionally complements the heat sensitivity of an enp1 ts mutant; Belongs to the bystin family. (483 aa)
KRR1KRR1 small subunit processome component; Nucleolar protein required for rRNA synthesis and ribosomal assembly; required for the synthesis of 18S rRNA and for the assembly of 40S ribosomal subunit; essential gene; Belongs to the KRR1 family. (316 aa)
PWP2Periodic tryptophan protein 2; 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. (923 aa)
NOP14Nucleolar protein; forms a complex with Noc4p that mediates maturation and nuclear export of 40S ribosomal subunits; also present in the small subunit processome complex, which is required for processing of pre-18S rRNA; Belongs to the NOP14 family. (810 aa)
SAS10Something about silencing protein 10; Subunit of U3-containing Small Subunit (SSU) processome complex; involved in production of 18S rRNA and assembly of small ribosomal subunit; disrupts silencing when overproduced; mutant has increased aneuploidy tolerance; essential gene. (610 aa)
NOP6Nucleolar protein 6; rRNA-binding protein required for 40S ribosomal subunit biogenesis; contains an RNA recognition motif (RRM); hydrophilin essential to overcome the stress of the desiccation-rehydration process; NOP6 may be a fungal-specific gene as no homologs have been yet identified in higher eukaryotes. (225 aa)
RRP825S rRNA (adenine(645)-N(1))-methyltransferase; Nucleolar S-adenosylmethionine-dependent rRNA methyltransferase; methylates adenine (m1A) of the large subunit (LSU) rRNA at position 645; involved in pre-rRNA cleavage at site A2; mutation is synthetically lethal with a gar1 mutation; deletion disrupts telomere maintenance by influencing the expression of neighboring gene STN1; Belongs to the methyltransferase superfamily. RRP8 family. (392 aa)
BFR2Protein BFR2; Component of the SSU and 90S preribosomes; involved in pre-18S rRNA processing; binds to U3 snoRNA and Mpp10p; multicopy suppressor of sensitivity to Brefeldin A; expression is induced during lag phase and also by cold shock. (534 aa)
UTP4U3 small nucleolar RNA-associated protein 4; Subunit of U3-containing 90S preribosome and SSU processome complexes; involved in production of 18S rRNA and assembly of small ribosomal subunit; member of t-Utp subcomplex involved with transcription of 35S rRNA transcript; Small Subunit processome is also known as SSU processome. (776 aa)
FCF1rRNA-processing protein FCF1; Putative PINc domain nuclease; required for early cleavages of 35S pre-rRNA and maturation of 18S rRNA; component of the SSU (small subunit) processome involved in 40S ribosomal subunit biogenesis; copurifies with Faf1p. (189 aa)
ESF1Pre-rRNA-processing protein ESF1; Nucleolar protein involved in pre-rRNA processing; depletion causes severely decreased 18S rRNA levels. (628 aa)
UTP5U3 small nucleolar RNA-associated protein 5; Subunit of U3-containing Small Subunit (SSU) processome complex; involved in production of 18S rRNA and assembly of small ribosomal subunit. (643 aa)
UTP6Nucleolar protein; component of the small subunit (SSU) processome containing the U3 snoRNA that is involved in processing of pre-18S rRNA. (440 aa)
SNU1313 kDa ribonucleoprotein-associated protein; RNA binding protein; part of U3 snoRNP involved in rRNA processing, part of U4/U6-U5 tri-snRNP involved in mRNA splicing, similar to human 15.5K protein; Belongs to the eukaryotic ribosomal protein eL8 family. (126 aa)
UTP7Nucleolar protein; component of the small subunit (SSU) processome containing the U3 snoRNA that is involved in processing of pre-18S rRNA. (554 aa)
LCP5U3 small nucleolar ribonucleoprotein protein LCP5; Essential protein involved in maturation of 18S rRNA; depletion leads to inhibited pre-rRNA processing and reduced polysome levels; localizes primarily to the nucleolus. (357 aa)
ROK1ATP-dependent RNA helicase ROK1; RNA-dependent ATPase; involved in pre-rRNA processing at sites A0, A1, and A2, and in control of cell cycle progression; contains two upstream open reading frames (uORFs) in 5' untranslated region which regulate translation; Belongs to the DEAD box helicase family. DDX52/ROK1 subfamily. (564 aa)
