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- PDB-9va1: Structure of the ACE2-B0AT1 bound with tryptophan -

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Basic information

Entry
Database: PDB / ID: 9va1
TitleStructure of the ACE2-B0AT1 bound with tryptophan
Components
  • Angiotensin-converting enzyme 2
  • Sodium-dependent neutral amino acid transporter B(0)AT1
KeywordsMEMBRANE PROTEIN / complex / amino acid
Function / homology
Function and homology information


Defective transport of neurotransmitters by SLC6A19 causes Hartnup disorder (HND) / Defective transport of amino acids by SLC6A19 causes Hartnup disorder (HND) / neutral amino acid transport / neutral L-amino acid transmembrane transporter activity / Amino acid transport across the plasma membrane / symporter activity / amino acid transmembrane transporter activity / SLC-mediated transport of neurotransmitters / positive regulation of amino acid transport / angiotensin-converting enzyme 2 ...Defective transport of neurotransmitters by SLC6A19 causes Hartnup disorder (HND) / Defective transport of amino acids by SLC6A19 causes Hartnup disorder (HND) / neutral amino acid transport / neutral L-amino acid transmembrane transporter activity / Amino acid transport across the plasma membrane / symporter activity / amino acid transmembrane transporter activity / SLC-mediated transport of neurotransmitters / positive regulation of amino acid transport / angiotensin-converting enzyme 2 / positive regulation of L-proline import across plasma membrane / Hydrolases; Acting on peptide bonds (peptidases); Metallocarboxypeptidases / angiotensin-mediated drinking behavior / amino acid transport / positive regulation of gap junction assembly / tryptophan transport / regulation of systemic arterial blood pressure by renin-angiotensin / maternal process involved in female pregnancy / regulation of cardiac conduction / peptidyl-dipeptidase activity / transporter activator activity / regulation of vasoconstriction / Metabolism of Angiotensinogen to Angiotensins / carboxypeptidase activity / angiotensin maturation / viral life cycle / receptor-mediated endocytosis of virus by host cell / Attachment and Entry / metallocarboxypeptidase activity / positive regulation of cardiac muscle contraction / response to nutrient / regulation of cytokine production / blood vessel diameter maintenance / sodium ion transmembrane transport / negative regulation of smooth muscle cell proliferation / brush border membrane / negative regulation of ERK1 and ERK2 cascade / positive regulation of reactive oxygen species metabolic process / metallopeptidase activity / endocytic vesicle membrane / regulation of cell population proliferation / virus receptor activity / regulation of inflammatory response / endopeptidase activity / Induction of Cell-Cell Fusion / Potential therapeutics for SARS / membrane fusion / Attachment and Entry / entry receptor-mediated virion attachment to host cell / receptor-mediated virion attachment to host cell / apical plasma membrane / cilium / membrane raft / endoplasmic reticulum lumen / symbiont entry into host cell / cell surface / negative regulation of transcription by RNA polymerase II / : / extracellular exosome / extracellular region / zinc ion binding / membrane / identical protein binding / plasma membrane
Similarity search - Function
Neutral amino acid SLC6 transporter / Sodium:neurotransmitter symporter family signature 1. / Sodium:neurotransmitter symporter / Sodium:neurotransmitter symporter superfamily / Sodium:neurotransmitter symporter family / Sodium:neurotransmitter symporter family profile. / Collectrin domain / Renal amino acid transporter / Collectrin-like domain profile. / Peptidase M2, peptidyl-dipeptidase A ...Neutral amino acid SLC6 transporter / Sodium:neurotransmitter symporter family signature 1. / Sodium:neurotransmitter symporter / Sodium:neurotransmitter symporter superfamily / Sodium:neurotransmitter symporter family / Sodium:neurotransmitter symporter family profile. / Collectrin domain / Renal amino acid transporter / Collectrin-like domain profile. / Peptidase M2, peptidyl-dipeptidase A / Angiotensin-converting enzyme / Peptidase family M2 domain profile. / Neutral zinc metallopeptidases, zinc-binding region signature.
Similarity search - Domain/homology
TRYPTOPHAN / Sodium-dependent neutral amino acid transporter B(0)AT1 / Angiotensin-converting enzyme 2
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.24 Å
AuthorsYan, R.H. / Zhang, T.
Funding support China, 1items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC) China
CitationJournal: Oral Science and Homeostatic Medicine / Year: 2025
Title: Structural basis of aromatic amino acid recognition by the human ACE2-B0AT1 transporter complex
Authors: Zhang, T. / Zeng, Q. / Xu, C. / Liang, H. / Zhang, S. / Wang, Z. / Yan, R.
History
DepositionJun 2, 2025Deposition site: PDBJ / Processing site: PDBC
Revision 1.0May 13, 2026Provider: repository / Type: Initial release
Revision 1.0May 13, 2026Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0May 13, 2026Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0May 13, 2026Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0May 13, 2026Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0May 13, 2026Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
C: Angiotensin-converting enzyme 2
D: Sodium-dependent neutral amino acid transporter B(0)AT1
A: Angiotensin-converting enzyme 2
B: Sodium-dependent neutral amino acid transporter B(0)AT1
hetero molecules


Theoretical massNumber of molelcules
Total (without water)333,5926
Polymers333,1834
Non-polymers4082
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

#1: Protein Angiotensin-converting enzyme 2 / Angiotensin-converting enzyme homolog / ACEH / Angiotensin-converting enzyme-related ...Angiotensin-converting enzyme homolog / ACEH / Angiotensin-converting enzyme-related carboxypeptidase / ACE-related carboxypeptidase / Metalloprotease MPROT15


Mass: 93504.578 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: ACE2, UNQ868/PRO1885 / Production host: Homo sapiens (human)
References: UniProt: Q9BYF1, angiotensin-converting enzyme 2, Hydrolases; Acting on peptide bonds (peptidases); Metallocarboxypeptidases
#2: Protein Sodium-dependent neutral amino acid transporter B(0)AT1 / Solute carrier family 6 member 19 / System B(0) neutral amino acid transporter AT1


Mass: 73087.086 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SLC6A19, B0AT1 / Production host: Homo sapiens (human) / References: UniProt: Q695T7
#3: Chemical ChemComp-TRP / TRYPTOPHAN


Type: L-peptide linking / Mass: 204.225 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C11H12N2O2
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: Structure of the ACE2-B0AT1 bound with tryptophan / 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: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: OTHER
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 5000 nm / Nominal defocus min: 1200 nm
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

EM software
IDNameCategory
1cryoSPARCparticle selection
13cryoSPARC3D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.24 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 140545 / Symmetry type: POINT

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