2MSK

Solution Structure and Chemical Shift Assignments for BeF3 activated Receiver Domain of Nitrogen Regulatory Protein C (NtrC) at 35C


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 300 
  • Conformers Submitted: 25 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Free energy landscape of activation in a signalling protein at atomic resolution.

Pontiggia, F.Pachov, D.V.Clarkson, M.W.Villali, J.Hagan, M.F.Pande, V.S.Kern, D.

(2015) Nat Commun 6: 7284-7284

  • DOI: 10.1038/ncomms8284
  • Primary Citation of Related Structures:  2MSL

  • PubMed Abstract: 
  • The interconversion between inactive and active protein states, traditionally described by two static structures, is at the heart of signalling. However, how folded states interconvert is largely unknown due to the inability to experimentally observe ...

    The interconversion between inactive and active protein states, traditionally described by two static structures, is at the heart of signalling. However, how folded states interconvert is largely unknown due to the inability to experimentally observe transition pathways. Here we explore the free energy landscape of the bacterial response regulator NtrC by combining computation and nuclear magnetic resonance, and discover unexpected features underlying efficient signalling. We find that functional states are defined purely in kinetic and not structural terms. The need of a well-defined conformer, crucial to the active state, is absent in the inactive state, which comprises a heterogeneous collection of conformers. The transition between active and inactive states occurs through multiple pathways, facilitated by a number of nonnative transient hydrogen bonds, thus lowering the transition barrier through both entropic and enthalpic contributions. These findings may represent general features for functional conformational transitions within the folded state.


    Organizational Affiliation

    Howard Hughes Medical Institute and Department of Biochemistry, Brandeis University, Waltham, Massachusetts 02452, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Nitrogen regulation protein NR(I)
A
124Salmonella typhimurium (strain ATCC 68169 / UK-1)N/A
Find proteins for A0A0M3KKS6 (Salmonella typhimurium (strain ATCC 68169 / UK-1))
Go to UniProtKB:  A0A0M3KKS6
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 300 
  • Conformers Submitted: 25 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-07-01
    Type: Initial release