1IT6

CRYSTAL STRUCTURE OF THE COMPLEX BETWEEN CALYCULIN A AND THE CATALYTIC SUBUNIT OF PROTEIN PHOSPHATASE 1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.182 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of the complex between calyculin A and the catalytic subunit of protein phosphatase 1.

Kita, A.Matsunaga, S.Takai, A.Kataiwa, H.Wakimoto, T.Fusetani, N.Isobe, M.Miki, K.

(2002) Structure 10: 715-724


  • PubMed Abstract: 
  • The crystal structure of the catalytic subunit of the protein phosphatase 1 (PP1), PP1 gamma, in complex with a marine toxin, calyculin A, was determined at 2.0 A resolution. The metal binding site contains the phosphate group of calyculin A and form ...

    The crystal structure of the catalytic subunit of the protein phosphatase 1 (PP1), PP1 gamma, in complex with a marine toxin, calyculin A, was determined at 2.0 A resolution. The metal binding site contains the phosphate group of calyculin A and forms a tight network via the hydrophilic interactions between PP1 and calyculin A. Calyculin A is located in two of the three grooves, namely, in the hydrophobic groove and the acidic groove on the molecular surface. This is the first observation to note that the inhibitor adopts not a pseudocyclic conformation but an extended conformation in order to form a complex with the protein. The amino acid terminus of calyculin A contributes, in a limited manner, to the binding to PP1 gamma, which is consistent with findings from the studies of dose-inhibition analysis.


    Organizational Affiliation

    Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
SERINE/THREONINE PROTEIN PHOSPHATASE 1 GAMMA (PP1-GAMMA) CATALYTIC SUBUNIT
A, B
323Homo sapiensGene Names: PPP1CC
EC: 3.1.3.16
Find proteins for P36873 (Homo sapiens)
Go to Gene View: PPP1CC
Go to UniProtKB:  P36873
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MN
Query on MN

Download SDF File 
Download CCD File 
A, B
MANGANESE (II) ION
Mn
WAEMQWOKJMHJLA-UHFFFAOYSA-N
 Ligand Interaction
CYU
Query on CYU

Download SDF File 
Download CCD File 
A, B
CALYCULIN A
C50 H81 N4 O15 P
FKAWLXNLHHIHLA-VQHJTIBFSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
CYUKi: 4.1 nM BINDINGMOAD
CYUKi: 4.1 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.182 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 98.090α = 90.00
b = 136.360β = 90.00
c = 61.580γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
CCP4data scaling
AMoREphasing
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-05-22
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance