Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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

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

Biological Assembly 2  

 3D View: Structure | Electron Density | Ligand Interaction

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

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

Macromolecule Content

• Total Structure Weight: 72.55 kDa 
• Atom Count: 4380 
• Residue Count: 531 
• Unique protein chains: 1

4FG8

Crystal structure of human calcium/calmodulin-dependent protein kinase I 1-315 in complex with ATP

• DOI: 10.2210/pdb4FG8/pdb

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


• Deposited: 2012-06-04 Released: 2013-01-23 
• Deposition Author(s): Zha, M., Zhong, C., Ou, Y., Wang, J., Han, L., Ding, J.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.248 
• R-Value Work: 0.195 
• R-Value Observed: 0.198 

Literature

Crystal structures of human CaMKIalpha reveal insights into the regulation mechanism of CaMKI.

Zha, M., Zhong, C., Ou, Y., Han, L., Wang, J., Ding, J.

(2012) PLoS One 7: e44828-e44828

• PubMed: 23028635 
• DOI: 10.1371/journal.pone.0044828
• Primary Citation of Related Structures:  
  4FGB, 4FG7, 4FG8, 4FG9


• PubMed Abstract: 
  

Human calcium/calmodulin-dependent protein kinase I (CaMKI) plays pivotal roles in the nervous system. The activity of human CaMKI is regulated by a regulatory region including an autoinhibitory segment and a CaM-binding segment. We report here four structures of three CaMKIα truncates in apo form and in complexes with ATP. In an apo, autoinhibited structure, the activation segment adopts a unique helical conformation which together with the autoinhibitory segment constrains helices αC and αD in inactive conformations, sequesters Thr177 from being phosphorylated, and occludes the substrate-binding site. In an ATP-bound, inactive structure, the activation segment is largely disordered and the CaM-binding segment protrudes out ready for CaM binding. In an ATP-bound, active structure, the regulatory region is dissociated from the catalytic core and the catalytic site assumes an active conformation. Detailed structural analyses reveal the interplay of the regulatory region, the activation segment, and the nucleotide-binding site in the regulation of CaMKI.

---

Organizational Affiliation: 

State Key Laboratory of Molecular Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Calcium/calmodulin-dependent protein kinase type 1	A, B	315	Homo sapiens	Mutation(s): 0  Gene Names: CAMK1 EC: 2.7.11.17
Find proteins for Q14012 (Homo sapiens) Explore Q14012  Go to UniProtKB:  Q14012
NIH Common Fund Data Resources
PHAROS  Q14012 GTEx  ENSG00000134072

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ATP	A, B	ADENOSINE-5'-TRIPHOSPHATE C10 H16 N5 O13 P3 ZKHQWZAMYRWXGA-KQYNXXCUSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.248 
• R-Value Work: 0.195 
• R-Value Observed: 0.198 
• Space Group: P 6₃

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 83.415	α = 90
b = 83.415	β = 90
c = 153.372	γ = 120

Software Package:

Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
HKL-2000	data collection
HKL-2000	data reduction
HKL-2000	data scaling
CNS	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2012-06-04 
• Released Date: 2013-01-23 
Deposition Author(s): Zha, M., Zhong, C., Ou, Y., Wang, J., Han, L., Ding, J.

Revision History 

• Version 1.0: 2013-01-23
  Type: Initial release