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- PDB-7uz3: Band 3-Glycophorin A complex, outward facing -

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Basic information

Entry
Database: PDB / ID: 7uz3
TitleBand 3-Glycophorin A complex, outward facing
Components
  • Band 3 anion transport protein
  • Glycophorin-A
KeywordsTRANSPORT PROTEIN / Membrane Protein / Anion Exchange / Erythrocyte / Glycoprotein
Function / homology
Function and homology information


pH elevation / Defective SLC4A1 causes hereditary spherocytosis type 4 (HSP4), distal renal tubular acidosis (dRTA) and dRTA with hemolytic anemia (dRTA-HA) / negative regulation of urine volume / Bicarbonate transporters / intracellular monoatomic ion homeostasis / ankyrin-1 complex / plasma membrane phospholipid scrambling / monoatomic anion transmembrane transporter activity / chloride:bicarbonate antiporter activity / solute:inorganic anion antiporter activity ...pH elevation / Defective SLC4A1 causes hereditary spherocytosis type 4 (HSP4), distal renal tubular acidosis (dRTA) and dRTA with hemolytic anemia (dRTA-HA) / negative regulation of urine volume / Bicarbonate transporters / intracellular monoatomic ion homeostasis / ankyrin-1 complex / plasma membrane phospholipid scrambling / monoatomic anion transmembrane transporter activity / chloride:bicarbonate antiporter activity / solute:inorganic anion antiporter activity / bicarbonate transmembrane transporter activity / bicarbonate transport / monoatomic anion transport / chloride transmembrane transporter activity / chloride transport / ankyrin binding / negative regulation of glycolytic process through fructose-6-phosphate / hemoglobin binding / cortical cytoskeleton / erythrocyte development / protein-membrane adaptor activity / chloride transmembrane transport / protein localization to plasma membrane / regulation of intracellular pH / Cell surface interactions at the vascular wall / Erythrocytes take up oxygen and release carbon dioxide / Erythrocytes take up carbon dioxide and release oxygen / transmembrane transport / Z disc / cytoplasmic side of plasma membrane / blood coagulation / virus receptor activity / basolateral plasma membrane / blood microparticle / protein homodimerization activity / extracellular exosome / nucleoplasm / identical protein binding / membrane / plasma membrane / cytosol
Similarity search - Function
Glycophorin, conserved site / : / Glycophorin A / Glycophorin A signature. / Glycophorin / Anion exchange protein 1 / Anion exchange protein / Anion exchange, conserved site / Anion exchangers family signature 1. / Anion exchangers family signature 2. ...Glycophorin, conserved site / : / Glycophorin A / Glycophorin A signature. / Glycophorin / Anion exchange protein 1 / Anion exchange protein / Anion exchange, conserved site / Anion exchangers family signature 1. / Anion exchangers family signature 2. / Band 3 cytoplasmic domain / Band 3 cytoplasmic domain / Phosphotransferase/anion transporter / Bicarbonate transporter, eukaryotic / Bicarbonate transporter-like, transmembrane domain / HCO3- transporter integral membrane domain
Similarity search - Domain/homology
CHOLESTEROL / Chem-PIO / DIUNDECYL PHOSPHATIDYL CHOLINE / Glycophorin-A / Band 3 anion transport protein
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.35 Å
AuthorsVallese, F. / Kim, K. / Yen, L.Y. / Johnston, J.D. / Noble, A.J. / Cali, T. / Clarke, O.B.
Funding support1items
OrganizationGrant numberCountry
Not funded
CitationJournal: Nat Struct Mol Biol / Year: 2022
Title: Architecture of the human erythrocyte ankyrin-1 complex.
Authors: Francesca Vallese / Kookjoo Kim / Laura Y Yen / Jake D Johnston / Alex J Noble / Tito Calì / Oliver Biggs Clarke /
Abstract: The stability and shape of the erythrocyte membrane is provided by the ankyrin-1 complex, but how it tethers the spectrin-actin cytoskeleton to the lipid bilayer and the nature of its association ...The stability and shape of the erythrocyte membrane is provided by the ankyrin-1 complex, but how it tethers the spectrin-actin cytoskeleton to the lipid bilayer and the nature of its association with the band 3 anion exchanger and the Rhesus glycoproteins remains unknown. Here we present structures of ankyrin-1 complexes purified from human erythrocytes. We reveal the architecture of a core complex of ankyrin-1, the Rhesus proteins RhAG and RhCE, the band 3 anion exchanger, protein 4.2, glycophorin A and glycophorin B. The distinct T-shaped conformation of membrane-bound ankyrin-1 facilitates recognition of RhCE and, unexpectedly, the water channel aquaporin-1. Together, our results uncover the molecular details of ankyrin-1 association with the erythrocyte membrane, and illustrate the mechanism of ankyrin-mediated membrane protein clustering.
History
DepositionMay 8, 2022Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jul 20, 2022Provider: repository / Type: Initial release
Revision 1.1Jul 27, 2022Group: Database references / Category: citation
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_PubMed / _citation.title
Revision 1.2Oct 16, 2024Group: Data collection / Refinement description / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / em_3d_fitting_list / em_admin / pdbx_entry_details / pdbx_initial_refinement_model / pdbx_modification_feature
Item: _em_3d_fitting_list.accession_code / _em_3d_fitting_list.initial_refinement_model_id ..._em_3d_fitting_list.accession_code / _em_3d_fitting_list.initial_refinement_model_id / _em_3d_fitting_list.source_name / _em_3d_fitting_list.type / _em_admin.last_update / _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
B: Glycophorin-A
D: Glycophorin-A
C: Band 3 anion transport protein
E: Band 3 anion transport protein
hetero molecules


