8T4Y

Human HCN1 F186C S264C C309A bound to cAMP, reconstituted in LMNG + SPL

• PDB DOI: https://doi.org/10.2210/pdb8T4Y/pdb
• EM Map EMD-41040: EMDB EMDataResource

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


• Deposited: 2023-06-12 Released: 2024-06-19 
• 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)

---

Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.58 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: 396.68 kDa 
• Atom Count: 13,348 
• Modelled Residue Count: 2,004 
• 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, B [auth D], C, D [auth B]	890	Homo sapiens	Mutation(s): 3  Gene Names: HCN1, BCNG1
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 A], F [auth D], G [auth C], H [auth B]	ADENOSINE-3',5'-CYCLIC-MONOPHOSPHATE C10 H12 N5 O6 P IVOMOUWHDPKRLL-KQYNXXCUSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.58 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX	1.20
RECONSTRUCTION	cryoSPARC	4.4

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2024-06-19 
Deposition Author(s): Burtscher, V., Mount, J., Cowgill, J., Chang, Y., Bickel, K., Yuan, P., Chanda, B.

---

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: 2024-06-19
  Type: Initial release