3KAR

THE MOTOR DOMAIN OF KINESIN-LIKE PROTEIN KAR3, A SACCHAROMYCES CEREVISIAE KINESIN-RELATED PROTEIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Work: 0.175 

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This is version 1.3 of the entry. See complete history


Literature

X-ray crystal structure of the yeast Kar3 motor domain complexed with Mg.ADP to 2.3 A resolution.

Gulick, A.M.Song, H.Endow, S.A.Rayment, I.

(1998) Biochemistry 37: 1769-1776

  • DOI: https://doi.org/10.1021/bi972504o
  • Primary Citation of Related Structures:  
    3KAR

  • PubMed Abstract: 

    The kinesin family of motor proteins, which contain a conserved motor domain of approximately 350 amino acids, generate movement against microtubules. Over 90 members of this family have been identified, including motors that move toward the minus or plus end of microtubules. The Kar3 protein from Saccharomyces cerevisiae is a minus end-directed kinesin family member that is involved in both nuclear fusion, or karyogamy, and mitosis. The Kar3 protein is 729 residues in length with the motor domain located in the C-terminal 347 residues. Recently, the three-dimensional structures of two kinesin family members have been reported. These structures include the motor domains of the plus end-directed kinesin heavy chain [Kull, F. J., et al. (1996) Nature 380, 550-555] and the minus end-directed Ncd [Sablin, E. P., et al. (1996) Nature 380, 555-559]. We now report the structure of the Kar3 protein complexed with Mg.ADP obtained from crystallographic data to 2.3 A. The structure is similar to those of the earlier kinesin family members, but shows differences as well, most notably in the length of helix alpha 4, a helix which is believed to be involved in conformational changes during the hydrolysis cycle.


  • Organizational Affiliation

    Department of Biochemistry, University of Wisconsin, Madison 53705, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
KINESIN-LIKE PROTEIN KAR3346Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: KAR3
EC: 5.6.1.4
UniProt
Find proteins for P17119 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P17119 
Go to UniProtKB:  P17119
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP17119
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Work: 0.175 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 44.129α = 90
b = 81.209β = 105.78
c = 48.298γ = 90
Software Package:
Software NamePurpose
HEAVYmodel building
TNTrefinement
XDSdata reduction
XSCALIBREdata scaling
HEAVYphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1998-04-29
    Type: Initial release
  • Version 1.1: 2008-03-25
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2024-02-21
    Changes: Data collection, Database references, Derived calculations, Other