SLX9Ribosome biogenesis protein SLX9; Protein required for pre-rRNA processing; associated with the 90S pre-ribosome and 43S small ribosomal subunit precursor; interacts with U3 snoRNA; deletion mutant has synthetic fitness defect with an sgs1 deletion mutant; Belongs to the SLX9 family. (210 aa)
UTP8U3 small nucleolar RNA-associated protein 8; Nucleolar protein required for export of tRNAs from the nucleus; also copurifies with the small subunit (SSU) processome containing the U3 snoRNA that is involved in processing of pre-18S rRNA. (713 aa)
ENP2Ribosome biogenesis protein ENP2; Component of the SSU; required for pre-18S rRNA processing, biogenesis of the small ribosomal subunit; interacts with U3 snoRNA, Mpp10p and Bfr2p; contains WD repeats, and has homology to Spb1p. (707 aa)
DBP8ATPase, putative RNA helicase of the DEAD-box family; component of 90S preribosome complex involved in production of 18S rRNA and assembly of 40S small ribosomal subunit; ATPase activity stimulated by association with Esf2p; Belongs to the DEAD box helicase family. DDX49/DBP8 subfamily. (431 aa)
UTP9Nucleolar protein; component of the small subunit (SSU) processome containing the U3 snoRNA that is involved in processing of pre-18S rRNA. (575 aa)
FAF1Protein required for pre-rRNA processing; also required for 40S ribosomal subunit assembly. (346 aa)
UTP25U3 small nucleolar RNA-associated protein 25; Nucleolar protein; required for 35S pre-RNA processing and 40S ribosomal subunit biogenesis. (721 aa)
NOP9Nucleolar protein 9; Essential subunit of U3-containing 90S preribosome; involved in production of 18S rRNA and assembly of small ribosomal subunit; also part of pre-40S ribosome and required for its export into cytoplasm; binds RNA and contains pumilio domain; Belongs to the NOP9 family. (666 aa)
HCA4DEAD box RNA helicase; component of the SSU; interacts with Bfr2p and Enp2p; high-copy number suppression of a U14 snoRNA processing mutant suggests an involvement in 18S rRNA synthesis; Belongs to the DEAD box helicase family. DDX10/DBP4 subfamily. (770 aa)
UTP10Nucleolar protein; component of the small subunit (SSU) processome containing the U3 snoRNA that is involved in processing of pre-18S rRNA; mutant has increased aneuploidy tolerance. (1769 aa)
RPS14BProtein component of the small (40S) ribosomal subunit; required for ribosome assembly and 20S pre-rRNA processing; mutations confer cryptopleurine resistance; homologous to mammalian ribosomal protein S14 and bacterial S11; RPS14B has a paralog, RPS14A, that arose from the whole genome duplication. (138 aa)
MPP10U3 small nucleolar RNA-associated protein MPP10; Component of the SSU processome and 90S preribosome; required for pre-18S rRNA processing, interacts with and controls the stability of Imp3p and Imp4p, essential for viability; similar to human Mpp10p. (593 aa)
DHR2Predominantly nucleolar DEAH-box ATP-dependent RNA helicase; required for 18S rRNA synthesis; Belongs to the DEAD box helicase family. DEAH subfamily. (735 aa)
UTP11U3 small nucleolar RNA-associated protein 11; Subunit of U3-containing Small Subunit (SSU) processome complex; involved in production of 18S rRNA and assembly of small ribosomal subunit. (250 aa)
UTP30Ribosome biogenesis protein UTP30; Putative subunit of U3-containing 90S preribosome complex; complex is involved in production of 18S rRNA and assembly of small ribosomal subunit; Belongs to the universal ribosomal protein uL1 family. Highly divergent. (274 aa)
SOF1Protein required for biogenesis of 40S (small) ribosomal subunit; has similarity to the beta subunit of trimeric G-proteins and the splicing factor Prp4p; essential gene; Belongs to the WD repeat DCAF13/WDSOF1 family. (489 aa)
FCF2rRNA-processing protein FCF2; Nucleolar protein involved in the early steps of 35S rRNA processing; interacts with Faf1p; member of a transcriptionally co-regulated set of genes called the RRB regulon; essential gene. (217 aa)
