SMTL ID : 9l42.1

Cryo-EM structure of human histamine receptor H4R in complex with agonist histamine and Gi proteins

Coordinates

PDB Format Compare

Method

ELECTRON MICROSCOPY 2.90 Å

Oligo State

hetero-1-1-1-1-1-mer

Ligands

1 x CLR: CHOLESTEROL(Non-covalent)

CLR.1: 6 residues within 4Å: Chain A: L.55, I.59, V.133, M.136, V.137, W.140 5 PLIP interactions: 5 interactions with chain A Hydrophobic interactions: A:L.55, A:I.59, A:V.133, A:V.133, A:V.137

1 x HSM: HISTAMINE(Non-covalent)

HSM.2: 8 residues within 4Å: Chain A: D.94, Y.95, C.98, W.248, Y.251, F.276, Q.279, W.280 5 PLIP interactions: 5 interactions with chain A Hydrophobic interactions: A:Y.95 Hydrogen bonds: A:F.276, A:Q.279 pi-Stacking: A:F.276, A:W.280

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Chen, A. et al., Cryo-EM Structures and AlphaFold3 Models of Histamine Receptors Reveal Diverse Ligand Binding and G Protein Bias. Pharmaceuticals (2025)

Release Date

2025-10-22

Peptides

Histamine receptor H4R: A
Guanine nucleotide-binding protein G(i) subunit alpha-1: B
Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1: C
Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2: D
Antibody fragment scFv16: E

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
B

C
C

D
D

E
E

Membrane

We predict this structure to be a membrane protein.
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Histamine receptor H4R

Guanine nucleotide-binding protein G(i) subunit alpha-1

Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1

Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2

Antibody fragment scFv16

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