HIPHOP chemogenomics database
YBR278W / DPB3 
Third-largest subunit of DNA polymerase II (DNA polymerase epsilon); required to maintain fidelity of chromosomal replication and also for inheritance of telomeric silencing; stabilizes the interaction of Pol epsilon with primer-template DNA, positively affecting the processivity of the polymerase and exonuclease activities of Pol epsilon; mRNA abundance peaks at the G1/S boundary of the cell cycle; DPB3 has a paralog, DLS1, that arose from the whole genome duplication
Zygosity: Homozygous strain
fixedexpanded
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Top fitness defect scores for YBR278W 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 |
|---|---|---|---|---|---|
| 0.147 | 1.33E-17 | YDR205W | MSC2 | hom | Endoplasmic reticulum zinc transporter; part of a heterodimeric transporter with Zrg17p that transfers zinc from the cytosol to the ER lumen; member of the cation diffusion facilitator family of efflux pumps; localizes to ER and nucleus; mutations affect the cellular distribution of zinc and also confer defects in meiotic recombination between homologous chromatids |
| 0.142 | 1.45E-16 | YLR150W | STM1 | hom | Protein required for optimal translation under nutrient stress; perturbs association of Yef3p with ribosomes; involved in TOR signaling; binds G4 quadruplex and purine motif triplex nucleic acid; helps maintain telomere structure; protein abundance increases in response to DNA replication stress; serves as a ribosome preservation factor both during quiescence and recovery |
| 0.137 | 1.82E-15 | YJR054W | KCH1 | hom | Potassium transporter that mediates K+ influx; activates the high-affinity Ca2+ influx system (HACS) during the mating pheromone response; expression is up-regulated in response to alpha factor; localized to sites of polarized growth; similar to Prm6p; member of a fungal-specific gene family; potential Cdc28p substrate |
| 0.137 | 2.03E-15 | YOR231W | MKK1 | hom | MAPKK involved in the protein kinase C signaling pathway; involved in control of cell integrity; upon activation by Bck1p phosphorylates downstream target, Slt2p; functionally redundant with Mkk2p; MKK1 has a paralog, MKK2, that arose from the whole genome duplication |
| 0.129 | 7.34E-14 | YDL025C | RTK1 | hom | Putative protein kinase, potentially phosphorylated by Cdc28p; interacts with ribosome biogenesis factors, Cka2, Gus1 and Arc1; protein abundance increases in response to DNA replication stress |
| 0.126 | 2.59E-13 | YML016C | PPZ1 | hom | Serine/threonine protein phosphatase Z, isoform of Ppz2p; involved in regulation of potassium transport, which affects osmotic stability, cell cycle progression, and halotolerance |
| 0.125 | 4.17E-13 | YKL033W-A_p | YKL033W-A_p | hom | Putative protein of unknown function; similar to uncharacterized proteins from other fungi |
| 0.124 | 4.53E-13 | YGR058W | PEF1 | hom | Penta-EF-hand protein required for polar bud growth and cell wall abscission; binds calcium and zinc with different affinity; localizes to bud site in G1, bud neck in G2; binds to Sec31p and modulates COPII coat assembly |
| 0.124 | 6.69E-13 | YIL148W | RPL40A | hom | Ubiquitin-ribosomal 60S subunit protein L40A fusion protein; cleaved to yield ubiquitin and ribosomal protein L40A; ubiquitin may facilitate assembly of the ribosomal protein into ribosomes; homologous to mammalian ribosomal protein L40, no bacterial homolog; RPL40A has a paralog, RPL40B, that arose from the whole genome duplication; relative distribution to the nucleus increases upon DNA replication stress |
| 0.119 | 5.25E-12 | YCL005W | LDB16 | hom | Protein of unknown function; null mutants have decreased net negative cell surface charge; GFP-fusion protein expression is induced in response to the DNA-damaging agent MMS; native protein is detected in purified mitochondria |
| 0.116 | 1.62E-11 | YHL039W | EFM1 | hom | Lysine methyltransferase involved in the monomethylation of eEF1A (Tef1p/Tef2p); SET-domain family member; predicted involvement in ribosome biogenesis; green fluorescent protein (GFP)-fusion protein localizes to the cytoplasm |
| 0.111 | 1.13E-10 | YJL080C | SCP160 | hom | Essential RNA-binding G protein effector of mating response pathway, mainly associated with nuclear envelope and ER, interacts in mRNA-dependent manner with translating ribosomes via multiple KH domains, similar to vertebrate vigilins |
| 0.110 | 1.60E-10 | YMR168C | CEP3 | het | Essential kinetochore protein, component of the CBF3 complex that binds the CDEIII region of the centromere; contains an N-terminal Zn2Cys6 type zinc finger domain, a C-terminal acidic domain, and a putative coiled coil dimerization domain |
| 0.109 | 2.26E-10 | YNL314W | DAL82 | hom | Positive regulator of allophanate inducible genes; binds a dodecanucleotide sequence upstream of all genes that are induced by allophanate; contains an UISALL DNA-binding, a transcriptional activation, and a coiled-coil domain |
| 0.107 | 4.22E-10 | YCR024C-A | PMP1 | hom | Regulatory subunit for the plasma membrane H(+)-ATPase Pma1p; small single-membrane span proteolipid; forms unique helix and positively charged cytoplasmic domain that is able to specifically segregate phosphatidylserines; PMP1 has a paralog, PMP2, that arose from the whole genome duplication |