6WHA

HTR2A bound to 25-CN-NBOH in complex with a mini-Galpha-q protein, beta/gamma subunits and an active-state stabilizing single-chain variable fragment (scFv16) obtained by cryo-electron microscopy (cryoEM)

• PDB DOI: https://doi.org/10.2210/pdb6WHA/pdb
• EM Map EMD-21669: EMDB EMDataResource

• Classification: MEMBRANE PROTEIN/IMMUNE SYSTEM
• Organism(s): Escherichia coli, Homo sapiens
• Expression System: Spodoptera frugiperda
• Mutation(s): No 
• Membrane Protein: Yes  OPMPDBTMMemProtMDmpstruc


• Deposited: 2020-04-07 Released: 2020-09-23 
• Deposition Author(s): Skiniotis, G., Roth, B., Kim, K., Panova, O.
• Funding Organization(s): National Institutes of Health/National Institute on Drug Abuse (NIH/NIDA), National Institutes of Health/National Institute of Mental Health (NIH/NIMH)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.36 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Structure of a Hallucinogen-Activated Gq-Coupled 5-HT2A Serotonin Receptor

Kim, K., Che, T., Panova, O., Shoichet, B.K., Skiniotis, G., Roth, B.L.

(2020) Cell 182: 1574-1588

• DOI: https://doi.org/10.1016/j.cell.2020.08.024

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 5-mer - A1B1C1D1E1 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 160.51 kDa 
• Atom Count: 7,888 
• Modelled Residue Count: 1,074 
• Deposited Residue Count: 1,439 
• Unique protein chains: 5

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Soluble cytochrome b562,5-hydroxytryptamine receptor 2A chimera	A	497	Escherichia coli, Homo sapiens This entity is chimeric	Mutation(s): 0  Gene Names: cybC, HTR2A, HTR2 Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for P28223 (Homo sapiens) Explore P28223  Go to UniProtKB:  P28223
PHAROS:  P28223 GTEx:  ENSG00000102468
Find proteins for P0ABE7 (Escherichia coli) Explore P0ABE7  Go to UniProtKB:  P0ABE7
UniProt Groups	P28223P0ABE7

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
G subunit q (Gi2-mini-Gq chimeric)	B	246	Homo sapiens	Mutation(s): 0

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1	C	358	Homo sapiens	Mutation(s): 0  Gene Names: GNB1
UniProt & NIH Common Fund Data Resources
Find proteins for P62873 (Homo sapiens) Explore P62873  Go to UniProtKB:  P62873
PHAROS:  P62873 GTEx:  ENSG00000078369

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2	D	71	Homo sapiens	Mutation(s): 0  Gene Names: GNG2 Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for P59768 (Homo sapiens) Explore P59768  Go to UniProtKB:  P59768
PHAROS:  P59768 GTEx:  ENSG00000186469

Entity ID: 5
Molecule	Chains	Sequence Length	Organism	Details	Image
single Fab chain (svFv16)	E	267	Homo sapiens	Mutation(s): 0

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
U0G (Subject of Investigation/LOI)	F [auth A]	4-(2-{[(2-hydroxyphenyl)methyl]amino}ethyl)-2,5-dimethoxybenzonitrile C18 H20 N2 O3 VWEDZTZAXHMZIL-UHFFFAOYSA-N

Binding Affinity Annotations
ID	Source	Binding Affinity
U0G	BindingDB:  6WHA	Ki: min: 2.71, max: 5.79 (nM) from 2 assay(s)
		EC50: min: 1.9, max: 137 (nM) from 5 assay(s)

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.36 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2020-09-23 
Deposition Author(s): Skiniotis, G., Roth, B., Kim, K., Panova, O.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Institute on Drug Abuse (NIH/NIDA)	United States	R37 DA045657
National Institutes of Health/National Institute of Mental Health (NIH/NIMH)	United States	RO1 MH112205

Revision History  

• Version 1.0: 2020-09-23
  Type: Initial release
  
• Version 1.1: 2024-11-20
  Changes: Data collection, Database references, Structure summary