DIP2Nucleolar 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. (943 aa)
EMG1Ribosomal RNA small subunit methyltransferase NEP1; Methyltransferase for rRNA; methylates pseudouridine 18S rRNA residue 1191; member of the SPOUT methyltransferase family; required for maturation of 18S rRNA and for 40S ribosomal subunit production independent of methyltransferase activity; forms homodimers; human ortholog is mutated in Bowen-Conradi syndrome, and equivalent yeast mutation affects Emg1p dimerization and localization but not methyltransferase activity; human EMG1 complements lethality of null and ts mutant; Belongs to the class IV-like SAM-binding methyltransferase su [...] (252 aa)
NOP56Nucleolar protein 56; Essential evolutionarily-conserved nucleolar protein; component of the box C/D snoRNP complexes that direct 2'-O-methylation of pre-rRNA during its maturation; overexpression causes spindle orientation defects. (504 aa)
UTP13Nucleolar protein; component of the small subunit (SSU) processome containing the U3 snoRNA that is involved in processing of pre-18S rRNA. (817 aa)
SGD1Suppressor of glycerol defect protein 1; Essential nuclear protein; required for biogenesis of the small ribosomal subunit; has a possible role in the osmoregulatory glycerol response; putative homolog of human NOM1 which is implicated in acute myeloid leukemia. (899 aa)
RPP0Conserved ribosomal protein P0 of the ribosomal stalk; involved in interaction between translational elongation factors and the ribosome; phosphorylated on serine 302; homologous to mammalian ribosomal protein LP0 and bacterial L10. (312 aa)
UTP21U3 small nucleolar RNA-associated protein 21; Subunit of U3-containing 90S preribosome and SSU processome complexes; involved in production of 18S rRNA and assembly of small ribosomal subunit; synthetic defect with STI1 Hsp90 cochaperone; human homolog linked to glaucoma; Small Subunit processome is also known as SSU processome. (939 aa)
UTP14U3 small nucleolar RNA-associated protein 14; Subunit of U3-containing Small Subunit (SSU) processome complex; involved in production of 18S rRNA and assembly of small ribosomal subunit; Belongs to the UTP14 family. (899 aa)
UTP15Nucleolar protein; component of the small subunit (SSU) processome containing the U3 snoRNA that is involved in processing of pre-18S rRNA. (513 aa)
ECM16Essential DEAH-box ATP-dependent RNA helicase specific to U3 snoRNP; predominantly nucleolar in distribution; required for 18S rRNA synthesis. (1267 aa)
RRP5rRNA biogenesis protein RRP5; RNA binding protein involved in synthesis of 18S and 5.8S rRNAs; component of ribosomal small subunit (SSU) processome and 90S preribosome; required for pre-rRNA packaging and compaction of processome into dense terminal balls; part of Mak21p-Noc2p-Rrp5p module that associates with nascent pre-rRNA during transcription with role in biogenesis of large ribosomal subunit; binds single stranded tracts of U's; relocalizes from nucleolus to nucleus upon DNA replication stress. (1729 aa)
IMP4U3 small nucleolar ribonucleoprotein protein IMP4; Component of the SSU processome; SSU processome is required for pre-18S rRNA processing; interacts with Mpp10p; member of a superfamily of proteins that contain a sigma(70)-like motif and associate with RNAs. (290 aa)
KRE33RNA cytidine acetyltransferase; Protein required for biogenesis of the small ribosomal subunit; heterozygous mutant shows haploinsufficiency in K1 killer toxin resistance; essential gene; NAT10, the human homolog, implicated in several types of cancer and premature aging. (1056 aa)
KRI1Protein KRI1; Essential nucleolar protein required for 40S ribosome biogenesis; associate with snR30; physically and functionally interacts with Krr1p; Belongs to the KRI1 family. (591 aa)
ESF2Pre-rRNA-processing protein ESF2; Essential nucleolar protein involved in pre-18S rRNA processing; binds to RNA and stimulates ATPase activity of Dbp8; involved in assembly of the small subunit (SSU) processome. (316 aa)
