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- PDB-9gtc: Crystal structure of human lysosomal acid-alpha-glucosidase, GAA,... -

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Basic information

Entry
Database: PDB / ID: 9gtc
TitleCrystal structure of human lysosomal acid-alpha-glucosidase, GAA, in complex with iminosugar compound 4g
ComponentsLysosomal alpha-glucosidase
KeywordsHYDROLASE / acid-alpha-glucosidase / lysosomal / iminosugar / Pompe disease
Function / homology
Function and homology information


vacuolar sequestering / autolysosome lumen / maltose metabolic process / alpha-glucosidase activity / sucrose metabolic process / Glycogen storage disease type II (GAA) / alpha-1,4-glucosidase activity / alpha-glucosidase / neuromuscular process controlling posture / glycophagy ...vacuolar sequestering / autolysosome lumen / maltose metabolic process / alpha-glucosidase activity / sucrose metabolic process / Glycogen storage disease type II (GAA) / alpha-1,4-glucosidase activity / alpha-glucosidase / neuromuscular process controlling posture / glycophagy / tissue development / diaphragm contraction / regulation of the force of heart contraction / glycogen catabolic process / aorta development / lysosome organization / azurophil granule membrane / neuromuscular process controlling balance / Glycogen breakdown (glycogenolysis) / muscle cell cellular homeostasis / tertiary granule membrane / ficolin-1-rich granule membrane / heart morphogenesis / cardiac muscle contraction / lysosomal lumen / locomotory behavior / glucose metabolic process / carbohydrate binding / lysosome / lysosomal membrane / intracellular membrane-bounded organelle / Neutrophil degranulation / extracellular exosome / membrane / plasma membrane
Similarity search - Function
P-type trefoil, conserved site / P-type 'Trefoil' domain signature. / Trefoil (P-type) domain / P-type trefoil domain / P-type trefoil domain superfamily / P-type 'Trefoil' domain profile. / P or trefoil or TFF domain / Glycosyl hydrolases family 31, conserved site / Glycosyl hydrolases family 31 signature 2. / Glycosyl hydrolases family 31, active site ...P-type trefoil, conserved site / P-type 'Trefoil' domain signature. / Trefoil (P-type) domain / P-type trefoil domain / P-type trefoil domain superfamily / P-type 'Trefoil' domain profile. / P or trefoil or TFF domain / Glycosyl hydrolases family 31, conserved site / Glycosyl hydrolases family 31 signature 2. / Glycosyl hydrolases family 31, active site / Glycosyl hydrolases family 31 active site. / Glycoside hydrolase family 31, N-terminal domain / Glycosyl hydrolase 31 N-terminal galactose mutarotase-like domain / : / Glycosyl hydrolase family 31 C-terminal domain / Glycoside hydrolase family 31 / Glycosyl hydrolases family 31 TIM-barrel domain / Galactose mutarotase-like domain superfamily / Glycosyl hydrolase, all-beta / Glycoside hydrolase superfamily
Similarity search - Domain/homology
: / DI(HYDROXYETHYL)ETHER / Lysosomal alpha-glucosidase
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / SYNCHROTRON / FOURIER SYNTHESIS / Resolution: 2.58 Å
AuthorsSulzenbacher, G. / Roig-Zamboni, V. / Moracci, M. / Parenti, G. / Py, S.
Funding support France, 1items
OrganizationGrant numberCountry
Other government France
CitationJournal: J.Med.Chem. / Year: 2025
Title: C -Branched Iminosugars as Selective Pharmacological Chaperones of Lysosomal alpha-Glucosidase for the Treatment of Pompe Disease.
Authors: Vieira Da Cruz, A. / Perraudin, V. / Minopoli, N. / Iacono, R. / Roig-Zamboni, V. / Bossio, A. / Tangara, S. / Fayolle, M. / Kanazawa, A. / Philouze, C. / Tarallo, A. / Heming, J.J.A. / ...Authors: Vieira Da Cruz, A. / Perraudin, V. / Minopoli, N. / Iacono, R. / Roig-Zamboni, V. / Bossio, A. / Tangara, S. / Fayolle, M. / Kanazawa, A. / Philouze, C. / Tarallo, A. / Heming, J.J.A. / Artola, M. / Behr, J.B. / Overkleeft, H.S. / Moracci, M. / Sulzenbacher, G. / Parenti, G. / Py, S.
History
DepositionSep 17, 2024Deposition site: PDBE / Processing site: PDBE
Revision 1.0Oct 1, 2025Provider: repository / Type: Initial release
Revision 1.1Oct 8, 2025Group: Database references / Category: citation / citation_author
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation_author.identifier_ORCID

