2QLV

Crystal structure of the heterotrimer core of the S. cerevisiae AMPK homolog SNF1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.299 
  • R-Value Work: 0.239 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of the heterotrimer core of Saccharomyces cerevisiae AMPK homologue SNF1.

Amodeo, G.A.Rudolph, M.J.Tong, L.

(2007) Nature 449: 492-495

  • DOI: 10.1038/nature06127

  • PubMed Abstract: 
  • AMP-activated protein kinase (AMPK) is a central regulator of energy homeostasis in mammals and is an attractive target for drug discovery against diabetes, obesity and other diseases. The AMPK homologue in Saccharomyces cerevisiae, known as SNF1, is ...

    AMP-activated protein kinase (AMPK) is a central regulator of energy homeostasis in mammals and is an attractive target for drug discovery against diabetes, obesity and other diseases. The AMPK homologue in Saccharomyces cerevisiae, known as SNF1, is essential for responses to glucose starvation as well as for other cellular processes, although SNF1 seems to be activated by a ligand other than AMP. Here we report the crystal structure at 2.6 A resolution of the heterotrimer core of SNF1. The ligand-binding site in the gamma-subunit (Snf4) has clear structural differences from that of the Schizosaccharomyces pombe enzyme, although our crystallographic data indicate that AMP can also bind to Snf4. The glycogen-binding domain in the beta-subunit (Sip2) interacts with Snf4 in the heterotrimer but should still be able to bind carbohydrates. Our structure is supported by a large body of biochemical and genetic data on this complex. Most significantly, the structure reveals that part of the regulatory sequence in the alpha-subunit (Snf1) is sequestered by Snf4, demonstrating a direct interaction between the alpha- and gamma-subunits and indicating that our structure may represent the heterotrimer core of SNF1 in its activated state.


    Organizational Affiliation

    Department of Biological Sciences, Columbia University, New York, New York 10027, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Carbon catabolite derepressing protein kinase
A, D
171Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: SNF1 (CAT1, CCR1, GLC2, PAS14)
EC: 2.7.11.1
Find proteins for P06782 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P06782
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Protein SIP2
B, E
252Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: SIP2 (SPM2)
Find proteins for P34164 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P34164
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Nuclear protein SNF4
C, F
315Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: SNF4 (CAT3, SCI1)
Find proteins for P12904 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P12904
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.299 
  • R-Value Work: 0.239 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 112.330α = 90.00
b = 81.840β = 102.22
c = 174.740γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
SCALEPACKdata scaling
CNSrefinement
DENZOdata reduction
PDB_EXTRACTdata extraction
CBASSdata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-09-25
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2017-10-18
    Type: Refinement description