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- PDB-8eqx: Co-crystal structure of Chaetomium glucosidase with compound 21 -

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Basic information

Entry
Database: PDB / ID: 8eqx
TitleCo-crystal structure of Chaetomium glucosidase with compound 21
ComponentsChaetomium alpha glucosidase
KeywordsHYDROLASE/INHIBITOR / alpha glucosidase I / Hydrolase / Inhibitor complex / HYDROLASE-INHIBITOR complex
Function / homology
Function and homology information


mannosyl-oligosaccharide glucosidase / Glc3Man9GlcNAc2 oligosaccharide glucosidase activity / oligosaccharide metabolic process / protein N-linked glycosylation / endoplasmic reticulum membrane
Similarity search - Function
Glycosyl hydrolase family 63, C-terminal / Glycosyl hydrolase family 63, N-terminal / Glycosyl hydrolase family 63, N-terminal domain superfamily / Glycosyl hydrolase family 63 C-terminal domain / Glycosyl hydrolase family 63 N-terminal domain / Glycoside hydrolase family 63 / Six-hairpin glycosidase-like superfamily / Six-hairpin glycosidase superfamily
Similarity search - Domain/homology
Chem-WT5 / Mannosyl-oligosaccharide glucosidase
Similarity search - Component
Biological speciesThermochaetoides thermophila (fungus)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.5 Å
AuthorsKarade, S.S. / Mariuzza, R.A.
Funding support1items
OrganizationGrant numberCountry
Not funded
CitationJournal: J.Med.Chem. / Year: 2023
Title: Structure-Based Design of Potent Iminosugar Inhibitors of Endoplasmic Reticulum alpha-Glucosidase I with Anti-SARS-CoV-2 Activity.
Authors: Karade, S.S. / Franco, E.J. / Rojas, A.C. / Hanrahan, K.C. / Kolesnikov, A. / Yu, W. / MacKerell Jr., A.D. / Hill, D.C. / Weber, D.J. / Brown, A.N. / Treston, A.M. / Mariuzza, R.A.
History
DepositionOct 10, 2022Deposition site: RCSB / Processing site: RCSB
Revision 1.0Feb 22, 2023Provider: repository / Type: Initial release
Revision 1.1Mar 1, 2023Group: Database references / Category: citation
Item: _citation.journal_volume / _citation.page_first / _citation.page_last
Revision 1.2Oct 25, 2023Group: Data collection / Refinement description
Category: chem_comp_atom / chem_comp_bond / pdbx_initial_refinement_model
Revision 1.3Oct 23, 2024Group: Structure summary / Category: pdbx_entry_details / pdbx_modification_feature / Item: _pdbx_entry_details.has_protein_modification

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Chaetomium alpha glucosidase
B: Chaetomium alpha glucosidase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)189,51618
Polymers186,6402
Non-polymers2,87716
Water52229
1
A: Chaetomium alpha glucosidase
hetero molecules


  • defined by author
  • 94.8 kDa, 1 polymers
Theoretical massNumber of molelcules
Total (without water)94,7699
Polymers93,3201
Non-polymers1,4498
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
2
B: Chaetomium alpha glucosidase
hetero molecules


  • defined by author
  • 94.7 kDa, 1 polymers
Theoretical massNumber of molelcules
Total (without water)94,7479
Polymers93,3201
Non-polymers1,4278
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)141.392, 179.820, 180.861
Angle α, β, γ (deg.)90.000, 90.000, 90.000
Int Tables number23
Space group name H-MI222

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Components

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Protein / Sugars , 2 types, 3 molecules AB

#1: Protein Chaetomium alpha glucosidase


Mass: 93319.812 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Thermochaetoides thermophila (fungus) / Strain: DSM 1495 / CBS 144.50 / IMI 039719 / Gene: CTHT_0061620 / Cell line (production host): Expi-HEK293 / Production host: Homo sapiens (human) / References: UniProt: G0SFD1
#2: 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 , 4 types, 44 molecules

#3: Chemical ChemComp-WT5 / (2R,3R,4R,5S)-2-(hydroxymethyl)-1-{[6-({[(5M)-3-methyl-5-(1H-pyrrol-2-yl)phenyl]amino}methyl)pyridin-2-yl]methyl}piperidine-3,4,5-triol


