4GPB

COMPARISON OF THE BINDING OF GLUCOSE AND GLUCOSE-1-PHOSPHATE DERIVATIVES TO T-STATE GLYCOGEN PHOSPHORYLASE B


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Work: 0.180 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Comparison of the binding of glucose and glucose 1-phosphate derivatives to T-state glycogen phosphorylase b.

Martin, J.L.Johnson, L.N.Withers, S.G.

(1990) Biochemistry 29: 10745-10757

  • DOI: https://doi.org/10.1021/bi00500a005
  • Primary Citation of Related Structures:  
    2GPB, 3GPB, 4GPB, 5GPB

  • PubMed Abstract: 

    The binding of T-state- and R-state-stabilizing ligands to the catalytic C site of T-state glycogen phosphorylase b has been investigated by crystallographic methods to study the interactions made and the conformational changes that occur at the C site. The compounds studied were alpha-D-glucose, 1, a T-state-stabilizing inhibitor of the enzyme, and the R-state-stabilizing phosphorylated ligands alpha-D-glucose 1-phosphate (2), 2-deoxy-2-fluoro-alpha-D-glucose 1-phosphate (3), and alpha-D-glucose 1-methylenephosphonate (4). The complexes have been refined, giving crystallographic R factors of less than 19%, for data between 8 and 2.3 A. Analysis of the refined structures shows that the glucosyl portions of the phosphorylated ligands bind in the same orientation as glucose and retain most of the interactions formed between glucose and the enzyme. However, the phosphates of the phosphorylated ligands adopt different conformations in each case; the stability of these conformations have been studied by using computational methods to rationalize the different binding modes. Binding of the phosphorylated ligands is accompanied by movement of C-site residues, most notably a shift of a loop out of the C site and toward the exterior of the protein. The C-site alterations do not include movement of Arg569, which has been observed in both the refined complex with 1-deoxy-D-gluco-heptulose 2-phosphate (5) [Johnson, L. N., et al (1990) J. Mol. Biol. 211, 645-661] and in the R-state enzyme [Barford, D. & Johnson, L. N. (1989) Nature 340, 609-616]. Refinement of the ligand complexes has also led to the observation of additional electron density for residues 10-19 at the N-terminus which had not previously been localized in the native structure. The conformation of this stretch of residues is different from that observed in glycogen phosphorylase a.


  • Organizational Affiliation

    Laboratory of Molecular Biophysics, Oxford, U.K.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
GLYCOGEN PHOSPHORYLASE B842Oryctolagus 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 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
GFP
Query on GFP

Download Ideal Coordinates CCD File 
B [auth A],
C [auth A]
2-deoxy-2-fluoro-1-O-phosphono-alpha-D-glucopyranose
C6 H12 F O8 P
LXEHNDWFCMGWAY-QZABAPFNSA-N
PLP
Query on PLP

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Work: 0.180 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 128.5α = 90
b = 128.5β = 90
c = 116.3γ = 90
Software Package:
Software NamePurpose
X-PLORrefinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1992-10-15
    Type: Initial release
  • Version 1.1: 2008-03-25
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance
  • Version 1.3: 2017-11-29
    Changes: Derived calculations, Other
  • Version 1.4: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Database references, Derived calculations, Structure summary