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- PDB-6d03: Cryo-EM structure of a Plasmodium vivax invasion complex essentia... -

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Basic information

Entry
Database: PDB / ID: 6d03
TitleCryo-EM structure of a Plasmodium vivax invasion complex essential for entry into human reticulocytes; one molecule of parasite ligand.
Components
  • Reticulocyte binding protein 2, putative
  • Serotransferrin
  • Transferrin receptor protein 1
KeywordsCELL INVASION / malaria / Plasmodium vivax / reticulocyte / invasion
Function / homology
Function and homology information


transferrin receptor activity / postsynaptic recycling endosome membrane / negative regulation of mitochondrial fusion / iron chaperone activity / transferrin transport / transferrin receptor binding / Transferrin endocytosis and recycling / positive regulation of isotype switching / basal part of cell / response to manganese ion ...transferrin receptor activity / postsynaptic recycling endosome membrane / negative regulation of mitochondrial fusion / iron chaperone activity / transferrin transport / transferrin receptor binding / Transferrin endocytosis and recycling / positive regulation of isotype switching / basal part of cell / response to manganese ion / response to copper ion / Differentiation of Keratinocytes in Interfollicular Epidermis in Mammalian Skin / response to iron ion / RND1 GTPase cycle / RND2 GTPase cycle / RHOB GTPase cycle / Golgi Associated Vesicle Biogenesis / RHOC GTPase cycle / RHOJ GTPase cycle / RHOQ GTPase cycle / CDC42 GTPase cycle / RHOH GTPase cycle / RHOG GTPase cycle / endocytic vesicle / RHOA GTPase cycle / RAC2 GTPase cycle / RAC3 GTPase cycle / regulation of postsynaptic membrane neurotransmitter receptor levels / response to retinoic acid / transport across blood-brain barrier / clathrin-coated pit / positive regulation of B cell proliferation / positive regulation of T cell proliferation / RAC1 GTPase cycle / response to nutrient / Hsp70 protein binding / ferric iron binding / osteoclast differentiation / basal plasma membrane / cellular response to leukemia inhibitory factor / cellular response to iron ion / acute-phase response / Post-translational protein phosphorylation / positive regulation of protein-containing complex assembly / clathrin-coated endocytic vesicle membrane / Iron uptake and transport / regulation of iron ion transport / ferrous iron binding / HFE-transferrin receptor complex / recycling endosome / regulation of protein stability / receptor internalization / positive regulation of receptor-mediated endocytosis / multicellular organismal-level iron ion homeostasis / positive regulation of protein localization to nucleus / recycling endosome membrane / Regulation of Insulin-like Growth Factor (IGF) transport and uptake by Insulin-like Growth Factor Binding Proteins (IGFBPs) / antibacterial humoral response / cellular response to xenobiotic stimulus / late endosome / melanosome / positive regulation of proteasomal ubiquitin-dependent protein catabolic process / Platelet degranulation / Cargo recognition for clathrin-mediated endocytosis / extracellular vesicle / double-stranded RNA binding / Clathrin-mediated endocytosis / iron ion transport / virus receptor activity / cytoplasmic vesicle / secretory granule lumen / basolateral plasma membrane / blood microparticle / vesicle / transmembrane transporter binding / intracellular iron ion homeostasis / response to hypoxia / early endosome / positive regulation of canonical NF-kappaB signal transduction / endosome / endosome membrane / intracellular signal transduction / apical plasma membrane / endoplasmic reticulum lumen / external side of plasma membrane / intracellular membrane-bounded organelle / positive regulation of gene expression / negative regulation of apoptotic process / protein-containing complex binding / protein kinase binding / perinuclear region of cytoplasm / glutamatergic synapse / enzyme binding / cell surface / protein homodimerization activity / extracellular space / RNA binding / extracellular exosome / extracellular region / identical protein binding
Similarity search - Function
NBD94 domain / Nucleotide-Binding Domain 94 of RH / Transferrin receptor protein 1/2, PA domain / Serotransferrin, mammalian / Transferrin receptor-like, dimerisation domain / Transferrin receptor-like, dimerisation domain / Transferrin receptor-like, dimerisation domain superfamily / Glutamate carboxypeptidase 2-like / Transferrin receptor-like dimerisation domain / Glucose Oxidase; domain 1 - #30 ...NBD94 domain / Nucleotide-Binding Domain 94 of RH / Transferrin receptor protein 1/2, PA domain / Serotransferrin, mammalian / Transferrin receptor-like, dimerisation domain / Transferrin receptor-like, dimerisation domain / Transferrin receptor-like, dimerisation domain superfamily / Glutamate carboxypeptidase 2-like / Transferrin receptor-like dimerisation domain / Glucose Oxidase; domain 1 - #30 / PA domain superfamily / PA domain / PA domain / Transcription Elongation Factor S-II; Chain A / Transferrin-like domain signature 2. / Transferrin family, iron binding site / Transferrin-like domain signature 1. / Transferrin-like domain signature 3. / Transferrin / Transferrin-like domain / Transferrin / Transferrin-like domain profile. / Transferrin / Glucose Oxidase; domain 1 / Peptidase M28 / Peptidase family M28 / Zn peptidases / Aminopeptidase / Periplasmic binding protein-like II / 3-Layer(bba) Sandwich / D-Maltodextrin-Binding Protein; domain 2 / Up-down Bundle / 3-Layer(aba) Sandwich / Mainly Alpha / Alpha Beta
Similarity search - Domain/homology
CARBONATE ION / : / Reticulocyte binding protein 2, putative / Transferrin receptor protein 1 / Serotransferrin
Similarity search - Component
Biological speciesHomo sapiens (human)
Plasmodium vivax (malaria parasite P. vivax)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.68 Å
AuthorsGruszczyk, J. / Huang, R.K. / Hong, C. / Yu, Z. / Tham, W.H.
CitationJournal: Nature / Year: 2018
Title: Cryo-EM structure of an essential Plasmodium vivax invasion complex.
Authors: Jakub Gruszczyk / Rick K Huang / Li-Jin Chan / Sébastien Menant / Chuan Hong / James M Murphy / Yee-Foong Mok / Michael D W Griffin / Richard D Pearson / Wilson Wong / Alan F Cowman / ...Authors: Jakub Gruszczyk / Rick K Huang / Li-Jin Chan / Sébastien Menant / Chuan Hong / James M Murphy / Yee-Foong Mok / Michael D W Griffin / Richard D Pearson / Wilson Wong / Alan F Cowman / Zhiheng Yu / Wai-Hong Tham /
Abstract: Plasmodium vivax is the most widely distributed malaria parasite that infects humans. P. vivax invades reticulocytes exclusively, and successful entry depends on specific interactions between the P. ...Plasmodium vivax is the most widely distributed malaria parasite that infects humans. P. vivax invades reticulocytes exclusively, and successful entry depends on specific interactions between the P. vivax reticulocyte-binding protein 2b (PvRBP2b) and transferrin receptor 1 (TfR1). TfR1-deficient erythroid cells are refractory to invasion by P. vivax, and anti-PvRBP2b monoclonal antibodies inhibit reticulocyte binding and block P. vivax invasion in field isolates. Here we report a high-resolution cryo-electron microscopy structure of a ternary complex of PvRBP2b bound to human TfR1 and transferrin, at 3.7 Å resolution. Mutational analyses show that PvRBP2b residues involved in complex formation are conserved; this suggests that antigens could be designed that act across P. vivax strains. Functional analyses of TfR1 highlight how P. vivax hijacks TfR1, an essential housekeeping protein, by binding to sites that govern host specificity, without affecting its cellular function of transporting iron. Crystal and solution structures of PvRBP2b in complex with antibody fragments characterize the inhibitory epitopes. Our results establish a structural framework for understanding how P. vivax reticulocyte-binding protein engages its receptor and the molecular mechanism of inhibitory monoclonal antibodies, providing important information for the design of novel vaccine candidates.
History
DepositionApr 10, 2018Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jun 20, 2018Provider: repository / Type: Initial release
Revision 1.1Jun 27, 2018Group: Data collection / Database references / Other / Category: cell / citation
Item: _cell.length_a / _cell.length_b ..._cell.length_a / _cell.length_b / _cell.length_c / _citation.pdbx_database_id_DOI / _citation.title
Revision 1.2Jul 11, 2018Group: Data collection / Database references / Category: citation / citation_author
Item: _citation.journal_id_ISSN / _citation.journal_volume ..._citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title
Revision 1.3Jul 18, 2018Group: Data collection / Category: em_imaging_optics / Item: _em_imaging_optics.energyfilter_name
Revision 1.4Dec 18, 2019Group: Data collection / Other / Category: atom_sites / cell / em_imaging_optics
Item: _atom_sites.fract_transf_matrix[1][1] / _atom_sites.fract_transf_matrix[2][2] ..._atom_sites.fract_transf_matrix[1][1] / _atom_sites.fract_transf_matrix[2][2] / _atom_sites.fract_transf_matrix[3][3] / _cell.Z_PDB / _em_imaging_optics.energyfilter_name
Revision 2.0Jul 29, 2020Group: Advisory / Atomic model ...Advisory / Atomic model / Data collection / Derived calculations / Structure summary
Category: atom_site / chem_comp ...atom_site / chem_comp / em_entity_assembly / entity / pdbx_branch_scheme / pdbx_chem_comp_identifier / pdbx_entity_branch / pdbx_entity_branch_descriptor / pdbx_entity_branch_link / pdbx_entity_branch_list / pdbx_entity_nonpoly / pdbx_nonpoly_scheme / pdbx_struct_assembly_gen / pdbx_struct_conn_angle / pdbx_unobs_or_zero_occ_atoms / pdbx_validate_close_contact / struct_asym / struct_conn / struct_site / struct_site_gen
Item: _atom_site.B_iso_or_equiv / _atom_site.Cartn_x ..._atom_site.B_iso_or_equiv / _atom_site.Cartn_x / _atom_site.Cartn_y / _atom_site.Cartn_z / _atom_site.auth_asym_id / _atom_site.auth_atom_id / _atom_site.auth_comp_id / _atom_site.auth_seq_id / _atom_site.label_asym_id / _atom_site.label_atom_id / _atom_site.label_comp_id / _atom_site.label_entity_id / _atom_site.type_symbol / _chem_comp.name / _chem_comp.type / _em_entity_assembly.entity_id_list / _pdbx_entity_nonpoly.entity_id / _pdbx_entity_nonpoly.name / _pdbx_struct_assembly_gen.asym_id_list / _pdbx_struct_conn_angle.ptnr1_label_asym_id / _pdbx_struct_conn_angle.ptnr2_label_asym_id / _pdbx_struct_conn_angle.ptnr3_label_asym_id / _pdbx_unobs_or_zero_occ_atoms.auth_asym_id / _pdbx_unobs_or_zero_occ_atoms.auth_seq_id / _pdbx_unobs_or_zero_occ_atoms.label_asym_id / _pdbx_validate_close_contact.auth_asym_id_1 / _pdbx_validate_close_contact.auth_asym_id_2 / _pdbx_validate_close_contact.auth_seq_id_1 / _pdbx_validate_close_contact.auth_seq_id_2 / _struct_conn.conn_type_id / _struct_conn.id / _struct_conn.pdbx_dist_value / _struct_conn.pdbx_leaving_atom_flag / _struct_conn.pdbx_role / _struct_conn.ptnr1_auth_asym_id / _struct_conn.ptnr1_auth_comp_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr1_label_comp_id / _struct_conn.ptnr1_label_seq_id / _struct_conn.ptnr2_auth_asym_id / _struct_conn.ptnr2_auth_comp_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id / _struct_conn.ptnr2_label_atom_id / _struct_conn.ptnr2_label_comp_id
Description: Carbohydrate remediation / Provider: repository / Type: Remediation
Revision 2.1Nov 13, 2024Group: Data collection / Database references / Structure summary
Category: chem_comp / chem_comp_atom ...chem_comp / chem_comp_atom / chem_comp_bond / database_2 / em_admin / pdbx_entry_details / pdbx_modification_feature
Item: _chem_comp.pdbx_synonyms / _database_2.pdbx_DOI ..._chem_comp.pdbx_synonyms / _database_2.pdbx_DOI / _database_2.pdbx_database_accession / _em_admin.last_update

