9IKB | pdb_00009ikb

Crystal structure of heterotrimeric Kinesin-2

• PDB DOI: https://doi.org/10.2210/pdb9IKB/pdb

• Classification: TRANSPORT PROTEIN
• Organism(s): Caenorhabditis elegans
• Expression System: Escherichia coli 'BL21-Gold(DE3)pLysS AG, Escherichia coli
• Mutation(s): No 


• Deposited: 2024-06-27 Released: 2025-07-02 
• Deposition Author(s): Ren, J., Zhao, L., Feng, W.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.54 Å
• R-Value Free: 
  0.271 (Depositor), 0.266 (DCC) 
• R-Value Work: 
  0.230 (Depositor), 0.229 (DCC) 
• R-Value Observed: 
  0.232 (Depositor) 

Starting Model: experimental

Literature

Crystal structure of heterotrimeric Kinesin-2

Ren, J., Zhao, L., Feng, W.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - A1B1C1 

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

Biological Assembly Evidence: light scattering

Macromolecule Content 

• Total Structure Weight: 108.93 kDa 
• Atom Count: 6,108 
• Modeled Residue Count: 781 
• Deposited Residue Count: 963 
• Unique protein chains: 3

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Kinesin-like protein	A [auth B]	254	Caenorhabditis elegans	Mutation(s): 0  Gene Names: klp-11, CELE_F20C5.2, F20C5.2
UniProt
Find proteins for Q19633 (Caenorhabditis elegans) Explore Q19633  Go to UniProtKB:  Q19633

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Kinesin-like protein klp-20	B [auth C]	120	Caenorhabditis elegans	Mutation(s): 0  Gene Names: klp-20, Y50D7A.6
UniProt
Find proteins for Q965T6 (Caenorhabditis elegans) Explore Q965T6  Go to UniProtKB:  Q965T6

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Kinesin-associated protein	C [auth G]	589	Caenorhabditis elegans	Mutation(s): 0  Gene Names: kap-1, CELE_F08F8.3, F08F8.3
UniProt
Find proteins for G5EEE6 (Caenorhabditis elegans) Explore G5EEE6  Go to UniProtKB:  G5EEE6

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.54 Å
• R-Value Free:  0.271 (Depositor), 0.266 (DCC) 
• R-Value Work:  0.230 (Depositor), 0.229 (DCC) 
• R-Value Observed: 0.232 (Depositor) 

Space Group: P 4₃ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 107.445	α = 90
b = 107.445	β = 90
c = 255.397	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
HKL-2000	data scaling
HKL-2000	data reduction
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-07-02 
Deposition Author(s): Ren, J., Zhao, L., Feng, W.

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Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	31971160,5242021

Revision History  

• Version 1.0: 2025-07-02
  Type: Initial release