Mass: 438.519 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: C24H30N4O4 / Feature type: SUBJECT OF INVESTIGATION
#4: Chemical
ChemComp-GOL / GLYCEROL / GLYCERIN / PROPANE-1,2,3-TRIOL


Mass: 92.094 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C3H8O3
#5: Chemical
ChemComp-SO4 / SULFATE ION


Mass: 96.063 Da / Num. of mol.: 8 / Source method: obtained synthetically / Formula: SO4
#6: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 29 / 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: 3.08 Å3/Da / Density % sol: 60.06 %
Crystal growTemperature: 297 K / Method: vapor diffusion, hanging drop / pH: 6.5 / Details: 0.1 Bis Tris pH 6.5, 1.6-2.0 M Ammonium sulfate

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Data collection

DiffractionMean temperature: 100 K / Serial crystal experiment: N
Diffraction sourceSource: SYNCHROTRON / Site: APS / Beamline: 23-ID-B / Wavelength: 1.033 Å
DetectorType: DECTRIS EIGER X 16M / Detector: PIXEL / Date: Oct 4, 2021
RadiationMonochromator: Double crystal cryo-cooled Si(111) / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.033 Å / Relative weight: 1
ReflectionResolution: 2.5→47.39 Å / Num. obs: 77194 / % possible obs: 96.83 % / Redundancy: 8.7 % / CC1/2: 0.996 / CC star: 0.99 / Rmerge(I) obs: 0.08202 / Rpim(I) all: 0.02948 / Net I/σ(I): 16.22
Reflection shellResolution: 2.5→2.594 Å / Redundancy: 9.2 % / Rmerge(I) obs: 0.7684 / Mean I/σ(I) obs: 2.11 / Num. unique obs: 7571 / CC1/2: 0.883 / CC star: 0.968 / Rpim(I) all: 0.2626 / % possible all: 96.7

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Processing

Software
NameVersionClassification
REFMAC5.8.0258refinement
PDB_EXTRACT3.27data extraction
HKL-2000v717.1data reduction
HKL-2000v717.1data scaling
PHASERphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 7T6W

7t6w


Resolution: 2.5→47.39 Å / Cor.coef. Fo:Fc: 0.958 / Cor.coef. Fo:Fc free: 0.93 / SU B: 10.62 / SU ML: 0.224 / Cross valid method: THROUGHOUT / σ(F): 0 / ESU R: 0.348 / ESU R Free: 0.266 / Stereochemistry target values: MAXIMUM LIKELIHOOD
Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS U VALUES : REFINED INDIVIDUALLY
RfactorNum. reflection% reflectionSelection details
Rfree0.2531 3686 4.8 %RANDOM
Rwork0.1914 ---
obs0.1942 73505 97.42 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK
Displacement parametersBiso max: 161.85 Å2 / Biso mean: 59.51 Å2 / Biso min: 34.55 Å2
Baniso -1Baniso -2Baniso -3
1--1.4 Å2-0 Å20 Å2
2--4.66 Å20 Å2
3----3.25 Å2
Refinement stepCycle: final / Resolution: 2.5→47.39 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms12014 0 188 29 12231
Biso mean--85.26 55.06 -
Num. residues----1532
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0080.01312597
X-RAY DIFFRACTIONr_bond_other_d0.0010.01710862
X-RAY DIFFRACTIONr_angle_refined_deg1.6181.65617188
X-RAY DIFFRACTIONr_angle_other_deg1.2951.57625106
X-RAY DIFFRACTIONr_dihedral_angle_1_deg7.76851537
X-RAY DIFFRACTIONr_dihedral_angle_2_deg33.04222.188672
X-RAY DIFFRACTIONr_dihedral_angle_3_deg17.74151837
X-RAY DIFFRACTIONr_dihedral_angle_4_deg19.5761574
X-RAY DIFFRACTIONr_chiral_restr0.0730.21565
X-RAY DIFFRACTIONr_gen_planes_refined0.0080.0214314
X-RAY DIFFRACTIONr_gen_planes_other0.0010.022825
LS refinement shellResolution: 2.505→2.57 Å / Rfactor Rfree error: 0 / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.376 292 -
Rwork0.323 5418 -
all-5710 -
obs--98.58 %

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