5X18

Crystal structure of Casein kinase I homolog 1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.208 
  • R-Value Work: 0.160 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Temperature-Sensitive Substrate and Product Binding Underlie Temperature-Compensated Phosphorylation in the Clock

Shinohara, Y.Koyama, Y.M.Ukai-Tadenuma, M.Hirokawa, T.Kikuchi, M.Yamada, R.G.Ukai, H.Fujishima, H.Umehara, T.Tainaka, K.Ueda, H.R.

(2017) Mol. Cell 67: 783-798.e20

  • DOI: 10.1016/j.molcel.2017.08.009
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Temperature compensation is a striking feature of the circadian clock. Here we investigate biochemical mechanisms underlying temperature-compensated, CKIδ-dependent multi-site phosphorylation in mammals. We identify two mechanisms for temperature-ins ...

    Temperature compensation is a striking feature of the circadian clock. Here we investigate biochemical mechanisms underlying temperature-compensated, CKIδ-dependent multi-site phosphorylation in mammals. We identify two mechanisms for temperature-insensitive phosphorylation at higher temperature: lower substrate affinity to CKIδ-ATP complex and higher product affinity to CKIδ-ADP complex. Inhibitor screening of ADP-dependent phosphatase activity of CKIδ identified aurintricarboxylic acid (ATA) as a temperature-sensitive kinase activator. Docking simulation of ATA and mutagenesis experiment revealed K224D/K224E mutations in CKIδ that impaired product binding and temperature-compensated primed phosphorylation. Importantly, K224D mutation shortens behavioral circadian rhythms and changes the temperature dependency of SCN's circadian period. Interestingly, temperature-compensated phosphorylation was evolutionary conserved in yeast. Molecular dynamics simulation and X-ray crystallography demonstrate that an evolutionally conserved CKI-specific domain around K224 can provide a structural basis for temperature-sensitive substrate and product binding. Surprisingly, this domain can confer temperature compensation on a temperature-sensitive TTBK1. These findings suggest the temperature-sensitive substrate- and product-binding mechanisms underlie temperature compensation.


    Organizational Affiliation

    Laboratory for Synthetic Biology, RIKEN Quantitative Biology Center, 1-3 Yamadaoka, Suita, Osaka 565-0871, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Casein kinase I homolog 1
A, B
295Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: YCK1 (CKI2)
EC: 2.7.11.1
Find proteins for P23291 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P23291
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download SDF File 
Download CCD File 
A, B
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
MLA
Query on MLA

Download SDF File 
Download CCD File 
A, B
MALONIC ACID
DICARBOXYLIC ACID C3; PROPANEDIOLIC ACID; METHANEDICARBOXYLIC ACID
C3 H4 O4
OFOBLEOULBTSOW-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.208 
  • R-Value Work: 0.160 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 45.503α = 90.00
b = 97.918β = 93.89
c = 84.737γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
MOLREPphasing
HKL-2000data processing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2017-10-04
    Type: Initial release