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Table 1 Top 39 characterized sensitive deletion strains found in the HIP-HOP assays above 3.5 log 2 ratio

From: Identification of yeast genes that confer resistance to chitosan oligosaccharide (COS) using chemogenomics

probeid

COS-5.44 (91.1 μg/ml) (log2ratio)

Gene

SGD_description

Fitness score (avg)2

Deletion pool source3

YBR 164C

4.686

ARL1

Soluble GTPase of the RAS superfamily, with a role in regulation of membrane traffic mainly regulates pottassium influx; similar to ADP-ribosylation factor.

0.756

HOM

YBR257W

3.534

POP4

subunit of both RNase MRP, which cleaves pre-rRNA, and nuclear RNase P, which cleaves tRNA precursors to generate mature 5′ends; binds to the RPR1 RNA subunit in RNase P.

0.9963

HET

YDL060W

3.769

TSR1

Protein required for processing of 20S pre-rRNA in the cytoplasm associates with pre-40S ribosomal particles.

0.8887

HET

YDL213C

5.101

NOP6

rRNA-binding protein required for 40S ribosomal subunit biogenesis; contains an RNA recognition motif (RRM).

0.8854

HOM

YDR300C

4.371

PRO1

Gamma-glutamyl kinase, catalyzes the first step in proline biosynthesis.

0.8521

HOM

YDR320C

3.571

SWA2

Auxilin-like protein involved in vesicular transfort; clathrin-binding protein required for uncoating of clathrin-coated vesicles

0.9621

HOM

YDR324C

3.636

UTP4

Subunit of U3 involved in production of 18S rRNA, assembly of small ribosomal subunit and transcription of 35S rRNA transcript, member of t-Utp subcomplex.

0.761

HET

YDR389W

4.281

SAC7

GTPase activating protein (GAP) for Rho1p, involved in signaling to the actin cytoskeleton, null mutations suppress tor2 mutations and temperature sensitive mutations in actin; potential Cdc28p substrate.

0.8768

HOM

YDR455C

3.577

YDR455C

Partially overlaps the verified gene YDR456W.

0.9312

HOM

YGL045W

4.229

RIM8

Protein involved in proteolytic activation of Rim 101p in response to alkaline pH; interacts with ESCRT-1 subunits Stp22p and Vps28p; member of the arrestin-related trafficking adaptor family.

0.896

HOM

YGR056W

3.72

RSG1

Component of the RSC chromatin remodeling complex; required for expression of mid-late sporulation-specific genes.

0.8656

HOM

YGR122W

3.719

YGR122W

Probable ortholog of A. nidulans PalC, which is involved in pH regulation and binds to the ESCRT-III complex; null mutant does not properly process Rim 101p and has decreased resistance to rapamycin.

0.9913

HOM

YGR246C

3.887

BRF1

TFFIIIB B-related factor, one of three subunits of RNA polymerase III transcription initiation factor TFFIIIB, binds TFIIIC and TBP and recruits RNA pol III to promoters, amino-terminal half is homologous to TFIIB.

0.9782

HET

YHL009C

3.625

YAP3

Basic leucine zipper (bZIP) transcription factor.

0.8854

 

YIL019C

3.59

FAF1

Protein required to pre-rRNA processing and 40S ribosomal subunit assembly.

0.9603

HET

YIL022W

3.931

TIM44

Essential component of the Translocase of the inner Metochondrial membrane; tethers the import motor and regulatory factors (PAM complex) to the translocation channel (Tim23p-Tim17p core complex).

0.8167

HET

YIL048W

3.83

NEO1

Putative aminophospolipid translocase (flippase) involved in endocytosis and vacuolar biogenesis.

1.0734

HET

YIL075C

3.653

RPN2

Subunit of the 26Sproteasome, substrate of the N-acetyltransferase Nat1p.

0.9832

HET

YIL154C

4.315

IMP2

Transcriptional activator involved in maintenance of ion homeostasis and protection against DNA damage caused by bleomycin and other oxidants.

0.2516

HOM

YJL002C

3.515

OST1

Alpha subunit of the oligosaccharyltransferase complex of the ER lumen, which catalyzes asparagine-linked glycosylation of newly synthesized proteins.

1.0555

HET

YGL188C

3.656

BUD19

ORF overlaps the verified gene RPL39 by 88%f; diploid mutants displays a weak budding pattern phenotype in a systematic assay.

1.0087

HOM

YJR102C

3.755

VPS25

Component of the ESCRT-II complex, which is involved in ubiquitin -dependent sorting of proteins into the endosome.

1.0011

HOM

YKL114C

4.271

APN1

Apurinic/apyrimidinic endonuclease, 3′-repair diesterase involved in repair of DNA damage by oxidation and alkylating agents; also functions as a 3′-5′ exonuclease to repair 7,8-dihydro-8-oxodeoxyguanosine.

0.8878

HOM

YKR024C

3.506

DPB7

Putative ATP-dependent RNA helicase of the dead -box family involved in ribosomal biogenesis.

