Proteomics

Dataset Information

0

Yeast - phosphoproteome - Yeast PP4 Interacts with ATR Homolog Ddc2-Mec1 and Regulates Checkpoint Signaling


ABSTRACT: To find the Mec1 targets that are responsible for mec1-100 suppression on HU, we performed a quantitative phosphoproteomic study. Specifically, we screened for modifications that are downregulated in mec1-100, compensated by pph3delta, and left unaffected by rad53delta. To eliminate contributions from Tel1, we used a tel1delta mec1-100 double mutant in the screen. Prior to extraction of proteins, the cultures were arrested in G1 by alpha-factor and released into S phase in the presence of HU. Samples were analyzed in triplicates.

INSTRUMENT(S): LTQ Orbitrap Velos

ORGANISM(S): Saccharomyces Cerevisiae (baker's Yeast)

TISSUE(S): Cell Culture

SUBMITTER: Ragna Sack  

LAB HEAD: Susan M Gasser

PROVIDER: PXD001492 | Pride | 2015-01-12

REPOSITORIES: Pride

Dataset's files

Source:
Action DRS
131114_1981-1_3uL.raw Raw
131114_1981-2_3uL.raw Raw
131114_1981-3_3uL.raw Raw
131115_7373-1_3uL.raw Raw
131115_7373-2_3uL.raw Raw
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Publications


Mec1-Ddc2 (ATR-ATRIP) controls the DNA damage checkpoint and shows differential cell-cycle regulation in yeast. To find regulators of Mec1-Ddc2, we exploited a mec1 mutant that retains catalytic activity in G2 and recruitment to stalled replication forks, but which is compromised for the intra-S phase checkpoint. Two screens, one for spontaneous survivors and an E-MAP screen for synthetic growth effects, identified loss of PP4 phosphatase, pph3Δ and psy2Δ, as the strongest suppressors of mec1-10  ...[more]

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