2J48

NMR structure of the pseudo-receiver domain of the CikA protein.


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: ENERGY 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

NMR structure of the pseudo-receiver domain of CikA.

Gao, T.Zhang, X.Ivleva, N.B.Golden, S.S.LiWang, A.

(2007) Protein Sci. 16: 465-475

  • DOI: 10.1110/ps.062532007

  • PubMed Abstract: 
  • The circadian input kinase (CikA) is a major element of the pathway that provides environmental information to the circadian clock of the cyanobacterium Synechococcus elongatus. CikA is a polypeptide of 754 residues and has three recognizable domains ...

    The circadian input kinase (CikA) is a major element of the pathway that provides environmental information to the circadian clock of the cyanobacterium Synechococcus elongatus. CikA is a polypeptide of 754 residues and has three recognizable domains: GAF, histidine protein kinase, and receiver-like. This latter domain of CikA lacks the conserved phospho-accepting aspartyl residue of bona fide receiver domains and is thus a pseudo-receiver (PsR). Recently, it was shown that the PsR domain (1) attenuates the autokinase activity of CikA, (2) is necessary to localize CikA to the cell pole, and (3) is necessary for the destabilization of CikA in the presence of the quinone analog 2,5-dibromo-3-methyl-6-isopropyl-p-benzoquinone (DBMIB). The solution structure of the PsR domain of CikA, CikAPsR, is presented here. A model of the interaction between the PsR domain and HPK portion of CikA provides a potential explanation for how the PsR domain attenuates the autokinase activity of CikA. Finally, a likely quinone-binding surface on CikAPsR is shown here.


    Organizational Affiliation

    Center for Research on Biological Clocks, Texas A&M University College Station, Texas 77843, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TWO-COMPONENT SENSOR KINASE
A
119Synechococcus elongatus (strain PCC 7942)Mutation(s): 0 
Gene Names: cikA
EC: 2.7.3.-
Find proteins for Q9KHI5 (Synechococcus elongatus (strain PCC 7942))
Go to UniProtKB:  Q9KHI5
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: ENERGY 
  • Olderado: 2J48 Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-03-06
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2018-03-28
    Type: Database references, Source and taxonomy