Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | Ligand Interaction

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

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

Macromolecule Content

• Total Structure Weight: 40.01 kDa 
• Atom Count: 2858 
• Modelled Residue Count: 318 
• Deposited Residue Count: 348 
• Unique protein chains: 1

5DJO

Crystal structure of the CC1-FHA tandem of Kinesin-3 KIF13A

• PDB DOI: 10.2210/pdb5DJO/pdb

• Classification: TRANSPORT PROTEIN
• Organism(s): Mus musculus
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2015-09-02 Released: 2015-12-30 
• Deposition Author(s): Ren, J.Q., Li, W., Huo, L., Feng, W.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.74 Å
• R-Value Free: 0.221 
• R-Value Work: 0.163 
• R-Value Observed: 0.166 

Literature

Structural Correlation of the Neck Coil with the Coiled-coil (CC1)-Forkhead-associated (FHA) Tandem for Active Kinesin-3 KIF13A

Ren, J., Huo, L., Wang, W., Zhang, Y., Li, W., Lou, J., Xu, T., Feng, W.

(2016) J Biol Chem 291: 3581-3594

• PubMed: 26680000 
• DOI: 10.1074/jbc.M115.689091
• Primary Citation of Related Structures:  
  5DJN, 5DJO


• PubMed Abstract: 
  

Processive kinesin motors often contain a coiled-coil neck that controls the directionality and processivity. However, the neck coil (NC) of kinesin-3 is too short to form a stable coiled-coil dimer. Here, we found that the coiled-coil (CC1)-forkhead-associated (FHA) tandem (that is connected to NC by Pro-390) of kinesin-3 KIF13A assembles as an extended dimer. With the removal of Pro-390, the NC-CC1 tandem of KIF13A unexpectedly forms a continuous coiled-coil dimer that can be well aligned into the CC1-FHA dimer. The reverse introduction of Pro-390 breaks the NC-CC1 coiled-coil dimer but provides the intrinsic flexibility to couple NC with the CC1-FHA tandem. Mutations of either NC, CC1, or the FHA domain all significantly impaired the motor activity. Thus, the three elements within the NC-CC1-FHA tandem of KIF13A are structurally interrelated to form a stable dimer for activating the motor. This work also provides the first direct structural evidence to support the formation of a coiled-coil neck by the short characteristic neck domain of kinesin-3.

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Organizational Affiliation: 

From the National Laboratory of Biomacromolecules and [e-mail].

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Kinesin-like protein	A, B	174	Mus musculus	Mutation(s): 0  Gene Names: Kif13a
UniProt & NIH Common Fund Data Resources
Find proteins for Q9EQW7 (Mus musculus) Explore Q9EQW7  Go to UniProtKB:  Q9EQW7
IMPC:  MGI:1098264

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
PEG	I [auth B]	DI(HYDROXYETHYL)ETHER C4 H10 O3 MTHSVFCYNBDYFN-UHFFFAOYSA-N
ACY	G [auth B]	ACETIC ACID C2 H4 O2 QTBSBXVTEAMEQO-UHFFFAOYSA-N
FMT	C [auth A], D [auth A], E [auth A], F [auth B], H [auth B]	FORMIC ACID C H2 O2 BDAGIHXWWSANSR-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.74 Å
• R-Value Free: 0.221 
• R-Value Work: 0.163 
• R-Value Observed: 0.166 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 99.154	α = 90
b = 50.014	β = 91.97
c = 66.941	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
xia2	data reduction
xia2	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2015-09-02 
• Released Date: 2015-12-30 
Deposition Author(s): Ren, J.Q., Li, W., Huo, L., Feng, W.

Revision History  

• Version 1.0: 2015-12-30
  Type: Initial release
  
• Version 1.1: 2016-02-24
  Changes: Database references