6ALZ

Crystal structure of Protein Phosphatase 1 bound to the natural inhibitor Tautomycetin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.21 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.184 
  • R-Value Observed: 0.186 

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Ligand Structure Quality Assessment 


This is version 1.3 of the entry. See complete history


Literature

PP1:Tautomycetin Complex Reveals a Path toward the Development of PP1-Specific Inhibitors.

Choy, M.S.Swingle, M.D'Arcy, B.Abney, K.Rusin, S.F.Kettenbach, A.N.Page, R.Honkanen, R.E.Peti, W.

(2017) J Am Chem Soc 139: 17703-17706

  • DOI: 10.1021/jacs.7b09368
  • Primary Citation of Related Structures:  
    6ALZ

  • PubMed Abstract: 
  • Selective inhibitors for each serine/threonine phosphatase (PPP) are essential to investigate the biological actions of PPPs and to guide drug development. Biologically diverse organisms (e.g., cyanobacteria, dinoflagellates, beetles) produce structurally distinct toxins that are catalytic inhibitors of PPPs ...

    Selective inhibitors for each serine/threonine phosphatase (PPP) are essential to investigate the biological actions of PPPs and to guide drug development. Biologically diverse organisms (e.g., cyanobacteria, dinoflagellates, beetles) produce structurally distinct toxins that are catalytic inhibitors of PPPs. However, most toxins exhibit little selectivity, typically inhibiting multiple family members with similar potencies. Thus, the use of these toxins as chemical tools to study the relationship between individual PPPs and their biological substrates, and how disruptions in these relationships contributes to human disease, is severely limited. Here, we show that tautomycetin (TTN) is highly selective for a single PPP, protein phosphatase 1 (PP1/PPP1C). Our structure of the PP1:TTN complex reveals that PP1 selectivity is defined by a covalent bond between TTN and a PP1-specific cysteine residue, Cys127. Together, these data provide key molecular insights needed for the development of novel probes targeting single PPPs, especially PP1.


    Organizational Affiliation

    Department of Chemistry and Biochemistry, University of Arizona , Tucson, Arizona 85721, United States.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Serine/threonine-protein phosphatase PP1-alpha catalytic subunitA, B299Homo sapiensMutation(s): 0 
Gene Names: PPP1CAPPP1A
EC: 3.1.3.16
UniProt & NIH Common Fund Data Resources
Find proteins for P62136 (Homo sapiens)
Explore P62136 
Go to UniProtKB:  P62136
PHAROS:  P62136
GTEx:  ENSG00000172531 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP62136
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
BKM
Query on BKM

Download Ideal Coordinates CCD File 
E [auth A],
L [auth B]
(2Z)-2-[(1R)-3-{[(2R,3S,4R,7S,8S,11S,13R,16E)-17-ethyl-4,8-dihydroxy-3,7,11,13-tetramethyl-6,15-dioxononadeca-16,18-dien-2-yl]oxy}-1-hydroxy-3-oxopropyl]-3-methylbut-2-enedioic acid
C33 H52 O11
AQLTUWTUANKXRS-OXKGMMJMSA-N
 Ligand Interaction
DMS
Query on DMS

Download Ideal Coordinates CCD File 
F [auth A]DIMETHYL SULFOXIDE
C2 H6 O S
IAZDPXIOMUYVGZ-UHFFFAOYSA-N
 Ligand Interaction
MN
Query on MN

Download Ideal Coordinates CCD File 
C [auth A],
D [auth A],
J [auth B],
K [auth B]
MANGANESE (II) ION
Mn
WAEMQWOKJMHJLA-UHFFFAOYSA-N
 Ligand Interaction
CL
Query on CL

Download Ideal Coordinates CCD File 
G [auth A],
H [auth A],
I [auth A],
M [auth B]
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.21 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.184 
  • R-Value Observed: 0.186 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 66.199α = 90
b = 78.855β = 90
c = 133.779γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
Aimlessdata scaling
PHASERphasing
PDB_EXTRACTdata extraction
XDSdata reduction

Structure Validation

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Ligand Structure Quality Assessment 



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute on Drug Abuse (NIH/NIDA)United StatesGM098482
National Institutes of Health/National Institute on Drug Abuse (NIH/NIDA)United StatesNS091336
American Diabetes AssociationUnited States1-14-A-CN-31

Revision History  (Full details and data files)

  • Version 1.0: 2017-11-29
    Type: Initial release
  • Version 1.1: 2017-12-13
    Changes: Database references
  • Version 1.2: 2017-12-27
    Changes: Database references
  • Version 1.3: 2019-12-11
    Changes: Author supporting evidence