3BYA

Structure of a Calmodulin Complex

• PDB DOI: https://doi.org/10.2210/pdb3BYA/pdb

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


• Deposited: 2008-01-15 Released: 2009-01-20 
• Deposition Author(s): Birrane, G., Soni, A., Ladias, J.A.A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.85 Å
• R-Value Free: 0.232 
• R-Value Work: 0.181 
• R-Value Observed: 0.184 

Starting Model: experimental

Literature

Structure of a Calmodulin Complex

Birrane, G., Soni, A., Ladias, J.A.A.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

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

Macromolecule Content

• Total Structure Weight: 19.65 kDa 
• Atom Count: 1,352 
• Modelled Residue Count: 157 
• Deposited Residue Count: 172 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Calmodulin	A	148	Homo sapiens	Mutation(s): 0  Gene Names: CALM1, CALM, CAM, CAM1
UniProt & NIH Common Fund Data Resources
Find proteins for P0DP23 (Homo sapiens) Explore P0DP23  Go to UniProtKB:  P0DP23
PHAROS:  P0DP23 GTEx:  ENSG00000198668

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Glutamate [NMDA] receptor subunit zeta-1 peptide	B	24	N/A	Mutation(s): 0
UniProt & NIH Common Fund Data Resources
Find proteins for Q05586 (Homo sapiens) Explore Q05586  Go to UniProtKB:  Q05586
PHAROS:  Q05586 GTEx:  ENSG00000176884

Small Molecules

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

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.85 Å
• R-Value Free: 0.232 
• R-Value Work: 0.181 
• R-Value Observed: 0.184 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 67.768	α = 90
b = 42.737	β = 106.92
c = 62.012	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
CBASS	data collection
HKL-2000	data reduction
HKL-2000	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2009-01-20 
Deposition Author(s): Birrane, G., Soni, A., Ladias, J.A.A.

Revision History  

• Version 1.0: 2009-01-20
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Advisory, Version format compliance
• Version 1.2: 2023-08-30
  Changes: Data collection, Database references, Derived calculations, Refinement description