4XHL

Structure of S. cerevisiae Hrr25 1-394 (K38R mutant)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.01 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.267 
  • R-Value Observed: 0.268 

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Ligand Structure Quality Assessment 


This is version 1.3 of the entry. See complete history


Literature

Structure of the Saccharomyces cerevisiae Hrr25:Mam1 monopolin subcomplex reveals a novel kinase regulator.

Ye, Q.Ur, S.N.Su, T.Y.Corbett, K.D.

(2016) EMBO J 35: 2139-2151

  • DOI: 10.15252/embj.201694082
  • Primary Citation of Related Structures:  
    4XH0, 4XHG, 4XHH, 4XHL, 5CYZ, 5CZO

  • PubMed Abstract: 
  • In budding yeast, the monopolin complex mediates sister kinetochore cross-linking and co-orientation in meiosis I. The CK1δ kinase Hrr25 is critical for sister kinetochore co-orientation, but its roles are not well understood. Here, we present the structures of Hrr25 and its complex with the monopolin subunit Mam1 ...

    In budding yeast, the monopolin complex mediates sister kinetochore cross-linking and co-orientation in meiosis I. The CK1δ kinase Hrr25 is critical for sister kinetochore co-orientation, but its roles are not well understood. Here, we present the structures of Hrr25 and its complex with the monopolin subunit Mam1. Hrr25 possesses a "central domain" that packs tightly against the kinase C-lobe, adjacent to the binding site for Mam1. Together, the Hrr25 central domain and Mam1 form a novel, contiguous embellishment to the Hrr25 kinase domain that affects Hrr25 conformational dynamics and enzyme kinetics. Mam1 binds a hydrophobic surface on the Hrr25 N-lobe that is conserved in CK1δ-family kinases, suggesting a role for this surface in recruitment and/or regulation of these enzymes throughout eukaryotes. Finally, using purified proteins, we find that Hrr25 phosphorylates the kinetochore receptor for monopolin, Dsn1. Together with our new structural insights into the fully assembled monopolin complex, this finding suggests that tightly localized Hrr25 activity modulates monopolin complex-kinetochore interactions through phosphorylation of both kinetochore and monopolin complex components.


    Organizational Affiliation

    Ludwig Institute for Cancer Research, San Diego Branch, San Diego, La Jolla, CA, USA Department of Cellular and Molecular Medicine, University of California, San Diego, La Jolla, CA, USA kcorbett@ucsd.edu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Casein kinase I homolog HRR25A394Saccharomyces cerevisiaeMutation(s): 1 
Gene Names: HRR25
EC: 2.7.11.1
UniProt
Find proteins for P29295 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P29295 
Go to UniProtKB:  P29295
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP29295
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CKI
Query on CKI

Download Ideal Coordinates CCD File 
B [auth A]N-(2-AMINOETHYL)-5-CHLOROISOQUINOLINE-8-SULFONAMIDE
C11 H12 Cl N3 O2 S
OGKYMFFYOWUTKV-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

Download Ideal Coordinates CCD File 
C [auth A],
D [auth A],
E [auth A],
F [auth A],
G [auth A],
C [auth A],
D [auth A],
E [auth A],
F [auth A],
G [auth A],
H [auth A],
I [auth A]
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.01 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.267 
  • R-Value Observed: 0.268 
  • Space Group: P 62 2 2
  • Diffraction Data DOI: 10.15785/SBGRID/154 SBGrid
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 137.497α = 90
b = 137.497β = 90
c = 94.639γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 



Entry History & Funding Information

Deposition Data

  • Deposited Date: 2015-01-05 
  • Released Date: 2016-01-06 
  • Deposition Author(s): Ye, Q., Corbett, K.D.

Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR01GM104141

Revision History  (Full details and data files)

  • Version 1.0: 2016-01-06
    Type: Initial release
  • Version 1.1: 2016-12-07
    Changes: Database references
  • Version 1.2: 2017-09-27
    Changes: Author supporting evidence, Database references
  • Version 1.3: 2019-12-25
    Changes: Author supporting evidence