0.9795

HOM

YKR025W

4.622

SNF7

One of four subunits of the endosomal sorting complex required for transport III (ESCRT-III); involved in the sorting of transmembrane proteins into the multivesicular body (MVB) pathway.

0.8599

HOM

YLR100W

3.929

ERG27

3-keto sterol reductase, catalyzes of the last three steps required to removed two C-4 methyl groups from an intermediate in engosterol biosynthesis; mutants are sterol auxotrophs.

0.8809

HET

YLR147C

3.525

SMD3

Core Sm protein Sm D3; part of heteroheptameric complex that is part of the spliceosomal U1, U2, U4, and U5 snRNPs; homolog of human Sm D3.

1.0582

HET

YLR223C

3.633

IFM1

Coactivator that regulates transcription of ribosomal protein (RP) genes; recruited to RP gene promoters during optimal growth conditions via Fhl1p; subunit of CURI, a complex that coordinates RP production and pre-rRNA processing.

0.9691

HET

YLR378C

3.539

SEC61

Essential subunit of Sec61 complex (Sec61p, Sbh1p, and Sss1p); with Sec63 complex forms a channel for SRP-dependent protein import and retrograde transport of misfolded proteins out of the ER.

0.8717

HET

YNL025C

3.581

SSN8

Cyclin-like component of the RNA polymerase II holoenzyme, involved in phosphorylation of the RNA polymerase II C-terminal domain, in glucose repression and telomere maintenance.

0.823

HOM

YNL287W

3.66

SEC21

Gamma subunit of coatomer, a heptameric protein complex that together with Arf1p forms the COPI coat; involved in ER to Golgi transport of selective cargo.

0.8959

HET

YNR046W

4.047

TRM112

Subunit of tRNA methyltransferase (MTase) complexes in combination with Trm9p and Trm11p; subunit of complex with Mtq2p that methylates Sup45p (eRF1) in the temary complex eRF1-eRF3-GTP.

0.9906

HET

YOR014W

3.844

RTS1

B-type regulatory subunit of protein phospatase 2A (PP2A); homolog of the mammalian B’subunit of PP2A.

0.9832

HOM

YOR030W

3.669

DFG16

Probable multiple transmembrane protein, involved in diploid invasive and pseudohyphal growth upon nitrogen starvation; required for accumulation of processed Rim101p.

1.0307

HOM

YOR080W

4

DIA2

Origin-binding F-box protein that forms an SCF ubiquitin ligase complex with Skp1p and Cdc53p; plays a role in DNA replication, involved in invasive and pseudohyphal growth.

1.1312

HOM

YOR117W

3.506

RPT5

One of the six ATPases of the 19S regulatory particle (26S proteasome) involved in the degradation of ubiquintinated substrates; recruited to the GAL1-10 promoter region upon induction of transcription; similar to human TBP1.

0.8955

HET

YOR244W

3.5

ESA1

Catalytic subunit of the histone acetyltransferase complex (NuA4) that acetylates four conserved internal lysines of histone H4N-terminal tail; required for cell cycle progression and transcriptional silencing at the rDNA locus.

0.8716

HET

YPL002C

3.679

SNF8

Component of the ESCRT-II complex, which is involved in ubiquitin-dependent sorting of proteins into the endosome; appears to be functionally related to SNF7; involved in glucose derepression.

0.8925

HOM

YPR139C

3.643

VPS66

Cytoplasmic protcin of unknown function involved in vacuolar protcin sorting.

0.8768

HOM

  1. 1 COS-5.44 log2 ratio is calculated from tag4 array data for each tag of each deletion strain. COS-5.44 log2 ratio = log2 (μc - bg)/(μt - bg), where μc is the mean intensity of the control sample, μt is the mean intensity of the treated samples, and bg is the mean intensity of the unassigned probes. This score is proportional to the log2 ratio of cells present in the control sample versus the treatment sample (i.e. deletion strains exposed to 91.1 μg/ml of COS) [24].
  2. 2 Fitness score (W) is estimated from the average growth curves (as measured by optical density) of a given strain in the presence and absence of COS after 20 h. The fitness scores from three individual colonies of each deletion strain grown in triplicate (i.e. 9 cultures for each strain) were used to calculate the average. This score takes into account the growth of the wild type and deletion strain in control conditions as well as treatment conditions. W c  = wtc/stc; Wt = wtt/stt, where W c is the fitness score under control (no drug) conditions, W t is the fitness score after treatment, wt is doubling time of wild type strain, st is doubling time of the deletion strain, c is control conditions, t is treatment (COS) conditions. Normalized fitness (W) = avg Wt/avg Wc[24]. A fitness score less than 1 indicates that the strain is sensitive [24]. A minimum difference of 0.1 (10%) was used as a cut-off to consider a strain sensitive.
  3. 3 Deletion pool source identifies which pool of deletion strains the deleted strain came from. HET - heterozygous essential deletions strains, HOM - homozygous deletion strains.