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Lysosomal alpha-glucosidase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)110,13933
Polymers105,4481
Non-polymers4,69032
Water3,963220
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area7320 Å2
ΔGint-51 kcal/mol
Surface area31760 Å2
MethodPISA
Unit cell
Length a, b, c (Å)97.181, 102.652, 129.777
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121

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Components

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Protein , 1 types, 1 molecules A

#1: Protein Lysosomal alpha-glucosidase / Acid maltase / Aglucosidase alfa


Mass: 105448.477 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GAA / Production host: Cricetulus griseus (Chinese hamster) / References: UniProt: P10253, alpha-glucosidase

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Sugars , 3 types, 5 molecules

#2: Polysaccharide 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta- ...2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 570.542 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4[LFucpa1-6]DGlcpNAcb1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/2,3,2/[a2122h-1b_1-5_2*NCC/3=O][a1221m-1a_1-5]/1-1-2/a4-b1_a6-c1WURCSPDB2Glycan 1.1.0
[][D-1-deoxy-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}[(6+1)][a-L-Fucp]{}}LINUCSPDB-CARE
#3: Polysaccharide beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta- ...beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 586.542 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/2,3,2/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1b_1-5]/1-1-2/a4-b1_b4-c1WURCSPDB2Glycan 1.1.0
[][D-1-deoxy-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{}}}LINUCSPDB-CARE
#4: Polysaccharide 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 424.401 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4DGlcpNAcb1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/1,2,1/[a2122h-1b_1-5_2*NCC/3=O]/1-1/a4-b1WURCSPDB2Glycan 1.1.0
[][D-1-deoxy-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}}LINUCSPDB-CARE

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Non-polymers , 7 types, 247 molecules

#5: Chemical ChemComp-A1IO7 / (2~{R},3~{R},4~{R},5~{S})-2-(hydroxymethyl)-2-pentyl-piperidine-3,4,5-triol


Mass: 233.305 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C11H23NO4 / Feature type: SUBJECT OF INVESTIGATION
#6: Chemical
ChemComp-SO4 / SULFATE ION


Mass: 96.063 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: SO4
#7: Chemical
ChemComp-CL / CHLORIDE ION


Mass: 35.453 Da / Num. of mol.: 9 / Source method: obtained synthetically / Formula: Cl
#8: Chemical
ChemComp-GOL / GLYCEROL / GLYCERIN / PROPANE-1,2,3-TRIOL


Mass: 92.094 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C3H8O3
#9: Chemical ChemComp-PEG / DI(HYDROXYETHYL)ETHER


Mass: 106.120 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C4H10O3
#10: Chemical
ChemComp-EDO / 1,2-ETHANEDIOL / ETHYLENE GLYCOL


Mass: 62.068 Da / Num. of mol.: 7 / Source method: obtained synthetically / Formula: C2H6O2
#11: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 220 / Source method: isolated from a natural source / Formula: H2O

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Details

Has ligand of interestY
Has protein modificationY

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 3.4 Å3/Da / Density % sol: 63 %
Crystal growTemperature: 293 K / Method: vapor diffusion, hanging drop / pH: 7
Details: 1.9 M AMMONIUM SULPHATE, 0.1 M HEPES, 2% V/V PEG400, PH 7
PH range: 7

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Data collection

DiffractionMean temperature: 100 K / Serial crystal experiment: N
Diffraction sourceSource: SYNCHROTRON / Site: SOLEIL / Beamline: PROXIMA 2 / Wavelength: 0.980114 Å
DetectorType: DECTRIS EIGER X 9M / Detector: PIXEL / Date: Jul 27, 2021
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.980114 Å / Relative weight: 1
ReflectionResolution: 2.58→48.64 Å / Num. obs: 41193 / % possible obs: 99.1 % / Redundancy: 9.4 % / CC1/2: 0.993 / Rmerge(I) obs: 0.202 / Rpim(I) all: 0.069 / Rrim(I) all: 0.213 / Χ2: 0.99 / Net I/σ(I): 10.2
Reflection shellResolution: 2.58→2.69 Å / Redundancy: 9.1 % / Rmerge(I) obs: 1.091 / Mean I/σ(I) obs: 2.1 / Num. unique obs: 4245 / CC1/2: 0.706 / Rpim(I) all: 0.374 / Rrim(I) all: 1.155 / Χ2: 1.04