Theoretical massNumber of molelcules
Total (without water)242,86414
Polymers236,4654
Non-polymers6,39910
Water2,756153
1


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

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Components

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Protein , 2 types, 4 molecules BDCE

#1: Protein Glycophorin-A / MN sialoglycoprotein / PAS-2 / Sialoglycoprotein alpha


Mass: 16348.433 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / Organ: Blood / Tissue: Erythrocytes / References: UniProt: P02724
#2: Protein Band 3 anion transport protein / Anion exchange protein 1 / AE 1 / Anion exchanger 1 / Solute carrier family 4 member 1


Mass: 101883.859 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / Organ: Blood / Tissue: Erythrocytes / References: UniProt: P02730

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Sugars , 1 types, 2 molecules

#3: Polysaccharide alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-4)]beta-D-mannopyranose-(1-4)-2-acetamido-2- ...alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-4)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 1056.964 Da / Num. of mol.: 2 / Source method: obtained synthetically
DescriptorTypeProgram
DManpa1-3[DManpa1-4]DManpb1-4DGlcpNAcb1-4[LFucpa1-6]DGlcpNAcb1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/4,6,5/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1b_1-5][a1122h-1a_1-5][a1221m-1a_1-5]/1-1-2-3-3-4/a4-b1_a6-f1_b4-c1_c3-d1_c4-e1WURCSPDB2Glycan 1.1.0
[][D-1-deoxy-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{[(3+1)][a-D-Manp]{}[(4+1)][a-D-Manp]{}}}[(6+1)][a-L-Fucp]{}}LINUCSPDB-CARE

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Non-polymers , 4 types, 161 molecules

#4: Chemical
ChemComp-CLR / CHOLESTEROL


Mass: 386.654 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C27H46O
#5: Chemical ChemComp-PLC / DIUNDECYL PHOSPHATIDYL CHOLINE


Mass: 622.834 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Formula: C32H65NO8P / Comment: phospholipid*YM
#6: Chemical ChemComp-PIO / [(2R)-2-octanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tris(oxidanyl)-4,5-diphosphonooxy-cyclohexyl]oxy-phosphoryl]oxy-propyl] octanoate / dioctanoyl l-alpha-phosphatidyl-d-myo-inositol 4,5-diphosphate


Mass: 746.566 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C25H49O19P3 / Feature type: SUBJECT OF INVESTIGATION
#7: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 153 / 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: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: Band 3 anion exchanger complexed with glycophorin A, in outward facing state.
Type: COMPLEX
Details: Particle set isolated by 3D classification from mixture mostly containing ankyrin complexes.
Entity ID: #1-#2 / Source: NATURAL
Source (natural)Organism: Homo sapiens (human) / Cellular location: Plasma membrane / Organ: Blood / Tissue: Erythrocytes
Buffer solutionpH: 7.4
Details: Final gel filtration buffer contained 0.05 % (w/v) digitonin, 130mM KCl, 20mM HEPES pH 7.4, 1mM ATP, 1mM MgCl2, 1mM PMSF. Peak fractions were concentrated to 8mg/mL, and 0.01% (w/v) of ...Details: Final gel filtration buffer contained 0.05 % (w/v) digitonin, 130mM KCl, 20mM HEPES pH 7.4, 1mM ATP, 1mM MgCl2, 1mM PMSF. Peak fractions were concentrated to 8mg/mL, and 0.01% (w/v) of glycyrrhizic acid was added immediately prior to vitrification.
SpecimenConc.: 8 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Details: Ankyrin complex mixture, purified from digitonin-solubilized erythrocyte ghost membranes.
Specimen supportGrid material: GOLD / Grid mesh size: 300 divisions/in. / Grid type: UltrAuFoil R0.6/1
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 K / Details: 4-6 seconds, wait time 30 seconds.

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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: 1500 nm / Nominal defocus min: 500 nm / Cs: 2.7 mm / Alignment procedure: COMA FREE
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingAverage exposure time: 2.5 sec. / Electron dose: 58 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) / Num. of grids imaged: 2 / Num. of real images: 14464 / Details: Two grids were imaged in a single session.
EM imaging opticsEnergyfilter name: GIF Bioquantum / Energyfilter slit width: 20 eV

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Processing

SoftwareName: PHENIX / Version: 1.20.1_4487: / Classification: refinement
EM software
IDNameVersionCategory
2Leginonimage acquisition
4cryoSPARC3CTF correction
7Coot0.9.8model fitting
9PHENIX1.20.1model refinement
10cryoSPARC3initial Euler assignment
11cryoSPARC3final Euler assignment
13cryoSPARC33D reconstruction
CTF correctionDetails: Patch CTF (cryoSPARC v3) followed by per particle defocus refinement and refinement of higher order aberrations (cryoSPARC v3)
Type: PHASE FLIPPING AND AMPLITUDE CORRECTION
SymmetryPoint symmetry: C2 (2 fold cyclic)
3D reconstructionResolution: 2.35 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 137158 / Algorithm: BACK PROJECTION / Symmetry type: POINT
Atomic model buildingProtocol: FLEXIBLE FIT / Space: REAL
Atomic model buildingPDB-ID: 4YZF

4yzf


Pdb chain-ID: A / Accession code: 4YZF / Source name: PDB / Type: experimental model
RefinementCross valid method: NONE
Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2
Displacement parametersBiso mean: 26.67 Å2
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0059388
ELECTRON MICROSCOPYf_angle_d0.66812774
ELECTRON MICROSCOPYf_dihedral_angle_d13.4911436
ELECTRON MICROSCOPYf_chiral_restr0.0741562
ELECTRON MICROSCOPYf_plane_restr0.0051498

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