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Structure visualization

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Structure viewerMolecule:
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Assembly

Deposited unit
A: Transferrin receptor protein 1
B: Transferrin receptor protein 1
C: Serotransferrin
D: Serotransferrin
E: Reticulocyte binding protein 2, putative
hetero molecules


Theoretical massNumber of molelcules
Total (without water)402,96225
Polymers398,9875
Non-polymers3,97520
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Protein , 3 types, 5 molecules ABCDE

#1: Protein Transferrin receptor protein 1 / Trfr / T9 / p90


Mass: 73940.477 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: TFRC / Cell line (production host): Sf21 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P02786
#2: Protein Serotransferrin / Transferrin / Beta-1 metal-binding globulin / Siderophilin


Mass: 77153.906 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P02787
#3: Protein Reticulocyte binding protein 2, putative


Mass: 96798.477 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Plasmodium vivax (malaria parasite P. vivax)
Strain: Salvador I / Gene: PVX_094255 / Production host: Escherichia coli (E. coli) / References: UniProt: A5K736

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Sugars , 3 types, 10 molecules

#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.: 5
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4DGlcpNAcb1-Glycam 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
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}}}LINUCSPDB-CARE
#5: Polysaccharide 2-acetamido-2-deoxy-beta-D-glucopyranose-(2-4)-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
DGlcpNAcb2-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/2,2,1/[a2122h-1b_1-5_2*NCC/3=O][a5122h-1b_1-5_2*NCC/3=O]/1-2/a4-b2WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+2)][D-1-deoxy-Manp]{}}}LINUCSPDB-CARE
#7: Sugar
ChemComp-NAG / 2-acetamido-2-deoxy-beta-D-glucopyranose / N-acetyl-beta-D-glucosamine / 2-acetamido-2-deoxy-beta-D-glucose / 2-acetamido-2-deoxy-D-glucose / 2-acetamido-2-deoxy-glucose / N-ACETYL-D-GLUCOSAMINE


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Formula: C8H15NO6
IdentifierTypeProgram
DGlcpNAcbCONDENSED IUPAC CARBOHYDRATE SYMBOLGMML 1.0
N-acetyl-b-D-glucopyranosamineCOMMON NAMEGMML 1.0
b-D-GlcpNAcIUPAC CARBOHYDRATE SYMBOLPDB-CARE 1.0
GlcNAcSNFG CARBOHYDRATE SYMBOLGMML 1.0

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Non-polymers , 3 types, 10 molecules

#6: Chemical ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Ca
#8: Chemical
ChemComp-FE / FE (III) ION


Mass: 55.845 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Fe
#9: Chemical
ChemComp-CO3 / CARBONATE ION


Mass: 60.009 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: CO3

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Details

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: ternary complex between human transferrin receptor 1, transferrin and Plasmodium vivax reticulocyte-binding protein 2b
Type: COMPLEX / Details: one molecule of parasite ligand / Entity ID: #1-#3 / Source: MULTIPLE SOURCES
Source (natural)Organism: homo sapiens (human)
Source (recombinant)Organism: homo sapiens (human)
Buffer solutionpH: 7.5
Buffer component
IDConc.FormulaBuffer-ID
120 mMNaHEPES1
2100 mMNaCl1
350 mMNaHCO31
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: GOLD / Grid mesh size: 400 divisions/in. / Grid type: Quantifoil R1.2/1.3
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 K

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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 magnification: 81000 X / Calibrated magnification: 37037 X / Cs: 0.01 mm / Alignment procedure: ZEMLIN TABLEAU
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingAverage exposure time: 15 sec. / Electron dose: 80 e/Å2 / Detector mode: SUPER-RESOLUTION / Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Num. of grids imaged: 1
EM imaging opticsEnergyfilter name: GIF Quantum LS
Spherical aberration corrector: A Cs corrector with two hexapole elements is operated immediately underneath the objective lens to reduce the 3rd order spherical aberration.
Image scansSampling size: 5 µm / Movie frames/image: 50

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Processing

SoftwareName: PHENIX / Version: 1.11.1_2575: / Classification: refinement
EM software
IDNameVersionCategory
1RELION1.4particle selection
2SerialEM3.4image acquisition
4CTFFIND4CTF correction
9PHENIX1.12-2829model refinement
10RELION1.4initial Euler assignment
11RELION1.4final Euler assignment
12RELION1.4classification
13RELION1.43D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 2000
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 3.68 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 637649 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00925447
ELECTRON MICROSCOPYf_angle_d1.08834460
ELECTRON MICROSCOPYf_dihedral_angle_d9.5315209
ELECTRON MICROSCOPYf_chiral_restr0.0633771
ELECTRON MICROSCOPYf_plane_restr0.0084436

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