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- PDB-8t3u: Cryo-EM Analysis of AE1 Structure in 100 mM NaCl Buffer: Form2 -

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Basic information

Entry
Database: PDB / ID: 8t3u
TitleCryo-EM Analysis of AE1 Structure in 100 mM NaCl Buffer: Form2
ComponentsBand 3 anion transport protein
KeywordsTRANSLOCASE / Band 3 anion transport protein / anion exchanger 1 (AE1) / band 3 or solute carrier family 4 member 1 (SLC4A1)
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 / monoatomic anion transmembrane transporter activity / plasma membrane phospholipid scrambling / 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 / monoatomic anion transmembrane transporter activity / plasma membrane phospholipid scrambling / chloride:bicarbonate antiporter activity / solute:inorganic anion antiporter activity / bicarbonate transport / bicarbonate transmembrane transporter activity / monoatomic anion transport / chloride transport / chloride transmembrane transporter activity / ankyrin binding / hemoglobin binding / negative regulation of glycolytic process through fructose-6-phosphate / erythrocyte development / cortical cytoskeleton / protein-membrane adaptor activity / chloride transmembrane transport / regulation of intracellular pH / protein localization to plasma membrane / Erythrocytes take up oxygen and release carbon dioxide / Erythrocytes take up carbon dioxide and release oxygen / transmembrane transport / cytoplasmic side of plasma membrane / Z disc / blood coagulation / blood microparticle / basolateral plasma membrane / protein homodimerization activity / extracellular exosome / membrane / plasma membrane
Similarity search - Function
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
Chem-PIO / DIUNDECYL PHOSPHATIDYL CHOLINE / Band 3 anion transport protein
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.97 Å
AuthorsSu, C.C.
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 the band 3 anion transport protein
Authors: Su, C.-C.
History
DepositionJun 7, 2023Deposition site: RCSB / Processing site: RCSB
Revision 1.0May 22, 2024Provider: repository / Type: Initial release
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Revision 1.1Nov 13, 2024Group: Data collection / Structure summary
Category: em_admin / pdbx_entry_details / pdbx_modification_feature
Item: _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
A: Band 3 anion transport protein
B: Band 3 anion transport protein
hetero molecules


Theoretical massNumber of molelcules
Total (without water)206,9498
Polymers203,7682
Non-polymers3,1816
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: 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) / References: UniProt: P02730
#2: 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.: 2 / Source method: obtained synthetically / 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
#3: Chemical ChemComp-PLC / DIUNDECYL PHOSPHATIDYL CHOLINE


Mass: 622.834 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C32H65NO8P / Comment: phospholipid*YM
#4: 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
Has ligand of interestN
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: AE1 / Type: COMPLEX / Entity ID: #1 / Source: NATURAL
Source (natural)Organism: Homo sapiens (human)
Buffer solutionpH: 7.5
SpecimenConc.: 0.5 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Details: This is from a heterogeneous and impure protein sample.
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: SPOT SCAN
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2500 nm / Nominal defocus min: 1000 nm
Image recordingElectron dose: 36 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

EM softwareName: PHENIX / Category: model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 2.97 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 106085 / Symmetry type: POINT
Atomic model buildingProtocol: AB INITIO MODEL
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0037502
ELECTRON MICROSCOPYf_angle_d0.60610196
ELECTRON MICROSCOPYf_dihedral_angle_d6.4041038
ELECTRON MICROSCOPYf_chiral_restr0.0421224
ELECTRON MICROSCOPYf_plane_restr0.0051216

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