Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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

Biological assembly 1 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 45.07 kDa 
• Atom Count: 2996 
• Modelled Residue Count: 357 
• Deposited Residue Count: 386 
• Unique protein chains: 1

3FEH

Crystal structure of full length centaurin alpha-1

• DOI: 10.2210/pdb3FEH/pdb

• Classification: Hydrolase activator
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2008-11-29 Released: 2008-12-23 
• Deposition Author(s): Shen, L., Tong, Y., Tempel, W., MacKenzie, F., Arrowsmith, C.H., Edwards, A.M., Bountra, C., Weigelt, J., Bochkarev, A., Park, H., Structural Genomics Consortium (SGC)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.255 
• R-Value Work: 0.209 
• R-Value Observed: 0.211 

Literature

Phosphorylation-independent dual-site binding of the FHA domain of KIF13 mediates phosphoinositide transport via centaurin {alpha}1.

Tong, Y., Tempel, W., Wang, H., Yamada, K., Shen, L., Senisterra, G.A., Mackenzie, F., Chishti, A.H., Park, H.W.

(2010) Proc Natl Acad Sci U S A 107: 20346-20351

• PubMed: 21057110 
• DOI: 10.1073/pnas.1009008107
• Primary Citation of Related Structures:  
  3FEH, 3FM8, 3LJU


• PubMed Abstract: 
  

Phosphatidylinositol 3,4,5-triphosphate (PIP3) plays a key role in neuronal polarization and axon formation. PIP3-containing vesicles are transported to axon tips by the kinesin KIF13B via an adaptor protein, centaurin α1 (CENTA1). KIF13B interacts with CENTA1 through its forkhead-associated (FHA) domain. We solved the crystal structures of CENTA1 in ligand-free, KIF13B-FHA domain-bound, and PIP3 head group (IP4)-bound conformations, and the CENTA1/KIF13B-FHA/IP4 ternary complex. The first pleckstrin homology (PH) domain of CENTA1 specifically binds to PIP3, while the second binds to both PIP3 and phosphatidylinositol 3,4-biphosphate (PI(3,4)P(2)). The FHA domain of KIF13B interacts with the PH1 domain of one CENTA1 molecule and the ArfGAP domain of a second CENTA1 molecule in a threonine phosphorylation-independent fashion. We propose that full-length KIF13B and CENTA1 form heterotetramers that can bind four phosphoinositide molecules in the vesicle and transport it along the microtubule.

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Organizational Affiliation: 

Structural Genomics Consortium, University of Toronto, Toronto, ON M5G 1L7, Canada.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Centaurin-alpha-1	A	386	Homo sapiens	Mutation(s): 1  Gene Names: CENTA1, ADAP1
Find proteins for O75689 (Homo sapiens) Explore O75689  Go to UniProtKB:  O75689
NIH Common Fund Data Resources
GTEx:  ENSG00000105963

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ZN	A	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N
UNX	A	UNKNOWN ATOM OR ION X

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.255 
• R-Value Work: 0.209 
• R-Value Observed: 0.211 
• Space Group: C 1 2 1
• Diffraction Data DOI: 10.18430/m33feh Protein Diffraction

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 118.055	α = 90
b = 52.38	β = 106.45
c = 65.023	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
SOLVE	phasing
RESOLVE	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2008-11-29 
• Released Date: 2008-12-23 
Deposition Author(s): Shen, L., Tong, Y., Tempel, W., MacKenzie, F., Arrowsmith, C.H., Edwards, A.M., Bountra, C., Weigelt, J., Bochkarev, A., Park, H., Structural Genomics Consortium (SGC)

Revision History  

• Version 1.0: 2008-12-23
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2017-11-01
  Changes: Refinement description