7SWG

cTnC-TnI chimera complexed with A1


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 10 
  • Selection Criteria: target function 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Structural and Thermodynamic Model for the Activation of Cardiac Troponin.

Poppe, L.Hartman, J.J.Romero, A.Reagan, J.D.

(2022) Biochemistry 61: 741-748

  • DOI: https://doi.org/10.1021/acs.biochem.2c00084
  • Primary Citation of Related Structures:  
    7SUP, 7SVC, 7SWG, 7SWI, 7SXC, 7SXD

  • PubMed Abstract: 

    Cardiac troponin is a regulatory protein complex located on the sarcomere that regulates the engagement of myosin on actin filaments. Low-molecular weight modulators of troponin that bind allosterically with the calcium ion have the potential to improve cardiac contractility in patients with reduced cardiac function. Here we propose an approach to the rational design of troponin modulators through the combined use of solution nuclear magnetic resonance and isothermal titration calorimetry methods. In contrast to traditional approaches limited to calcium and activator-bound troponin structures, here we analyzed the structural and thermodynamic impact of an activator in the context of the troponin functional cycle. This led us to propose a rationale for developing an efficacious troponin activator.


  • Organizational Affiliation

    Amgen, Inc., Thousand Oaks, California 91320, United States.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Troponin C, slow skeletal and cardiac muscles,Troponin I, cardiac muscle chimera129Homo sapiensMutation(s): 0 
Gene Names: TNNC1TNNCTNNI3
UniProt & NIH Common Fund Data Resources
Find proteins for P19429 (Homo sapiens)
Explore P19429 
Go to UniProtKB:  P19429
PHAROS:  P19429
GTEx:  ENSG00000129991 
Find proteins for P63316 (Homo sapiens)
Explore P63316 
Go to UniProtKB:  P63316
PHAROS:  P63316
GTEx:  ENSG00000114854 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupsP19429P63316
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
BQ6
Query on BQ6

Download Ideal Coordinates CCD File 
B [auth A]4-(3-cyano-3-methylazetidine-1-carbonyl)-N-[(3S)-7-fluoro-6-methyl-3,4-dihydro-2H-1-benzopyran-3-yl]-5-methyl-1H-pyrrole-2-sulfonamide
C21 H23 F N4 O4 S
PKIDWDVQYYRRMY-HNNXBMFYSA-N
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 10 
  • Selection Criteria: target function 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Other privateUnited States--

Revision History  (Full details and data files)

  • Version 1.0: 2022-04-06
    Type: Initial release
  • Version 1.1: 2022-04-13
    Changes: Database references
  • Version 1.2: 2022-04-27
    Changes: Database references
  • Version 1.3: 2023-06-14
    Changes: Other
  • Version 1.4: 2024-05-15
    Changes: Data collection, Database references