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- PDB-8d43: Cryo-EM structure of human Kidney Glucosidase II -

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Basic information

Entry
Database: PDB / ID: 8d43
TitleCryo-EM structure of human Kidney Glucosidase II
Components
  • Glucosidase 2 subunit beta
  • Neutral alpha-glucosidase AB
KeywordsHYDROLASE / glucosidase II / GANAB / glycosyl hydrolase 31 family
Function / homology
Function and homology information


Glc2Man9GlcNAc2 oligosaccharide glucosidase activity / glucan 1,3-alpha-glucosidase activity / mannosyl-oligosaccharide alpha-1,3-glucosidase / Calnexin/calreticulin cycle / alpha-glucosidase activity / glucosidase II complex / N-glycan processing / Maturation of spike protein / Advanced glycosylation endproduct receptor signaling / protein kinase C binding ...Glc2Man9GlcNAc2 oligosaccharide glucosidase activity / glucan 1,3-alpha-glucosidase activity / mannosyl-oligosaccharide alpha-1,3-glucosidase / Calnexin/calreticulin cycle / alpha-glucosidase activity / glucosidase II complex / N-glycan processing / Maturation of spike protein / Advanced glycosylation endproduct receptor signaling / protein kinase C binding / N-glycan trimming in the ER and Calnexin/Calreticulin cycle / Post-translational protein phosphorylation / phosphoprotein binding / liver development / Regulation of Insulin-like Growth Factor (IGF) transport and uptake by Insulin-like Growth Factor Binding Proteins (IGFBPs) / melanosome / carbohydrate binding / Maturation of spike protein / carbohydrate metabolic process / transmembrane transporter binding / intracellular signal transduction / endoplasmic reticulum lumen / intracellular membrane-bounded organelle / calcium ion binding / endoplasmic reticulum / Golgi apparatus / RNA binding / extracellular exosome / membrane
Similarity search - Function
Glucosidase II beta subunit, N-terminal / Glucosidase II beta subunit-like / Glucosidase 2 subunit beta-like / Glucosidase II beta subunit-like / Glucosidase II beta subunit-like protein / Glycosyl hydrolases family 31, conserved site / Glycosyl hydrolases family 31 signature 2. / Glycosyl hydrolases family 31, active site / Glycosyl hydrolases family 31 active site. / Mannose-6-phosphate receptor binding domain superfamily ...Glucosidase II beta subunit, N-terminal / Glucosidase II beta subunit-like / Glucosidase 2 subunit beta-like / Glucosidase II beta subunit-like / Glucosidase II beta subunit-like protein / Glycosyl hydrolases family 31, conserved site / Glycosyl hydrolases family 31 signature 2. / Glycosyl hydrolases family 31, active site / Glycosyl hydrolases family 31 active site. / Mannose-6-phosphate receptor binding domain superfamily / MRH domain / MRH domain profile. / Glycoside hydrolase family 31, N-terminal domain / Glycosyl hydrolase 31 N-terminal galactose mutarotase-like domain / EF hand / : / Glycosyl hydrolase family 31 C-terminal domain / Glycoside hydrolase family 31 / Glycosyl hydrolases family 31 TIM-barrel domain / Endoplasmic reticulum targeting sequence. / LDL receptor-like superfamily / Galactose mutarotase-like domain superfamily / Glycosyl hydrolase, all-beta / EF-Hand 1, calcium-binding site / EF-hand calcium-binding domain. / EF-hand calcium-binding domain profile. / EF-hand domain / EF-hand domain pair / Glycoside hydrolase superfamily
Similarity search - Domain/homology
Glucosidase 2 subunit beta / Neutral alpha-glucosidase AB
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.88 Å
AuthorsLyu, M. / Yu, E.W.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID) United States
CitationJournal: To Be Published
Title: Cryo-EM structure of human Kidney Glucosidase II
Authors: Lyu, M. / Yu, E.W.
History
DepositionJun 1, 2022Deposition site: RCSB / Processing site: RCSB
Revision 1.0Nov 16, 2022Provider: repository / Type: Initial release
Revision 1.0Nov 16, 2022Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Nov 16, 2022Data content type: FSC / Data content type: FSC / Provider: repository / Type: Initial release
Revision 1.0Nov 16, 2022Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Nov 16, 2022Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Nov 16, 2022Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Nov 16, 2022Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release
Revision 1.0Nov 16, 2022Data content type: FSC / Data content type: FSC / Provider: repository / Type: Initial release
Revision 1.0Nov 16, 2022Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Nov 16, 2022Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Nov 16, 2022Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Nov 16, 2022Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release
Revision 1.1Nov 6, 2024Group: Data collection / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / em_admin / pdbx_entry_details / pdbx_modification_feature
Item: _em_admin.last_update / _pdbx_entry_details.has_protein_modification
Revision 1.2May 21, 2025Group: Data collection / Category: em_admin / em_software / Item: _em_admin.last_update / _em_software.name
Revision 1.1May 21, 2025Data content type: EM metadata / Data content type: EM metadata / EM metadata / Group: Data processing / Experimental summary / Data content type: EM metadata / EM metadata / Category: em_admin / em_software / Data content type: EM metadata / EM metadata / Item: _em_admin.last_update / _em_software.name

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Neutral alpha-glucosidase AB
B: Glucosidase 2 subunit beta
hetero molecules


Theoretical massNumber of molelcules
Total (without water)167,3125
Polymers166,4832
Non-polymers8293
Water181
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein Neutral alpha-glucosidase AB / Alpha-glucosidase 2 / Glucosidase II subunit alpha


Mass: 106997.828 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GANAB, G2AN, KIAA0088 / Production host: Homo sapiens (human)
References: UniProt: Q14697, mannosyl-oligosaccharide alpha-1,3-glucosidase
#2: Protein Glucosidase 2 subunit beta / 80K-H protein / Glucosidase II subunit beta / Protein kinase C substrate 60.1 kDa protein heavy chain / PKCSH


Mass: 59485.223 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PRKCSH, G19P1 / Production host: Homo sapiens (human) / References: UniProt: P14314
#3: Polysaccharide alpha-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1- ...alpha-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 748.682 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpa1-3DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/3,4,3/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1b_1-5][a1122h-1a_1-5]/1-1-2-3/a4-b1_b4-c1_c3-d1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{[(3+1)][a-D-Manp]{}}}}}LINUCSPDB-CARE
#4: Chemical ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Ca / Feature type: SUBJECT OF INVESTIGATION
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Formula: H2O
Has ligand of interestY
Has protein modificationY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: glucosidase II / Type: COMPLEX / Entity ID: #1-#2 / Source: RECOMBINANT
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 7.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2500 nm / Nominal defocus min: 1000 nm
Image recordingElectron dose: 38.75 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.20.1_4487: / Classification: refinement
EM softwareName: PHENIX / Category: model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 2.88 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 180286 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0067986
ELECTRON MICROSCOPYf_angle_d0.81510875
ELECTRON MICROSCOPYf_dihedral_angle_d6.8931097
ELECTRON MICROSCOPYf_chiral_restr0.0481155
ELECTRON MICROSCOPYf_plane_restr0.0071427

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