6R2N

Crystal structure of KlGlk1 glucokinase from Kluyveromyces lactis

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.205 

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Literature

Crystal Structure of Kluyveromyces lactis Glucokinase ( Kl Glk1).

Zak, K.M., Kalinska, M., Wator, E., Kuska, K., Krutyholowa, R., Dubin, G., Popowicz, G.M., Grudnik, P.

(2019) Int J Mol Sci 20

  • DOI: 10.3390/ijms20194821
  • Primary Citation of Related Structures:  
    6R2N

  • PubMed Abstract: 

    • Glucose phosphorylating enzymes are crucial in the regulation of basic cellular processes, including metabolism and gene expression. Glucokinases and hexokinases provide a pool of phosphorylated glucose in an adenosine diphosphate (ADP)- and ATP-dependent manner to shape the cell metabolism ...

    Glucose phosphorylating enzymes are crucial in the regulation of basic cellular processes, including metabolism and gene expression. Glucokinases and hexokinases provide a pool of phosphorylated glucose in an adenosine diphosphate (ADP)- and ATP-dependent manner to shape the cell metabolism. The glucose processing enzymes from Kluyveromyces lactis are poorly characterized despite the emerging contribution of this yeast strain to industrial and laboratory scale biotechnology. The first reports on K. lactis glucokinase ( Kl Glk1) positioned the enzyme as an essential component required for glucose signaling. Nevertheless, no biochemical and structural information was available until now. Here, we present the first crystal structure of Kl Glk1 together with biochemical characterization, including substrate specificity and enzyme kinetics. Additionally, comparative analysis of the presented structure and the prior structures of lactis hexokinase ( Kl Hxk1) demonstrates the potential transitions between open and closed enzyme conformations upon ligand binding.

    Organizational Affiliation: 

    Malopolska Centre of Biotechnology, Jagiellonian University, ul. Gronostajowa 7a, 30-387 Krakow, Poland. przemyslaw.grudnik@uj.edu.pl.



Macromolecules
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(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Glucokinase-1A, B, C475Kluyveromyces lactisMutation(s): 0 
Gene Names: GLK1, KLLA0C01155g
EC: 2.7.1.2 (PDB Primary Data), 2.7.1.1 (UniProt)
Find proteins for Q6CUZ3 (Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37))
Explore Q6CUZ3 
Go to UniProtKB:  Q6CUZ3
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.205 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 102.011α = 90
b = 122.771β = 90
c = 360.346γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
PDB_EXTRACTdata extraction
XDSdata reduction
XDSdata scaling
PHASERphasing

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Polish National Science CentrePolandUMO-2015/19/D/NZ1/02009

Revision History  (Full details and data files)

  • Version 1.0: 2019-10-16
    Type: Initial release
  • Version 1.1: 2020-09-30
    Changes: Database references