9VU1: HTRPA1

Structure of hTRPA1 complexed with LIQA. Determined by electron microscopy at 2.59 Å resolution. Released 15 Jul 2026.

Method

Electron microscopy

Resolution

2.59 Å

Organism

Homo sapiens

Chains

4

Atoms

19,292

Mol. weight

512.84 kDa

Ligands

A1ETS

Released

15 Jul 2026

Explore 9VU1 in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

9VU1 contains 164 α-helices and 24 β-strands across 4 chains. Residue ranges use author residue numbering, as in the PDB file, from PDBe. To see them in 3D, choose the Cartoon representation with Secondary structure coloring: helices, sheets and coils get different colors.

Chain A: 40 helices, 6 β-strands

Molecules and chains

>9VU1_1 Transient receptor potential cation channel subfamily A member 1 (chains A, B, C, D)
MKRSLRKMWRPGEKKEPQGVVYEDVPDDTEDFKESLKVVFEGSAYGLQNFNKQKKLKRCD
DMDTFFLHYAAAEGQIELMEKITRDSSLEVLHEMDDYGNTPLHCAVEKNQIESVKFLLSR
GANPNLRNFNMMAPLHIAVQGMNNEVMKVLLEHRTIDVNLEGENGNTAVIIACTTNNSEA
LQILLKKGAKPCKSNKWGCFPIHQAAFSGSKECMEIILRFGEEHGYSRQLHINFMNNGKA
TPLHLAVQNGDLEMIKMCLDNGAQIDPVEKGRCTAIHFAATQGATEIVKLMISSYSGSVD
IVNTTDGCHETMLHRASLFDHHELADYLISVGADINKIDSEGRSPLILATASASWNIVNL
LLSKGAQVDIKDNFGRNFLHLTVQQPYGLKNLRPEFMQMQQIKELVMDEDNDGCTPLHYA
CRQGGPGSVNNLLGFNVSIHSKSKDKKSPLHFAASYGRINTCQRLLQDISDTRLLNEGDL
HGMTPLHLAAKNGHDKVVQLLLKKGALFLSDHNGWTALHHASMGGYTQTMKVILDTNLKC
TDRLDEDGNTALHFAAREGHAKAVALLLSHNADIVLNKQQASFLHLALHNKRKEVVLTII
RSKRWDECLKIFSHNSPGNKCPITEMIEYLPECMKVLLDFCMLHSTEDKSCRDYYIEYNF
KYLQCPLEFTKKTPTQDVIYEPLTALNAMVQNNRIELLNHPVCKEYLLMKWLAYGFRAHM
MNLGSYCLGLIPMTILVVNIKPGMAFNSTGIINETSDHSEILDTTNSYLIKTCMILVFLS
SIFGYCKEAGQIFQQKRNYFMDISNVLEWIIYTTGIIFVLPLFVEIPAHLQWQCGAIAVY
FYWMNFLLYLQRFENCGIFIVMLEVILKTLLRSTVVFIFLLLAFGLSFYILLNLQDPFSS
PLLSIIQTFSMMLGDINYRESFLEPYLRNELAHPVLSFAQLVSFTIFVPIVLMNLLIGLA
VGDIAEVQKHASLKRIAMQVELHTSLEKKLPLWFLRKVDQKSTIVYPNKPRSGGMLFHIF
CFLFCTGEIRQEIPNADKSLEMEILKQKYRLKDLTFLLEKQHELIKLIIQKMEIISETED
DDSHCSFQDRFKKEQMEQRNSRWNTVLRAVKAKTHHLEP

Ligands and cofactors

Primary citation

Structural insights into TRPA1 and TRPV1 modulation by flavonoid glycosides from licorice for cough relief. Yi, Y., Duan, G., Dai, Z. et al. Phytomedicine (2026) 159:158419-158419. DOI 10.1016/j.phymed.2026.158419 · PubMed

Related structures

Other PDB entries of the same protein (UniProt O75762 (AlphaFold model), which also has an AlphaFold model), best resolution first:

• 6HC8 1.9 Å, Factor Inhibiting HIF (FIH) in complex with zinc, NOG and TRPA1 (313-339)
• 6V9V 2.6 Å, Structure of TRPA1 modified by Bodipy-iodoacetamide with bound calcium, LMNG
• 7OR0 2.64 Å, Cryo-EM structure of the human TRPA1 ion channel in complex with the antagonist 3-60,…
• 7OR1 2.64 Å, Cryo-EM structure of the human TRPA1 ion channel in complex with the antagonist 3-60,…
• 9MOE 2.7 Å, Preclinical and clinical evaluation of a novel TRPA1 antagonist LY3526318
• 6PQQ 2.81 Å, Cryo-EM structure of human TRPA1 C621S mutant in the apo state
• 6PQO 2.88 Å, Cryo-EM structure of the human TRPA1 ion channel in complex with the covalent agonist…
• 6X2J 3.0 Å, Structure of human TRPA1 in complex with agonist GNE551
• 7JUP 3.05 Å, Structure of human TRPA1 in complex with antagonist compound 21
• 6PQP 3.06 Å, Cryo-EM structure of the human TRPA1 ion channel in complex with the covalent agonist BITC
• 6V9W 3.1 Å, Structure of TRPA1 (ligand-free) with bound calcium, LMNG
• 9M8S 3.1 Å, Cryo-EM structure of the human TRPA1 ion channel in ligand-free state.

Browse structure collections

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