2O5G

Calmodulin-smooth muscle light chain kinase peptide complex

• PDB DOI: https://doi.org/10.2210/pdb2O5G/pdb

• Classification: METAL BINDING PROTEIN
• Organism(s): Gallus gallus
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2006-12-05 Released: 2007-12-25 
• Deposition Author(s): Valentine, K.G., Ng, H.L., Schneeweis, J.K., Kranz, J.K., Frederick, K.K., Alber, T., Wand, A.J.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.08 Å
• R-Value Free: 0.165 
• R-Value Work: 0.142 
• R-Value Observed: 0.144 

Literature

Ultrahigh resolution crystal structure of calmodulin-smooth muscle light kinase peptide complex

Valentine, K.G., Ng, H.L., Schneeweis, J.K., Kranz, J.K., Frederick, K.K., Alber, T., Wand, A.J.

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,PQS (software)

Macromolecule Content

• Total Structure Weight: 19.2 kDa 
• Atom Count: 1,617 
• Modelled Residue Count: 168 
• Deposited Residue Count: 169 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Calmodulin	A	148	Gallus gallus	Mutation(s): 0  Gene Names: CALM
UniProt
Find proteins for P62149 (Gallus gallus) Explore P62149  Go to UniProtKB:  P62149

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Smooth muscle Myosin light chain kinase peptide	B	21	N/A	Mutation(s): 0  EC: 2.7.11.18
UniProt
Find proteins for P11799 (Gallus gallus) Explore P11799  Go to UniProtKB:  P11799

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	G [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
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: 1.08 Å
• R-Value Free: 0.165 
• R-Value Work: 0.142 
• R-Value Observed: 0.144 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 28.861	α = 90
b = 56.894	β = 97.45
c = 44.76	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
Blu-Ice	data collection
MOSFLM	data reduction
SCALA	data scaling
EPMR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2007-12-25 
Deposition Author(s): Valentine, K.G., Ng, H.L., Schneeweis, J.K., Kranz, J.K., Frederick, K.K., Alber, T., Wand, A.J.

Revision History  

• Version 1.0: 2007-12-25
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Derived calculations, Version format compliance
• Version 1.2: 2017-10-18
  Changes: Refinement description
• Version 1.3: 2023-12-27
  Changes: Data collection, Database references, Derived calculations
• Version 1.4: 2024-10-30
  Changes: Structure summary