DUN1 serine/threonine protein kinase DUN1 [Saccharomyces cerevisiae S288C] - Gene

Summary

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Official Symbol: DUN1
Official Full Name: serine/threonine protein kinase DUN1
Primary source: SGD:S000002259
Locus tag: YDL101C
See related: AllianceGenome:SGD:S000002259; FungiDB:YDL101C; VEuPathDB:YDL101C
Gene type: protein coding
RefSeq status: REVIEWED
Organism: Saccharomyces cerevisiae S288C (strain: S288C)
Lineage: Eukaryota; Fungi; Dikarya; Ascomycota; Saccharomycotina; Saccharomycetes; Saccharomycetales; Saccharomycetaceae; Saccharomyces
Summary: Enables protein serine/threonine kinase activity. Involved in DNA damage checkpoint signaling. Acts upstream of or within double-strand break repair via nonhomologous end joining and replication fork processing. Located in nucleus. Human ortholog(s) of this gene implicated in several diseases, including Li-Fraumeni syndrome 2; breast cancer (multiple); colorectal cancer; osteosarcoma; and prostate cancer. Orthologous to human CHEK2 (checkpoint kinase 2). [provided by Alliance of Genome Resources, Oct 2024]
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Genomic context

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See DUN1 in Genome Data Viewer

Location:: chromosome: IV

Exon count:: 1

Sequence:: Chromosome: IV; NC_001136.10 (280307..281848, complement)

Chromosome IV - NC_001136.10 Genomic Context describing neighboring genes

Genomic regions, transcripts, and products

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Go to reference sequence details

Genomic Sequence:: NC_001136.10

Go to nucleotide: Graphics FASTA GenBank

Bibliography

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GeneRIFs: Gene References Into Functions

What's a GeneRIF?

Histones on fire: the effect of Dun1 and Mrc1 on origin firing and replication of hyper-acetylated genomes.
Title: Histones on fire: the effect of Dun1 and Mrc1 on origin firing and replication of hyper-acetylated genomes.
A novel role for Dun1 in the regulation of origin firing upon hyper-acetylation of H3K56.
Title: A novel role for Dun1 in the regulation of origin firing upon hyper-acetylation of H3K56.
Dun1, a Chk2-related kinase, is the central regulator of securin-separase dynamics during DNA damage signaling.
Title: Dun1, a Chk2-related kinase, is the central regulator of securin-separase dynamics during DNA damage signaling.
We show here that Exo1 phosphorylation is Dun1-independent and Rad53-dependent in response to DNA damage or dNTP depletion, and in both situations Exo1 is similarly phosphorylated at multiple sites.
Title: Exo1 phosphorylation inhibits exonuclease activity and prevents fork collapse in rad53 mutants independently of the 14-3-3 proteins.
Study identified that a conserved GSK-3 kinase Mck1 cooperates with Dun1 in regulating replication threats response in yeasts and reveal the division-of-labor between Mck1 and Dun1 at the S-phase checkpoint pathway to fine-tune dNTP homeostasis.
Title: Mck1 defines a key S-phase checkpoint effector in response to various degrees of replication threats.
Mitochondrial mutations occurring more frequently in yeast devoid of Rrm3, a DNA helicase involved in rDNA replication, are also dependent on Dun1.
Title: Activation of Dun1 in response to nuclear DNA instability accounts for the increase in mitochondrial point mutations in Rad27/FEN1 deficient S. cerevisiae.
these results reveal that, in response to iron starvation, Dun1 kinase phosphorylates Dif1 to stimulate Rnr2-Rnr4 relocalization to the cytoplasm and promote RNR function.
Title: Yeast Dun1 Kinase Regulates Ribonucleotide Reductase Small Subunit Localization in Response to Iron Deficiency.
levels of the Sml1 protein specifically decrease in response to both nutritional and genetic Fe deficiencies in a Dun1-dependent but Mec1/Rad53- and Aft1-independent manner
Title: Yeast Dun1 kinase regulates ribonucleotide reductase inhibitor Sml1 in response to iron deficiency.
DIN7 repression by Dun1 can be released upon DNA damage
Title: The yeast checkpoint kinase Dun1 downregulates DIN7 in the absence of DNA damage.
MEC1 (ATR), RAD53, and DUN1 have roles in stimulation of sister chromatid exchanges and mutation by aflatoxin B1-DNA adducts in Saccharomyces cerevisiae
Title: Stimulation of sister chromatid exchanges and mutation by aflatoxin B1-DNA adducts in Saccharomyces cerevisiae requires MEC1 (ATR), RAD53, and DUN1.

