8FMM

Complex structure of wild type Troponin complex

• PDB DOI: https://doi.org/10.2210/pdb8FMM/pdb

• Classification: STRUCTURAL PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2022-12-23 Released: 2024-01-31 
• Deposition Author(s): Wang, P., Ahmed, M., Sadek, H.
• Funding Organization(s): National Institutes of Health/National Heart, Lung, and Blood Institute (NIH/NHLBI)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.11 Å
• R-Value Free: 0.264 
• R-Value Work: 0.230 
• R-Value Observed: 0.231 

Starting Model: experimental

Literature

Structural and Phenotypic Correction of K210del Genetic Cardiomyopathy by an FDA Approved drug

Wang, P., Ahmed, M., Sadek, H.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - A1B1C1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly Evidence: gel filtration

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - A1B1C1 

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 94.6 kDa 
• Atom Count: 5,394 
• Modelled Residue Count: 664 
• Deposited Residue Count: 816 
• Unique protein chains: 3

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Troponin C, slow skeletal and cardiac muscles	A, D	164	Homo sapiens	Mutation(s): 0  Gene Names: TNNC1, TNNC
UniProt & NIH Common Fund Data Resources
Find proteins for P63316 (Homo sapiens) Explore P63316  Go to UniProtKB:  P63316
PHAROS:  P63316 GTEx:  ENSG00000114854

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Troponin T, cardiac muscle	B, E	109	Homo sapiens	Mutation(s): 0  Gene Names: TNNT2
UniProt & NIH Common Fund Data Resources
Find proteins for P45379 (Homo sapiens) Explore P45379  Go to UniProtKB:  P45379
PHAROS:  P45379 GTEx:  ENSG00000118194

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Troponin I, cardiac muscle	C, F	135	Homo sapiens	Mutation(s): 0  Gene Names: TNNI3, TNNC1
UniProt & NIH Common Fund Data Resources
Find proteins for P19429 (Homo sapiens) Explore P19429  Go to UniProtKB:  P19429
PHAROS:  P19429 GTEx:  ENSG00000129991

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CA (Subject of Investigation/LOI)	G [auth A], H [auth A], I [auth A], J [auth D], K [auth D], L [auth D]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.11 Å
• R-Value Free: 0.264 
• R-Value Work: 0.230 
• R-Value Observed: 0.231 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 42.071	α = 90
b = 168.219	β = 101.4
c = 69.683	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
PDB_EXTRACT	data extraction
HKL-3000	data reduction
HKL-3000	data scaling
MOLREP	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2024-01-31 
Deposition Author(s): Wang, P., Ahmed, M., Sadek, H.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Heart, Lung, and Blood Institute (NIH/NHLBI)	United States	--

Revision History  

• Version 1.0: 2024-01-31
  Type: Initial release