8T4M

Closed human HCN1 F186C S264C bound to cAMP, reconstituted in LMNG + SPL

• PDB DOI: https://doi.org/10.2210/pdb8T4M/pdb
• EM Map EMD-41036: EMDB EMDataResource

• Classification: TRANSPORT PROTEIN
• Organism(s): Homo sapiens
• Expression System: Homo sapiens
• Mutation(s): Yes 
• Membrane Protein: Yes  PDBTM


• Deposited: 2023-06-09 Released: 2024-06-12 
• Deposition Author(s): Burtscher, V., Mount, J., Cowgill, J., Chang, Y., Bickel, K., Yuan, P., Chanda, B.
• Funding Organization(s): National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS), National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.16 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Structural Basis for Hyperpolarization-dependent Opening of the Human HCN1 Channel

Burtscher, V., Mount, J., Cowgill, J., Chang, Y., Bickel, K., Yuan, P., Chanda, B.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C4  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content

• Total Structure Weight: 396.8 kDa 
• Atom Count: 17,000 
• Modelled Residue Count: 2,132 
• Deposited Residue Count: 3,560 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 1	A [auth D], B [auth C], C [auth B], D [auth A]	890	Homo sapiens	Mutation(s): 2  Gene Names: HCN1, BCNG1 Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for O60741 (Homo sapiens) Explore O60741  Go to UniProtKB:  O60741
PHAROS:  O60741 GTEx:  ENSG00000164588

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CMP (Subject of Investigation/LOI)	E [auth D], F [auth C], G [auth B], H [auth A]	ADENOSINE-3',5'-CYCLIC-MONOPHOSPHATE C10 H12 N5 O6 P IVOMOUWHDPKRLL-KQYNXXCUSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.16 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
RECONSTRUCTION	cryoSPARC	4.1
MODEL REFINEMENT	PHENIX	1.2

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2024-06-12 
Deposition Author(s): Burtscher, V., Mount, J., Cowgill, J., Chang, Y., Bickel, K., Yuan, P., Chanda, B.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)	United States	NS101723
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	GM143440

Revision History  

• Version 1.0: 2024-06-12
  Type: Initial release