5JWQ

Crystal structure of KaiC S431E in complex with foldswitch-stabilized KaiB from Thermosynechococcus elongatus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.87 Å
  • R-Value Free: 0.345 
  • R-Value Work: 0.327 
  • R-Value Observed: 0.328 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Structural basis of the day-night transition in a bacterial circadian clock.

Tseng, R.Goularte, N.F.Chavan, A.Luu, J.Cohen, S.E.Chang, Y.G.Heisler, J.Li, S.Michael, A.K.Tripathi, S.Golden, S.S.LiWang, A.Partch, C.L.

(2017) Science 355: 1174-1180

  • DOI: 10.1126/science.aag2516
  • Primary Citation of Related Structures:  
    5JWO, 5JWQ, 5JWR, 5JYT, 5JYU, 5JYV

  • PubMed Abstract: 
  • Circadian clocks are ubiquitous timing systems that induce rhythms of biological activities in synchrony with night and day. In cyanobacteria, timing is generated by a posttranslational clock consisting of KaiA, KaiB, and KaiC proteins and a set of output signaling proteins, SasA and CikA, which transduce this rhythm to control gene expression ...

    Circadian clocks are ubiquitous timing systems that induce rhythms of biological activities in synchrony with night and day. In cyanobacteria, timing is generated by a posttranslational clock consisting of KaiA, KaiB, and KaiC proteins and a set of output signaling proteins, SasA and CikA, which transduce this rhythm to control gene expression. Here, we describe crystal and nuclear magnetic resonance structures of KaiB-KaiC,KaiA-KaiB-KaiC, and CikA-KaiB complexes. They reveal how the metamorphic properties of KaiB, a protein that adopts two distinct folds, and the post-adenosine triphosphate hydrolysis state of KaiC create a hub around which nighttime signaling events revolve, including inactivation of KaiA and reciprocal regulation of the mutually antagonistic signaling proteins, SasA and CikA.


    Organizational Affiliation

    Center for Circadian Biology, University of California, San Diego, La Jolla, CA 92093, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Circadian clock protein kinase KaiCA, C526Thermosynechococcus vestitus BP-1Mutation(s): 1 
Gene Names: kaiCtlr0483
EC: 2.7.11.1
UniProt
Find proteins for Q79V60 (Thermosynechococcus elongatus (strain BP-1))
Explore Q79V60 
Go to UniProtKB:  Q79V60
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Circadian clock protein KaiBB, D99Thermosynechococcus vestitus BP-1Mutation(s): 3 
Gene Names: kaiBtlr0482
UniProt
Find proteins for Q79V61 (Thermosynechococcus elongatus (strain BP-1))
Explore Q79V61 
Go to UniProtKB:  Q79V61
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ADP (Subject of Investigation/LOI)
Query on ADP

Download Ideal Coordinates CCD File 
E [auth A], F [auth C]ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.87 Å
  • R-Value Free: 0.345 
  • R-Value Work: 0.327 
  • R-Value Observed: 0.328 
  • Space Group: P 21 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 155.92α = 90
b = 155.92β = 90
c = 155.92γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
iMOSFLMdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment  



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesGM107521
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesGM107069

Revision History  (Full details and data files)

  • Version 1.0: 2017-03-29
    Type: Initial release
  • Version 1.1: 2017-09-20
    Changes: Author supporting evidence
  • Version 1.2: 2019-12-25
    Changes: Author supporting evidence