2PK9

Structure of the Pho85-Pho80 CDK-cyclin Complex of the Phosphate-responsive Signal Transduction Pathway

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.91 Å
  • R-Value Free: 0.315 
  • R-Value Work: 0.281 
  • R-Value Observed: 0.283 

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This is version 1.2 of the entry. See complete history. 


Literature

Structure of the Pho85-Pho80 CDK-Cyclin Complex of the Phosphate-Responsive Signal Transduction Pathway

Huang, K., Ferrin-O'Connell, I., Zhang, W., Leonard, G.A., O'Shea, E.K., Quiocho, F.A.

(2007) Mol Cell 28: 614-623

  • DOI: 10.1016/j.molcel.2007.09.013
  • Primary Citation of Related Structures:  
    2PK9, 2PMI

  • PubMed Abstract: 

    • The ability to sense and respond appropriately to environmental changes is a primary requirement of all living organisms. In response to phosphate limitation, Saccharomyces cerevisiae induces transcription of a set of genes involved in the regulation of phosphate acquisition from the ambient environment ...

    The ability to sense and respond appropriately to environmental changes is a primary requirement of all living organisms. In response to phosphate limitation, Saccharomyces cerevisiae induces transcription of a set of genes involved in the regulation of phosphate acquisition from the ambient environment. A signal transduction pathway (the PHO pathway) mediates this response, with Pho85-Pho80 playing a vital role. Here we report the X-ray structure of Pho85-Pho80, a prototypic structure of a CDK-cyclin complex functioning in transcriptional regulation in response to environmental changes. The structure revealed a specific salt link between a Pho85 arginine and a Pho80 aspartate that makes phosphorylation of the Pho85 activation loop dispensable and that maintains a Pho80 loop conformation for possible substrate recognition. It further showed two sites on the Pho80 cyclin for high-affinity binding of the transcription factor substrate (Pho4) and the CDK inhibitor (Pho81) that are markedly distant to each other and the active site.

    Organizational Affiliation: 

    Verna and Marrs McLean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, TX 77030, USA.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Cyclin-dependent protein kinase PHO85A, C317Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: PHO85, SSG3
EC: 2.7.11.22
Find proteins for P17157 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P17157 
Go to UniProtKB:  P17157
Protein Feature View
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  • Reference Sequence
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
PHO85 cyclin PHO80B, D293Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: PHO80, AGS3, TUP7, VAC5
Find proteins for P20052 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P20052 
Go to UniProtKB:  P20052
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MES
Query on MES
Download Ideal Coordinates CCD File 
 E [auth B], F [auth D]2-(N-MORPHOLINO)-ETHANESULFONIC ACID
C6 H13 N O4 S
SXGZJKUKBWWHRA-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.91 Å
  • R-Value Free: 0.315 
  • R-Value Work: 0.281 
  • R-Value Observed: 0.283 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 147.775α = 90
b = 147.775β = 90
c = 211.825γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
SOLVEphasing
CNSrefinement
HKL-2000data reduction
HKL-2000data scaling
HKL-2000data collection

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-12-11
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2019-07-24
    Changes: Advisory, Data collection, Refinement description