1FC0

HUMAN LIVER GLYCOGEN PHOSPHORYLASE COMPLEXED WITH N-ACETYL-BETA-D-GLUCOPYRANOSYLAMINE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.198 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Activation of human liver glycogen phosphorylase by alteration of the secondary structure and packing of the catalytic core.

Rath, V.L.Ammirati, M.LeMotte, P.K.Fennell, K.F.Mansour, M.N.Danley, D.E.Hynes, T.R.Schulte, G.K.Wasilko, D.J.Pandit, J.

(2000) Mol.Cell 6: 139-148

  • Primary Citation of Related Structures:  1FA9
  • Also Cited By: 2ATI

  • PubMed Abstract: 
  • Glycogen phosphorylases catalyze the breakdown of glycogen to glucose-1-phosphate, which enters glycolysis to fulfill the energetic requirements of the organism. Maintaining control of blood glucose levels is critical in minimizing the debilitating e ...

    Glycogen phosphorylases catalyze the breakdown of glycogen to glucose-1-phosphate, which enters glycolysis to fulfill the energetic requirements of the organism. Maintaining control of blood glucose levels is critical in minimizing the debilitating effects of diabetes, making liver glycogen phosphorylase a potential therapeutic target. To support inhibitor design, we determined the crystal structures of the active and inactive forms of human liver glycogen phosphorylase a. During activation, forty residues of the catalytic site undergo order/disorder transitions, changes in secondary structure, or packing to reorganize the catalytic site for substrate binding and catalysis. Knowing the inactive and active conformations of the liver enzyme and how each differs from its counterpart in muscle phosphorylase provides the basis for designing inhibitors that bind preferentially to the inactive conformation of the liver isozyme.


    Organizational Affiliation

    Exploratory Medicinal Sciences, Global Research and Development, Groton Laboratories, Pfizer, Inc, Connecticut 06340, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
GLYCOGEN PHOSPHORYLASE, LIVER FORM
A, B
846Homo sapiensGene Names: PYGL
EC: 2.4.1.1
Find proteins for P06737 (Homo sapiens)
Go to Gene View: PYGL
Go to UniProtKB:  P06737
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PLP
Query on PLP

Download SDF File 
Download CCD File 
A, B
PYRIDOXAL-5'-PHOSPHATE
VITAMIN B6 Phosphate
C8 H10 N O6 P
NGVDGCNFYWLIFO-UHFFFAOYSA-N
 Ligand Interaction
NBG
Query on NBG

Download SDF File 
Download CCD File 
A, B
1-N-ACETYL-BETA-D-GLUCOSAMINE
C8 H15 N O6
IBONACLSSOLHFU-JAJWTYFOSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.198 
  • Space Group: P 31
Unit Cell:
Length (Å)Angle (°)
a = 124.000α = 90.00
b = 124.000β = 90.00
c = 122.280γ = 120.00
Software Package:
Software NamePurpose
CNSrefinement
CNSphasing
SCALEPACKdata scaling
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-08-25
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Non-polymer description, Version format compliance