5T2S

Structure of the FHA1 domain of Rad53 bound simultaneously to the BRCT domain of Dbf4 and a phosphopeptide.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.207 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

'AND' logic gates at work: Crystal structure of Rad53 bound to Dbf4 and Cdc7.

Almawi, A.W.Matthews, L.A.Myrox, P.Boulton, S.Lai, C.Moraes, T.Melacini, G.Ghirlando, R.Duncker, B.P.Guarne, A.

(2016) Sci Rep 6: 34237-34237

  • DOI: 10.1038/srep34237
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Forkhead-associated (FHA) domains are phosphopeptide recognition modules found in many signaling proteins. The Saccharomyces cerevisiae protein kinase Rad53 is a key regulator of the DNA damage checkpoint and uses its two FHA domains to interact with ...

    Forkhead-associated (FHA) domains are phosphopeptide recognition modules found in many signaling proteins. The Saccharomyces cerevisiae protein kinase Rad53 is a key regulator of the DNA damage checkpoint and uses its two FHA domains to interact with multiple binding partners during the checkpoint response. One of these binding partners is the Dbf4-dependent kinase (DDK), a heterodimer composed of the Cdc7 kinase and its regulatory subunit Dbf4. Binding of Rad53 to DDK, through its N-terminal FHA (FHA1) domain, ultimately inhibits DDK kinase activity, thereby preventing firing of late origins. We have previously found that the FHA1 domain of Rad53 binds simultaneously to Dbf4 and a phosphoepitope, suggesting that this domain functions as an 'AND' logic gate. Here, we present the crystal structures of the FHA1 domain of Rad53 bound to Dbf4, in the presence and absence of a Cdc7 phosphorylated peptide. Our results reveal how the FHA1 uses a canonical binding interface to recognize the Cdc7 phosphopeptide and a non-canonical interface to bind Dbf4. Based on these data we propose a mechanism to explain how Rad53 enhances the specificity of FHA1-mediated transient interactions.


    Organizational Affiliation

    Department of Biochemistry and Biomedical Sciences, ON, Canada.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
DDK kinase regulatory subunit DBF4,Serine/threonine-protein kinase RAD53
A, C
264Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: DBF4 (DNA52), RAD53 (MEC2, SAD1, SPK1)
EC: 2.7.12.1
Find proteins for P32325 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to Gene View: DBF4
Go to UniProtKB:  P32325
Find proteins for P22216 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P22216
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
ASP-GLY-GLU-SER-TPO-ASP-GLU-ASP-ASP
B, D
12Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: CDC7 (OAF2)
EC: 2.7.11.1
Find proteins for P06243 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to Gene View: CDC7
Go to UniProtKB:  P06243
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download SDF File 
Download CCD File 
A, C, D
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
TPO
Query on TPO
B, D
L-PEPTIDE LINKINGC4 H10 N O6 PTHR
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.207 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 64.520α = 90.00
b = 87.260β = 94.01
c = 66.150γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
XDSdata scaling
PHASERphasing
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Canadian Institutes of Health ResearchCanadaMOP-67189

Revision History 

  • Version 1.0: 2016-10-12
    Type: Initial release
  • Version 1.1: 2016-10-19
    Type: Structure summary