7P32

Crystal structure of human lysosomal acid-alpha-glucosidase, GAA, in complex with cyclosulfamidate 6


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.82 Å
  • R-Value Free: 0.175 
  • R-Value Work: 0.150 
  • R-Value Observed: 0.151 

Starting Model: experimental
View more details

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 2.0 of the entry. See complete history


Literature

1,6- epi-Cyclophellitol Cyclosulfamidate Is a Bona Fide Lysosomal alpha-Glucosidase Stabilizer for the Treatment of Pompe Disease.

Kok, K.Kuo, C.L.Katzy, R.E.Lelieveld, L.T.Wu, L.Roig-Zamboni, V.van der Marel, G.A.Codee, J.D.C.Sulzenbacher, G.Davies, G.J.Overkleeft, H.S.Aerts, J.M.F.G.Artola, M.

(2022) J Am Chem Soc 144: 14819-14827

  • DOI: https://doi.org/10.1021/jacs.2c05666
  • Primary Citation of Related Structures:  
    7P2Z, 7P32, 7P4C, 7P4D

  • PubMed Abstract: 

    α-Glucosidase inhibitors are potential therapeutics for the treatment of diabetes, viral infections, and Pompe disease. Herein, we report a 1,6- epi -cyclophellitol cyclosulfamidate as a new class of reversible α-glucosidase inhibitors that displays enzyme inhibitory activity by virtue of its conformational mimicry of the substrate when bound in the Michaelis complex. The α-d- glc- configured cyclophellitol cyclosulfamidate 4 binds in a competitive manner the human lysosomal acid α-glucosidase (GAA), ER α-glucosidases, and, at higher concentrations, intestinal α-glucosidases, displaying an excellent selectivity over the human β-glucosidases GBA and GBA2 and glucosylceramide synthase (GCS). Cyclosulfamidate 4 stabilizes recombinant human GAA (rhGAA, alglucosidase alfa, Myozyme) in cell medium and plasma and facilitates enzyme trafficking to lysosomes. It stabilizes rhGAA more effectively than existing small-molecule chaperones and does so in vitro , in cellulo , and in vivo in zebrafish, thus representing a promising therapeutic alternative to Miglustat for Pompe disease.


  • Organizational Affiliation

    Department of Medical Biochemistry, Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, Leiden 2333 CC, The Netherlands.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Lysosomal alpha-glucosidaseA [auth AAA]872Homo sapiensMutation(s): 3 
Gene Names: GAA
EC: 3.2.1.20
UniProt & NIH Common Fund Data Resources
Find proteins for P10253 (Homo sapiens)
Explore P10253 
Go to UniProtKB:  P10253
PHAROS:  P10253
GTEx:  ENSG00000171298 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP10253
Glycosylation
Glycosylation Sites: 5Go to GlyGen: P10253-1
Sequence Annotations
Expand
  • Reference Sequence
Oligosaccharides

Help

Entity ID: 2
MoleculeChains Length2D Diagram Glycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranoseB [auth BBB]3N-Glycosylation
Glycosylation Resources
GlyTouCan:  G21290RB
GlyCosmos:  G21290RB
GlyGen:  G21290RB
Entity ID: 3
MoleculeChains Length2D Diagram Glycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranoseC [auth BcB]2N-Glycosylation
Glycosylation Resources
GlyTouCan:  G42666HT
GlyCosmos:  G42666HT
GlyGen:  G42666HT
Entity ID: 4
MoleculeChains Length2D Diagram Glycosylation3D Interactions
beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranoseD [auth BfB]3N-Glycosylation
Glycosylation Resources
GlyTouCan:  G15407YE
GlyCosmos:  G15407YE
GlyGen:  G15407YE
Entity ID: 5
MoleculeChains Length2D Diagram Glycosylation3D Interactions
alpha-L-fucopyranose-(1-6)-2-acetamido-2-deoxy-beta-D-glucopyranoseE [auth BiB]2N-Glycosylation
Glycosylation Resources
GlyTouCan:  G86851RC
GlyCosmos:  G86851RC
GlyGen:  G86851RC
Small Molecules
Ligands 7 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
56I (Subject of Investigation/LOI)
Query on 56I

Download Ideal Coordinates CCD File 
G [auth AAA][(1R,2R,3R,4R,5S)-2-(hydroxymethyl)-3,4,5-tris(oxidanyl)cyclohexyl]sulfamic acid
C7 H15 N O7 S
QOECHHYORUOADE-PJEQPVAWSA-N
NAG (Subject of Investigation/LOI)
Query on NAG

Download Ideal Coordinates CCD File 
F [auth AAA]2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
PGE (Subject of Investigation/LOI)
Query on PGE

Download Ideal Coordinates CCD File 
CA [auth AAA]TRIETHYLENE GLYCOL
C6 H14 O4
ZIBGPFATKBEMQZ-UHFFFAOYSA-N
SO4 (Subject of Investigation/LOI)
Query on SO4

Download Ideal Coordinates CCD File 
H [auth AAA],
I [auth AAA],
J [auth AAA],
K [auth AAA],
L [auth AAA]
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
GOL (Subject of Investigation/LOI)
Query on GOL

Download Ideal Coordinates CCD File 
V [auth AAA],
W [auth AAA],
X [auth AAA]
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
EDO (Subject of Investigation/LOI)
Query on EDO

Download Ideal Coordinates CCD File 
AA [auth AAA],
BA [auth AAA],
Y [auth AAA],
Z [auth AAA]
1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
CL (Subject of Investigation/LOI)
Query on CL

Download Ideal Coordinates CCD File 
M [auth AAA]
N [auth AAA]
O [auth AAA]
P [auth AAA]
Q [auth AAA]
M [auth AAA],
N [auth AAA],
O [auth AAA],
P [auth AAA],
Q [auth AAA],
R [auth AAA],
S [auth AAA],
T [auth AAA],
U [auth AAA]
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
CSO
Query on CSO
A [auth AAA]L-PEPTIDE LINKINGC3 H7 N O3 SCYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.82 Å
  • R-Value Free: 0.175 
  • R-Value Work: 0.150 
  • R-Value Observed: 0.151 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 97.043α = 90
b = 102.606β = 90
c = 129.118γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
Aimlessdata 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: 2022-07-13
    Type: Initial release
  • Version 1.1: 2022-08-31
    Changes: Database references
  • Version 1.2: 2024-01-31
    Changes: Data collection, Refinement description
  • Version 2.0: 2024-07-31
    Changes: Atomic model, Data collection, Source and taxonomy, Structure summary