RAD53/YPL153C Summary Help

RAD53 BASIC INFORMATION

Standard Name RAD53 1
Systematic Name YPL153C
Alias LSD1 , MEC2 , SPK1
Feature Type ORF, Verified
Description Protein kinase, required for cell-cycle arrest in response to DNA damage; activated by trans autophosphorylation when interacting with hyperphosphorylated Rad9p; also interacts with ARS1 and plays a role in initiation of DNA replication (2, 3, 4 and see Summary Paragraph)
Name Description RADiation sensitive
GO Annotations All RAD53 GO evidence and references
    View Computational GO annotations for RAD53
Molecular Function
Manually curated
Biological Process
Manually curated
Cellular Component
Manually curated
Regulatory Role
Regulatory modules predicted: cellcycle ( 317 , 227 )
Mutant Phenotype All RAD53 Phenotype details and references
Classical genetics
null
reduction of function
Large-scale survey
null
overexpression
Interactions RAD53 All interactions details and references
457 total interaction(s) for 286 unique genes/features.
Physical Interactions
  • Affinity Capture-MS: 57
  • Affinity Capture-Western: 35
  • Biochemical Activity: 56
  • Co-localization: 1
  • Co-purification: 1
  • Protein-peptide: 3
  • Reconstituted Complex: 5
  • Two-hybrid: 13
Genetic Interactions
  • Dosage Lethality: 6
  • Dosage Rescue: 29
  • Phenotypic Enhancement: 61
  • Phenotypic Suppression: 12
  • Synthetic Growth Defect: 106
  • Synthetic Lethality: 37
  • Synthetic Rescue: 35
Sequence Information
ChrXVI:264191 to 261726 | ORF Map | GBrowse
Note: this feature is encoded on the Crick strand.
Gbrowse
Genetic position: -109 cM
Last Update Coordinates: 1996-07-31 | Sequence: 1996-07-31
Subfeature details
Relative
Coordinates		 Chromosomal
Coordinates		 Most Recent Updates
Coordinates Sequence
CDS 1..2466 264191..261726 1996-07-31 1996-07-31
External Links All Associated Seq | E.C. | Entrez Gene | Entrez RefSeq Protein | MIPS | UniProtKB
Primary SGDIDS000006074

RAD53 RESOURCES

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Click on histogram for expression summary
Expression Summary histogram

ADDITIONAL INFORMATION for RAD53

NOMENCLATURE CONFLICT NOTE

NameRelevanceDescription
SAD1Nomenclature conflictSAD1 has been used to refer to both RAD53/YPL153C, a checkpoint protein involved in DNA repair, and SAD1/YFR005C, a protein involved in mRNA splicing.

SUMMARY PARAGRAPH for RAD53

RAD53 encodes an essential protein kinase required for cell cycle checkpoint function. By modifying the phosphorylation state of protein targets, Rad53p amplifies initial signals from proteins that recognize DNA damage and replication blocks (5, 6, and reviewed in 7). This signal cascade results in the arrest of cells in G1/S, intra-S, or G2/M, transcriptional upregulation of repair genes, transcriptional repression of cyclins, and replication fork stabilization (6, 8, 9, 10, reviewed in 11). Rad53p is also involved in regulating excess levels of histones (12).

Some of the identified targets of Rad53p are the transcriptional regulator Swi6p and the kinases Dun1p and Dbf4p. Activation of these particular targets by Rad53p leads to G1 cyclin induction, ribonucleotide reductase activation, and inhibition of late firing of DNA replication origins, respectively (9, 13, 14, 15).

Rad53p activation occurs both through autophosphorylation and direct phosphorylation by Mec1p (16, 17). Rad53p autophosphorylation is dependent on the presence of Mec1p, and Mec1p-mediated direct phosphorylation appears to depend on the presence of Rad9p (17, 18). Rad9p binds to two Rad53p forkhead-associated (FHA) domains, modular domains that facilitate protein-protein interactions, making Rad53p a suitable substrate for Mec1p (18, 19). The Rad53p N-terminal FHA domain is the interaction site for the type 2C phosphatases Ptc2p and Ptc3p, implicated inhibitors of Rad53p function (20). RAD53 expression has also been shown to depend on the presence of Rad9p (21).

Loss of Rad53p leads to multiple defects, including impaired checkpoint activation, inability to recover from replication blocks, X-ray sensitivity, and excess histone accumulation resulting in slow growth and chromosome loss (6, 10, 22, 12). RAD53 is the homolog of S. pombe CDS1 and human CHK2 (OMIM; 23, 24). Mutations in the human tumor suppressor CHK2 have been associated with sporadic cancer as well as familial breast cancer and Li-Fraumeni syndrome (OMIM; 25, 26).

