HIPHOP chemogenomics database
YER021W / RPN3 
Essential, non-ATPase regulatory subunit of the 26S proteasome lid, similar to the p58 subunit of the human 26S proteasome; temperature-sensitive alleles cause metaphase arrest, suggesting a role for the proteasome in cell cycle control
Zygosity: Heterozygous strain
fixedexpanded
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Top fitness defect scores for YER021W deletion by condition
Download Fitness data (tab-delimited text) (excel) |
Cofit Genes
Download Cofitness data (tab-delimited text) (excel)| Correlation | pval | ORF | Gene | Zygosity | Description |
|---|---|---|---|---|---|
| 0.389 | 8.62E-122 | YDL147W | RPN5 | het | Subunit of the COP9 signalosome (CSN) and non-ATPase regulatory subunit of the 26S proteasome lid, similar to mammalian p55 subunit and to another S. cerevisiae regulatory subunit, Rpn7p; Rpn5p is an essential protein |
| 0.380 | 1.62E-115 | YGL048C | RPT6 | het | ATPase of the 19S regulatory particle of the 26S proteasome; one of six ATPases of the regulatory particle; involved in the degradation of ubiquitinated substrates; bound by ubiquitin-protein ligases Ubr1p and Ufd4p; localized mainly to the nucleus throughout the cell cycle; protein abundance increases in response to DNA replication stress |
| 0.355 | 4.18E-100 | YOR117W | RPT5 | het | One of six ATPases of the 19S regulatory particle of the 26S proteasome involved in the degradation of ubiquitinated substrates; recruited to the GAL1-10 promoter region upon induction of transcription; similar to human TBP1 |
| 0.345 | 1.07E-94 | YDL205C | HEM3 | het | Porphobilinogen deaminase, catalyzes the conversion of 4-porphobilinogen to hydroxymethylbilane, the third step in heme biosynthesis; localizes to the cytoplasm and nucleus; expression is regulated by Hap2p-Hap3p, but not by levels of heme |
| 0.319 | 2.31E-80 | YDR394W | RPT3 | het | One of six ATPases of the 19S regulatory particle of the 26S proteasome involved in the degradation of ubiquitinated substrates; substrate of N-acetyltransferase B |
| 0.268 | 2.87E-56 | YDR047W | HEM12 | het | Uroporphyrinogen decarboxylase, catalyzes the fifth step in the heme biosynthetic pathway; localizes to both the cytoplasm and nucleus; a hem12 mutant has phenotypes similar to patients with porphyria cutanea tarda |
| 0.264 | 1.57E-54 | YDR427W | RPN9 | het | Non-ATPase regulatory subunit of the 26S proteasome; has similarity to putative proteasomal subunits in other species; null mutant is temperature sensitive and exhibits cell cycle and proteasome assembly defects; protein abundance increases in response to DNA replication stress |
| 0.254 | 2.26E-50 | YDL097C | RPN6 | het | Essential, non-ATPase regulatory subunit of the 26S proteasome lid; required for the assembly and activity of the 26S proteasome; the human homolog (S9 protein) partially rescues Rpn6p depletion; protein abundance increases in response to DNA replication stress |
| 0.244 | 9.36E-47 | YBR192W | RIM2 | het | Mitochondrial pyrimidine nucleotide transporter; imports pyrimidine nucleoside triphosphates and exports pyrimidine nucleoside monophosphates; member of the mitochondrial carrier family |
| 0.236 | 1.29E-43 | YFR004W | RPN11 | het | Metalloprotease subunit of the 19S regulatory particle of the 26S proteasome lid; couples the deubiquitination and degradation of proteasome substrates; involved, independent of catalytic activity, in fission of mitochondria and peroxisomes; protein abundance increases in response to DNA replication stress |
| 0.220 | 6.80E-38 | YMR203W | TOM40 | het | Component of the TOM (translocase of outer membrane) complex responsible for recognition and initial import steps for all mitochondrially directed proteins; constitutes the core element of the protein conducting pore |
| 0.209 | 1.68E-34 | YKL195W | MIA40 | het | Oxidoreductase that mediates mitochondrial intermembrane space import; substrates include small proteins containing twin cysteine motifs; acts in concert with Erv1p, which oxidizes the cysteine residues of Mia40p to comprise a disulfide relay system that catalyzes import; also mediates folding of Atp23p |
| 0.204 | 6.83E-33 | YIL075C | RPN2 | het | Subunit of the 26S proteasome; substrate of the N-acetyltransferase Nat1p; protein abundance increases in response to DNA replication stress |
| 0.199 | 2.01E-31 | YOR259C | RPT4 | het | One of six ATPases of the 19S regulatory particle of the 26S proteasome involved in degradation of ubiquitinated substrates; contributes preferentially to ERAD; required for spindle pole body duplication; mainly nuclear localization |
| 0.195 | 3.27E-30 | YEL034W | HYP2 | het | Translation elongation factor eIF-5A; may function in translation initiation; structural homolog of bacterial EF-P; undergoes an essential hypusination modification; HYP2 has a paralog, ANB1, that arose from the whole genome duplication |