5I23

Crystal Structure of Agd31B, alpha-transglucosylase in Glycoside Hydrolase Family 31, in complex with Cyclophellitol Aziridine probe CF022


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.187 
  • R-Value Work: 0.163 
  • R-Value Observed: 0.164 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Detection of Active Mammalian GH31 alpha-Glucosidases in Health and Disease Using In-Class, Broad-Spectrum Activity-Based Probes.

Jiang, J.Kuo, C.L.Wu, L.Franke, C.Kallemeijn, W.W.Florea, B.I.van Meel, E.van der Marel, G.A.Codee, J.D.Boot, R.G.Davies, G.J.Overkleeft, H.S.Aerts, J.M.

(2016) ACS Cent Sci 2: 351-358

  • DOI: https://doi.org/10.1021/acscentsci.6b00057
  • Primary Citation of Related Structures:  
    5I23, 5I24

  • PubMed Abstract: 

    The development of small molecule activity-based probes (ABPs) is an evolving and powerful area of chemistry. There is a major need for synthetically accessible and specific ABPs to advance our understanding of enzymes in health and disease. α-Glucosidases are involved in diverse physiological processes including carbohydrate assimilation in the gastrointestinal tract, glycoprotein processing in the endoplasmic reticulum (ER), and intralysosomal glycogen catabolism. Inherited deficiency of the lysosomal acid α-glucosidase (GAA) causes the lysosomal glycogen storage disorder, Pompe disease. Here, we design a synthetic route for fluorescent and biotin-modified ABPs for in vitro and in situ monitoring of α-glucosidases. We show, through mass spectrometry, gel electrophoresis, and X-ray crystallography, that α-glucopyranose configured cyclophellitol aziridines label distinct retaining α-glucosidases including GAA and ER α-glucosidase II, and that this labeling can be tuned by pH. We illustrate a direct diagnostic application in Pompe disease patient cells, and discuss how the probes may be further exploited for diverse applications.


  • Organizational Affiliation

    Department of Bio-organic Synthesis, Leiden Institute of Chemistry, Leiden University , Einsteinweg 55, 2333 CC Leiden, The Netherlands.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Oligosaccharide 4-alpha-D-glucosyltransferase836Cellvibrio japonicus Ueda107Mutation(s): 0 
Gene Names: agd31BCJA_3248
EC: 2.4.1.161
UniProt
Find proteins for B3PEE6 (Cellvibrio japonicus (strain Ueda107))
Explore B3PEE6 
Go to UniProtKB:  B3PEE6
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupB3PEE6
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
66V
Query on 66V

Download Ideal Coordinates CCD File 
K [auth A]1-(8-{[(1S,2R,3S,4S,5R,6R)-2,3,4,5-tetrahydroxy-6-(hydroxymethyl)cyclohexyl]amino}octyl)triaza-1,2-dien-2-ium
C15 H31 N4 O5
KPTZFIOZQLVZBJ-SAAWNECCSA-N
PG4
Query on PG4

Download Ideal Coordinates CCD File 
B [auth A]TETRAETHYLENE GLYCOL
C8 H18 O5
UWHCKJMYHZGTIT-UHFFFAOYSA-N
SO4
Query on SO4

Download Ideal Coordinates CCD File 
C [auth A]
D [auth A]
E [auth A]
F [auth A]
G [auth A]
C [auth A],
D [auth A],
E [auth A],
F [auth A],
G [auth A],
H [auth A]
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
EDO
Query on EDO

Download Ideal Coordinates CCD File 
I [auth A],
J [auth A]
1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.187 
  • R-Value Work: 0.163 
  • R-Value Observed: 0.164 
  • Space Group: P 6 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 198α = 90
b = 198β = 90
c = 103γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
xia2data reduction
xia2data scaling
MOLREPphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
European Research CouncilUnited KingdomERC-2012-AdG-322942

Revision History  (Full details and data files)

  • Version 1.0: 2016-05-04
    Type: Initial release
  • Version 1.1: 2016-06-22
    Changes: Database references
  • Version 1.2: 2024-01-10
    Changes: Data collection, Database references, Refinement description