Last updated: 2006-03-24

REFERENCES CITED ON THIS PAGE [View Complete Literature Guide for RAD53]

1) Sitney, K.  (1989) Personal Communication, Mortimer Map Edition 10
2) Schwartz MF, et al.  (2002) Rad9 phosphorylation sites couple Rad53 to the Saccharomyces cerevisiae DNA damage checkpoint. Mol Cell 9(5):1055-65
3) Toh GW and Lowndes NF  (2003) Role of the Saccharomyces cerevisiae Rad9 protein in sensing and responding to DNA damage. Biochem Soc Trans 31(Pt 1):242-6
4) Dohrmann PR and Sclafani RA  (2006) Novel role for checkpoint Rad53 protein kinase in the initiation of chromosomal DNA replication in Saccharomyces cerevisiae. Genetics 174(1):87-99
5) Weinert TA, et al.  (1994) Mitotic checkpoint genes in budding yeast and the dependence of mitosis on DNA replication and repair. Genes Dev 8(6):652-65
6) Allen JB, et al.  (1994) The SAD1/RAD53 protein kinase controls multiple checkpoints and DNA damage-induced transcription in yeast. Genes Dev 8(20):2401-15
7) Weinert T  (1998) DNA damage checkpoints update: getting molecular. Curr Opin Genet Dev 8(2):185-93
8) Kim EM, et al.  (2002) Phosphorylation of Rph1, a damage-responsive repressor of PHR1 in Saccharomyces cerevisiae, is dependent upon Rad53 kinase. Nucleic Acids Res 30(3):643-8
9) Sidorova JM and Breeden LL  (1997) Rad53-dependent phosphorylation of Swi6 and down-regulation of CLN1 and CLN2 transcription occur in response to DNA damage in Saccharomyces cerevisiae. Genes Dev 11(22):3032-45
10) Lopes M, et al.  (2001) The DNA replication checkpoint response stabilizes stalled replication forks. Nature 412(6846):557-61
11) Elledge SJ  (1996) Cell cycle checkpoints: preventing an identity crisis. Science 274(5293):1664-72
12) Gunjan A and Verreault A  (2003) A Rad53 kinase-dependent surveillance mechanism that regulates histone protein levels in S. cerevisiae. Cell 115(5):537-49
13) Lee SJ, et al.  (2003) Rad53 phosphorylation site clusters are important for Rad53 regulation and signaling. Mol Cell Biol 23(17):6300-14
14) Duncker BP, et al.  (2002) An N-terminal domain of Dbf4p mediates interaction with both origin recognition complex (ORC) and Rad53p and can deregulate late origin firing. Proc Natl Acad Sci U S A 99(25):16087-92
15) Huang M, et al.  (1998) The DNA replication and damage checkpoint pathways induce transcription by inhibition of the Crt1 repressor. Cell 94(5):595-605
16) Ma JL, et al.  (2006) Activation of the checkpoint kinase Rad53 by the phosphatidyl inositol kinase-like kinase Mec1. J Biol Chem 281(7):3954-63
17) Pellicioli A, et al.  (1999) Activation of Rad53 kinase in response to DNA damage and its effect in modulating phosphorylation of the lagging strand DNA polymerase. EMBO J 18(22):6561-72
18) Sweeney FD, et al.  (2005) Saccharomyces cerevisiae Rad9 acts as a Mec1 adaptor to allow Rad53 activation. Curr Biol 15(15):1364-75
19) Durocher D, et al.  (1999) The FHA domain is a modular phosphopeptide recognition motif. Mol Cell 4(3):387-94
20) Leroy C, et al.  (2003) PP2C phosphatases Ptc2 and Ptc3 are required for DNA checkpoint inactivation after a double-strand break. Mol Cell 11(3):827-35
21) Aboussekhra A, et al.  (1996) A novel role for the budding yeast RAD9 checkpoint gene in DNA damage-dependent transcription. EMBO J 15(15):3912-22
22) Game JC  (1975) Radiation-sensitive mutants of yeast. Basic Life Sci 5B:541-4
23) Murakami H and Okayama H  (1995) A kinase from fission yeast responsible for blocking mitosis in S phase. Nature 374(6525):817-9
24) Matsuoka S, et al.  (1998) Linkage of ATM to cell cycle regulation by the Chk2 protein kinase. Science 282(5395):1893-7
25) Bell DW, et al.  (1999) Heterozygous germ line hCHK2 mutations in Li-Fraumeni syndrome. Science 286(5449):2528-31
26) Shaag A, et al.  (2005) Functional and genomic approaches reveal an ancient CHEK2 allele associated with breast cancer in the Ashkenazi Jewish population. Hum Mol Genet 14(4):555-63