Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Biological Assembly 2  

 3D View: Structure | Electron Density | Ligand Interaction

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 assigned by authors.

Macromolecule Content

• Total Structure Weight: 77.52 kDa 
• Atom Count: 5004 
• Residue Count: 597 
• Unique protein chains: 2

1FJM

Protein serine/threonine phosphatase-1 (alpha isoform, type 1) complexed with microcystin-LR toxin

• DOI: 10.2210/pdb1FJM/pdb

• Classification: HYDROLASE/HYDROLASE INHIBITOR
• Organism(s): Microcystis aeruginosa, Oryctolagus cuniculus
• Mutation(s): No 


• Deposited: 1995-12-17 Released: 1996-06-20 
• Deposition Author(s): Goldberg, J., Nairn, A.C., Kuriyan, J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Work: 0.178 
• R-Value Observed: 0.178 

Literature

Three-dimensional structure of the catalytic subunit of protein serine/threonine phosphatase-1.

Goldberg, J., Huang, H.B., Kwon, Y.G., Greengard, P., Nairn, A.C., Kuriyan, J.

(1995) Nature 376: 745-753

• PubMed: 7651533 
• DOI: 10.1038/376745a0
• Structures With Same Primary Citation


• PubMed Abstract: 
  

The crystal structure of mammalian protein phosphatase-1, complexed with the toxin microcystin and determined at 2.1 A resolution, reveals that it is a metalloenzyme unrelated in architecture to the tyrosine phosphatases. Two metal ions are positioned by a central beta-alpha-beta-alpha-beta scaffold at the active site, from which emanate three surface grooves that are potential binding sites for substrates and inhibitors. The carboxy terminus is positioned at the end of one of the grooves such that regulatory sequences following the domain might modulate function. The fold of the catalytic domain is expected to be closely preserved in protein phosphatases 2A and 2B (calcineurin).

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Organizational Affiliation: 

Howard Hughes Medical Institute, Rockefeller University, New York, New York 10021, USA.

Macromolecules

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details
microcystin LR	M, N	7	Microcystis aeruginosa	Mutation(s): 0

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
PROTEIN SERINE/THREONINE PHOSPHATASE-1 (ALPHA ISOFORM, TYPE 1)	A, B	330	Oryctolagus cuniculus	Mutation(s): 0  Gene Names: PPP1CA, PPP1A EC: 3.1.3.16
Find proteins for P62139 (Oryctolagus cuniculus) Go to UniProtKB:  P62139

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
BME	A, B	BETA-MERCAPTOETHANOL C2 H6 O S DGVVWUTYPXICAM-UHFFFAOYSA-N
MN	A, B	MANGANESE (II) ION Mn WAEMQWOKJMHJLA-UHFFFAOYSA-N

Biologically Interesting Molecules 1 Unique
ID	Chains	Name	Type/Class	2D Diagram	3D Interactions
PRD_000212 (0D5)	M, N	Microcystin LR	Oligopeptide /  Toxin		--

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Work: 0.178 
• R-Value Observed: 0.178 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 64.74	α = 90
b = 77.11	β = 90
c = 130.79	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1995-12-17 
• Released Date: 1996-06-20 
Deposition Author(s): Goldberg, J., Nairn, A.C., Kuriyan, J.

Revision History 

• Version 1.0: 1996-06-20
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Database references, Derived calculations, Non-polymer description, Version format compliance
• Version 1.3: 2012-12-12
  Changes: Other