CHK1 serine/threonine protein kinase CHK1 [Saccharomyces cerevisiae S288C] - Gene

Summary

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Official Symbol: CHK1
Official Full Name: serine/threonine protein kinase CHK1
Primary source: SGD:S000000478
Locus tag: YBR274W
See related: AllianceGenome:SGD:S000000478; FungiDB:YBR274W; VEuPathDB:YBR274W
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 replication fork processing. Located in nucleus. Human ortholog(s) of this gene implicated in pancreatic cancer. Orthologous to human CHEK1 (checkpoint kinase 1). [provided by Alliance of Genome Resources, Oct 2024]
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Genomic context

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See CHK1 in Genome Data Viewer

Location:: chromosome: II

Exon count:: 1

Sequence:: Chromosome: II; NC_001134.8 (749594..751177)

Chromosome II - NC_001134.8 Genomic Context describing neighboring genes

Genomic regions, transcripts, and products

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Go to reference sequence details

Genomic Sequence:: NC_001134.8

Go to nucleotide: Graphics FASTA GenBank

Bibliography

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GeneRIFs: Gene References Into Functions

What's a GeneRIF?

Chk1 has a redundant role in the control of DIC or that DIC is redundant for maintaining genome stability
Title: Suppression of allelic recombination and aneuploidy by cohesin is independent of Chk1 in Saccharomyces cerevisiae.
We suggest a novel model for Chk1 activation where Cdc28 regulates the constitutive interaction of Rad9 and Chk1. The Rad9/Chk1 complex is then recruited at sites of DNA damage where activation of Chk1 requires additional DDR-specific protein kinases.
Title: Site-specific phosphorylation of the DNA damage response mediator rad9 by cyclin-dependent kinases regulates activation of checkpoint kinase 1.
a single amino acid substitution in the C terminus, which could lead to an allosteric change in Chk1, allows it to bypass the requirement of the conserved ATR(Mec1) phosphorylation sites for checkpoint function.
Title: ATRMec1 phosphorylation-independent activation of Chk1 in vivo.
RAD9, CHK1 and PDS1 are required for elevated homologous recombination in a mec1 (ATR) hypomorphic mutant.
Title: The Saccharomyces cerevisiae checkpoint genes RAD9, CHK1 and PDS1 are required for elevated homologous recombination in a mec1 (ATR) hypomorphic mutant.
CHK1 mutants are not defective in double-strand break repair-initiated sister chromatid exchange, after exposure to DNA damaging agents.
Title: Saccharomyces cerevisiae RAD53 (CHK2) but not CHK1 is required for double-strand break-initiated SCE and DNA damage-associated SCE after exposure to X rays and chemical agents.
The observations in the chk1Delta/chk1Delta mutant strain suggest that constitutive nonhomologous end-joining is involved in the repair of BLM-induced DSBs.
Title: Roles of Saccharomyces cerevisiae RAD17 and CHK1 checkpoint genes in the repair of double-strand breaks in cycling cells.
Chk1p has a role in the intra-S-phase checkpoint activated when cells replicate their DNA
Title: A role for Saccharomyces cerevisiae Chk1p in the response to replication blocks.
Chk1-Pds1 checkpoint has roles in preventing tolerance of persistent single-strand breaks in Saccharomyces cerevisiae
Title: Abrogation of the Chk1-Pds1 checkpoint leads to tolerance of persistent single-strand breaks in Saccharomyces cerevisiae.

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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	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

Process	Evidence Code	Pubs
involved_in DNA damage checkpoint signaling	IDA Inferred from Direct Assay more info	PubMed
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
involved_in mitotic G2 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
is_active_in cytoplasm	IBA Inferred from Biological aspect of Ancestor more info
is_active_in nucleus	IBA Inferred from Biological aspect of Ancestor more info
located_in nucleus	IEA Inferred from Electronic Annotation more info
located_in nucleus	IPI Inferred from Physical Interaction more info	PubMed
is_active_in site of double-strand break	IBA Inferred from Biological aspect of Ancestor more info

General protein information

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Preferred Names: serine/threonine protein kinase CHK1

NP_009833.1

EC 2.7.11.1

Serine/threonine kinase and DNA damage checkpoint effector; mediates cell cycle arrest via phosphorylation of Pds1p; phosphorylated by checkpoint signal transducer Mec1p; homolog of S. pombe and mammalian Chk1 checkpoint kinase

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_001134.8 Reference assembly

Range

749594..751177

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GenBank, FASTA, Sequence Viewer (Graphics)

mRNA and Protein(s)

NM_001178622.1 → NP_009833.1 TPA: serine/threonine protein kinase CHK1 [Saccharomyces cerevisiae S288C]

See identical proteins and their annotated locations for NP_009833.1

Status: REVIEWED

UniProtKB/Swiss-Prot

D6VQS0, P38147

UniProtKB/TrEMBL

A6ZLL3, B3LMN8, B5VEM0, D3UF22, G2W9S8, N1PAW5

Conserved Domains (1) summary

cl21453
Location:13 → 281

PKc_like; Protein Kinases, catalytic domain