Submit: New GeneRIF Correction See all GeneRIFs (13)

Pathways from PubChem

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Interactions

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Products	Interactant	Other Gene	Complex	Source	Pubs	Description

General gene information

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Homology

Orthologs from OrthoDB

Gene Ontology Provided by SGD

Function	Evidence Code	Pubs
enables ATP binding	IEA Inferred from Electronic Annotation more info
enables histone H2AS1 kinase activity	IEA Inferred from Electronic Annotation more info
enables protein kinase activity	HDA more info	PubMed
enables protein kinase activity	IDA Inferred from Direct Assay more info	PubMed
enables protein kinase activity	IEA Inferred from Electronic Annotation more info
enables protein serine kinase activity	IEA Inferred from Electronic Annotation more info
enables protein serine/threonine kinase activity	IBA Inferred from Biological aspect of Ancestor more info
enables protein serine/threonine kinase activity	IDA Inferred from Direct Assay more info	PubMed
enables protein serine/threonine kinase activity	IEA Inferred from Electronic Annotation more info
enables protein serine/threonine kinase activity	IMP Inferred from Mutant Phenotype more info	PubMed

Process	Evidence Code	Pubs
involved_in DNA damage checkpoint signaling	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in DNA damage response	IEA Inferred from Electronic Annotation more info
involved_in chromatin remodeling	IEA Inferred from Electronic Annotation more info
acts_upstream_of_or_within double-strand break repair via nonhomologous end joining	IGI Inferred from Genetic Interaction more info	PubMed
acts_upstream_of_or_within double-strand break repair via nonhomologous end joining	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in mitotic DNA damage checkpoint signaling	IBA Inferred from Biological aspect of Ancestor more info
involved_in phosphorylation	IEA Inferred from Electronic Annotation more info
involved_in protein phosphorylation	IEA Inferred from Electronic Annotation more info
acts_upstream_of_or_within replication fork processing	IGI Inferred from Genetic Interaction more info	PubMed

Component	Evidence Code	Pubs
located_in nucleus	HDA more info	PubMed
is_active_in nucleus	IBA Inferred from Biological aspect of Ancestor more info
located_in nucleus	IEA Inferred from Electronic Annotation more info

General protein information

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Preferred Names: serine/threonine protein kinase DUN1

NP_010182.1

EC 2.7.11.1

Cell-cycle checkpoint S/T protein kinase; required for transient G2/M arrest after DNA damage, damage-induced transcription, and nuclear-to-cytoplasmic redistribution of Rnr2p-Rnr4p after genotoxic stress and iron deprivation; phosphorylates repair protein Rad55p, transcriptional repressor Sml1p, superoxide dismutase, and ribonucleotide reductase inhibitors Crt1p and Dif1p; functions in the Mec1p pathway to regulate dNTP pools and telomere length; postreplicative repair role

NCBI Reference Sequences (RefSeq)

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Genome Annotation

The following sections contain reference sequences that belong to a specific genome build. Explain

Reference assembly

Genomic

NC_001136.10 Reference assembly

Range

280307..281848 complement

Download

GenBank, FASTA, Sequence Viewer (Graphics)

mRNA and Protein(s)

NM_001180160.1 → NP_010182.1 TPA: serine/threonine protein kinase DUN1 [Saccharomyces cerevisiae S288C]

See identical proteins and their annotated locations for NP_010182.1

Status: REVIEWED

UniProtKB/Swiss-Prot

D6VRP9, P39009

UniProtKB/TrEMBL

A6ZXM8

Conserved Domains (2) summary

cd00060
Location:36 → 136

FHA; Forkhead associated domain (FHA); found in eukaryotic and prokaryotic proteins. Putative nuclear signalling domain. FHA domains may bind phosphothreonine, phosphoserine and sometimes phosphotyrosine. In eukaryotes, many FHA domain-containing proteins ...

cd05117
Location:199 → 479

STKc_CAMK; The catalytic domain of CAMK family Serine/Threonine Kinases