2N7L

NMR structure of the N-domain of troponin C bound to the switch region of troponin I and the covalent levosimendan analog i9

• PDB DOI: https://doi.org/10.2210/pdb2N7L/pdb
• BMRB: 25810

• Classification: CONTRACTILE PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2015-09-14 Released: 2016-07-27 
• Deposition Author(s): Pineda Sanabria, S.E., Sykes, B.D., Robertson, I.M.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Literature

Troponin C with covalently bound levosimendan analog i9 enhances contraction in cardiac muscle fibers

Pineda Sanabria, S.E., Robertson, I.M., Sun, Y., Irving, M., Sykes, B.D.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 16.26 kDa 
• Atom Count: 1,124 
• Modelled Residue Count: 140 
• Deposited Residue Count: 141 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Troponin C/Troponin I chimera	A [auth C]	141	Homo sapiens	Mutation(s): 1  Gene Names: TNNC, TNNC1, TNNI3
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
UniProt Groups	P19429P63316

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CA	B [auth C]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
4J4	A [auth C]	L-PEPTIDE LINKING	C18 H18 F2 N2 O3 S		CYS

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2016-07-27 
Deposition Author(s): Pineda Sanabria, S.E., Sykes, B.D., Robertson, I.M.

Revision History  

• Version 1.0: 2016-07-27
  Type: Initial release
  
• Version 1.1: 2023-06-14
  Changes: Data collection, Database references, Derived calculations, Other