5O50

Glycogen Phosphorylase b in complex with 33a


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.161 
  • R-Value Work: 0.130 
  • R-Value Observed: 0.132 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

Nanomolar Inhibitors of Glycogen Phosphorylase Based on beta-d-Glucosaminyl Heterocycles: A Combined Synthetic, Enzyme Kinetic, and Protein Crystallography Study.

Bokor, E.Kyriakis, E.Solovou, T.G.A.Koppany, C.Kantsadi, A.L.Szabo, K.E.Szakacs, A.Stravodimos, G.A.Docsa, T.Skamnaki, V.T.Zographos, S.E.Gergely, P.Leonidas, D.D.Somsak, L.

(2017) J Med Chem 60: 9251-9262

  • DOI: https://doi.org/10.1021/acs.jmedchem.7b01056
  • Primary Citation of Related Structures:  
    5O50, 5O52, 5O54, 5O56

  • PubMed Abstract: 

    Aryl substituted 1-(β-d-glucosaminyl)-1,2,3-triazoles as well as C-β-d-glucosaminyl 1,2,4-triazoles and imidazoles were synthesized and tested as inhibitors against muscle and liver isoforms of glycogen phosphorylase (GP). While the N-β-d-glucosaminyl 1,2,3-triazoles showed weak or no inhibition, the C-β-d-glucosaminyl derivatives had potent activity, and the best inhibitor was the 2-(β-d-glucosaminyl)-4(5)-(2-naphthyl)-imidazole with a K i value of 143 nM against human liver GPa. An X-ray crystallography study of the rabbit muscle GPb inhibitor complexes revealed structural features of the strong binding and offered an explanation for the differences in inhibitory potency between glucosyl and glucosaminyl derivatives and also for the differences between imidazole and 1,2,4-triazole analogues.


  • Organizational Affiliation

    Department of Organic Chemistry, University of Debrecen , POB 400, H-4002 Debrecen, Hungary.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Glycogen phosphorylase, muscle form842Oryctolagus cuniculusMutation(s): 0 
EC: 2.4.1.1
UniProt
Find proteins for P00489 (Oryctolagus cuniculus)
Explore P00489 
Go to UniProtKB:  P00489
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00489
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
IMP
Query on IMP

Download Ideal Coordinates CCD File 
D [auth A]INOSINIC ACID
C10 H13 N4 O8 P
GRSZFWQUAKGDAV-KQYNXXCUSA-N
9L2
Query on 9L2

Download Ideal Coordinates CCD File 
C [auth A](2~{R},3~{S},4~{R},5~{R},6~{R})-5-azanyl-2-(hydroxymethyl)-6-(4-phenyl-1~{H}-imidazol-2-yl)oxane-3,4-diol
C15 H19 N3 O4
XNWVPLWFFIGCKG-DHGKCCLASA-N
PLP
Query on PLP

Download Ideal Coordinates CCD File 
B [auth A]PYRIDOXAL-5'-PHOSPHATE
C8 H10 N O6 P
NGVDGCNFYWLIFO-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.161 
  • R-Value Work: 0.130 
  • R-Value Observed: 0.132 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 128.48α = 90
b = 128.48β = 90
c = 116.26γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling
REFMACphasing

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-09-27
    Type: Initial release
  • Version 1.1: 2017-11-29
    Changes: Database references