RCL1RNA 3'-terminal phosphate cyclase-like protein; Endonuclease that cleaves pre-rRNA at site A2 for 18S rRNA biogenesis; subunit of U3-containing 90S preribosome processome complex involved in small ribosomal subunit assembly; stimulates Bms1p GTPase and U3 binding activity; similar to RNA cyclase-like proteins but no cyclase activity detected. (367 aa)
UTP23rRNA-processing protein UTP23; Component of the small subunit processome; involved in 40S ribosomal subunit biogenesis; interacts with snR30 and is required for dissociation of snR30 from large pre-ribosomal particles; has homology to PINc domain protein Fcf1p, although the PINc domain of Utp23p is not required for function; essential protein. (254 aa)
BUD21Bud site selection protein 21; Component of small ribosomal subunit (SSU) processosome; this complex contains U3 snoRNA; required at post-transcriptional step for efficient retrotransposition; absence results in decreased Ty1 Gag:GFP protein levels; originally isolated as bud-site selection mutant that displays a random budding pattern; Belongs to the UTP16 family. (214 aa)
PNO1Pre-rRNA-processing protein 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; contains a KH domain. (274 aa)
NOP58Nucleolar protein 58; Protein involved in producing mature rRNAs and snoRNAs; involved in pre-rRNA processing, 18S rRNA synthesis, and snoRNA synthesis; component of the small subunit processome complex, which is required for processing of pre-18S rRNA. (511 aa)
RRP12Protein required for export of the ribosomal subunits; associates with the RNA components of the pre-ribosomes; has a role in nuclear import in association with Pse1p; also plays a role in the cell cycle and the DNA damage response; contains HEAT-repeats. (1228 aa)
RPS9AProtein component of the small (40S) ribosomal subunit; homologous to mammalian ribosomal protein S9 and bacterial S4; RPS9A has a paralog, RPS9B, that arose from the whole genome duplication. (197 aa)
RPS6AProtein component of the small (40S) ribosomal subunit; homologous to mammalian ribosomal protein S6, no bacterial homolog; phosphorylated on S233 by Ypk3p in a TORC1-dependent manner, and on S232 in a TORC1/2-dependent manner by Ypk1/2/3p; RPS6A has a paralog, RPS6B, that arose from the whole genome duplication. (236 aa)
NAN1NET1-associated nuclear protein 1; U3 snoRNP protein; component of the small (ribosomal) subunit (SSU) processosome containing U3 snoRNA; required for the biogenesis of18S rRNA. (896 aa)
BMS1Ribosome biogenesis protein BMS1; GTPase required for ribosomal subunit synthesis and rRNA processing; required for synthesis of 40S ribosomal subunits and for processing the 35S pre-rRNA at sites A0, A1, and A2; interacts with Rcl1p, which stimulates its GTPase and U3 snoRNA binding activities; has similarity to Tsr1p; Belongs to the TRAFAC class translation factor GTPase superfamily. Bms1-like GTPase family. BMS1 subfamily. (1183 aa)
MRD1Multiple RNA-binding domain-containing protein 1; Essential conserved small ribosomal subunit (40s) synthesis factor; component of the 90S preribosome; required for production of 18S rRNA and small ribosomal subunit; contains five consensus RNA-binding domains and binds to the pre-rRNA at two sites within the 18S region. (887 aa)
RRP9Ribosomal RNA-processing protein 9; Protein involved in pre-rRNA processing; associated with U3 snRNP; component of small ribosomal subunit (SSU) processosome; ortholog of the human U3-55k protein; Belongs to the WD repeat RRP9 family. (573 aa)
NOC4Nucleolar protein; forms a complex with Nop14p that mediates maturation and nuclear export of 40S ribosomal subunits; relocalizes to the cytosol in response to hypoxia. (552 aa)
Your Current Organism:
Saccharomyces cerevisiae
NCBI taxonomy Id: 4932
Other names: ATCC 18824, Candida robusta, Mycoderma cerevisiae, NRRL Y-12632, S. cerevisiae, Saccharomyces capensis, Saccharomyces italicus, Saccharomyces oviformis, Saccharomyces uvarum var. melibiosus, yeast
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