1WRK

Crystal structure of the N-terminal domain of human cardiac troponin C in complex with trifluoperazine (orthrombic crystal form)

• PDB DOI: https://doi.org/10.2210/pdb1WRK/pdb

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


• Deposited: 2004-10-20 Released: 2006-01-24 
• Deposition Author(s): Takeda, S., Igarashi, T., Oishi, Y., Mori, H.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.15 Å
• R-Value Free: 0.251 
• R-Value Work: 0.230 
• R-Value Observed: 0.231 

Starting Model: experimental

Literature

Crystal structure of the N-terminal domain of human cardiac troponin C in complex with trifluoperazine

Takeda, S., Igarashi, T., Oishi, Y., Mori, H.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 21.61 kDa 
• Atom Count: 1,490 
• Modelled Residue Count: 163 
• Deposited Residue Count: 176 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Troponin C, slow skeletal and cardiac muscles	A, B	88	Homo sapiens	Mutation(s): 2
UniProt & NIH Common Fund Data Resources
Find proteins for P63316 (Homo sapiens) Explore P63316  Go to UniProtKB:  P63316
PHAROS:  P63316 GTEx:  ENSG00000114854

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
TFP	D [auth A], E [auth A], G [auth B], H [auth B]	10-[3-(4-METHYL-PIPERAZIN-1-YL)-PROPYL]-2-TRIFLUOROMETHYL-10H-PHENOTHIAZINE C21 H24 F3 N3 S ZEWQUBUPAILYHI-UHFFFAOYSA-N
CA	C [auth A], F [auth B]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.15 Å
• R-Value Free: 0.251 
• R-Value Work: 0.230 
• R-Value Observed: 0.231 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 40.33	α = 90
b = 47.9	β = 90
c = 98.64	γ = 90

Software Package:

Software Name	Purpose
HKL-2000	data collection
SCALEPACK	data scaling
MOLREP	phasing
CNS	refinement
HKL-2000	data reduction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2006-01-24 
Deposition Author(s): Takeda, S., Igarashi, T., Oishi, Y., Mori, H.

Revision History  

• Version 1.0: 2006-01-24
  Type: Initial release
  
• Version 1.1: 2008-04-30
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2021-11-10
  Changes: Database references, Derived calculations
• Version 1.4: 2023-10-25
  Changes: Data collection, Refinement description