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Processing

Software
NameVersionClassification
REFMAC5.8.0267refinement
Aimlessdata scaling
XDSdata reduction
REFMACphasing
RefinementMethod to determine structure: FOURIER SYNTHESIS / Resolution: 2.58→48.64 Å / Cor.coef. Fo:Fc: 0.952 / Cor.coef. Fo:Fc free: 0.925 / SU B: 8.325 / SU ML: 0.173 / Cross valid method: FREE R-VALUE / ESU R: 0.374 / ESU R Free: 0.243 / Stereochemistry target values: MAXIMUM LIKELIHOOD
RfactorNum. reflection% reflectionSelection details
Rfree0.21472 2053 5 %Taken over from parent data set
Rwork0.17032 ---
obs0.17253 39079 99.01 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK
Displacement parametersBiso mean: 31.596 Å2
Baniso -1Baniso -2Baniso -3
1-0.45 Å2-0 Å2-0 Å2
2--1.18 Å2-0 Å2
3----1.63 Å2
Refinement stepCycle: 1 / Resolution: 2.58→48.64 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms6672 0 293 220 7185
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0030.0127157
X-RAY DIFFRACTIONr_bond_other_d
X-RAY DIFFRACTIONr_angle_refined_deg0.9011.6819782
X-RAY DIFFRACTIONr_angle_other_deg
X-RAY DIFFRACTIONr_dihedral_angle_1_deg6.4415845
X-RAY DIFFRACTIONr_dihedral_angle_2_deg32.86222.131352
X-RAY DIFFRACTIONr_dihedral_angle_3_deg13.407151029
X-RAY DIFFRACTIONr_dihedral_angle_4_deg15.861540
X-RAY DIFFRACTIONr_chiral_restr0.0770.2941
X-RAY DIFFRACTIONr_gen_planes_refined0.0060.025428
X-RAY DIFFRACTIONr_gen_planes_other
X-RAY DIFFRACTIONr_nbd_refined
X-RAY DIFFRACTIONr_nbd_other
X-RAY DIFFRACTIONr_nbtor_refined
X-RAY DIFFRACTIONr_nbtor_other
X-RAY DIFFRACTIONr_xyhbond_nbd_refined
X-RAY DIFFRACTIONr_xyhbond_nbd_other
X-RAY DIFFRACTIONr_metal_ion_refined
X-RAY DIFFRACTIONr_metal_ion_other
X-RAY DIFFRACTIONr_symmetry_vdw_refined
X-RAY DIFFRACTIONr_symmetry_vdw_other
X-RAY DIFFRACTIONr_symmetry_hbond_refined
X-RAY DIFFRACTIONr_symmetry_hbond_other
X-RAY DIFFRACTIONr_symmetry_metal_ion_refined
X-RAY DIFFRACTIONr_symmetry_metal_ion_other
X-RAY DIFFRACTIONr_mcbond_it1.5442.9343392
X-RAY DIFFRACTIONr_mcbond_other
X-RAY DIFFRACTIONr_mcangle_it2.5624.3934233
X-RAY DIFFRACTIONr_mcangle_other
X-RAY DIFFRACTIONr_scbond_it2.6913.3163765
X-RAY DIFFRACTIONr_scbond_other
X-RAY DIFFRACTIONr_scangle_it
X-RAY DIFFRACTIONr_scangle_other
X-RAY DIFFRACTIONr_long_range_B_refined5.78940.42110519
X-RAY DIFFRACTIONr_long_range_B_other
X-RAY DIFFRACTIONr_rigid_bond_restr
X-RAY DIFFRACTIONr_sphericity_free
X-RAY DIFFRACTIONr_sphericity_bonded
LS refinement shellResolution: 2.581→2.648 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.31 127 -
Rwork0.285 2501 -
obs--87.08 %

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