Structure information

HCA1 receptor

PROTEIN CLASS

Class A (Rhodopsin)

PDB CODE

9KT9

SPECIES

Homo sapiens

RESOLUTION

2.700

PREFERRED CHAIN

R

REFERENCE

10.1021/ACS.JMEDCHEM.4C02567

PUBLICATION DATE

Dec. 10, 2025

NGL is a WebGL based 3D viewer powered by MMTF.

Download PDB file

Ligand Interaction Browser

Download list in excel
Ligand Amino Acid Generic Number Segment Interaction Type
Ligand Amino Acid Generic Number Segment Interaction Type
3,5-dihydroxybenzoic acid R71 2.60x60 TM2 polar (charge-assisted hydrogen bond)
3,5-dihydroxybenzoic acid Y75 2.64x64 TM2 polar (hydrogen bond)
3,5-dihydroxybenzoic acid Y75 2.64x64 TM2 Van der Waals
3,5-dihydroxybenzoic acid L95 3.32x32 TM3 hydrophobic
3,5-dihydroxybenzoic acid L95 3.32x32 TM3 Van der Waals
3,5-dihydroxybenzoic acid E166 45.51x51 ECL2 Van der Waals
3,5-dihydroxybenzoic acid S167 45.52x52 ECL2 polar (hydrogen bond with backbone)
3,5-dihydroxybenzoic acid S167 45.52x52 ECL2 Van der Waals
3,5-dihydroxybenzoic acid F168 ECL2 polar (hydrogen bond with backbone)
3,5-dihydroxybenzoic acid F168 ECL2 Van der Waals
3,5-dihydroxybenzoic acid L264 7.39x38 TM7 Van der Waals
3,5-dihydroxybenzoic acid L264 7.39x38 TM7 hydrophobic
3,5-dihydroxybenzoic acid Y268 7.43x42 TM7 Van der Waals
3,5-dihydroxybenzoic acid Y268 7.43x42 TM7 polar (hydrogen bond)

Ligands

3,5-dihydroxybenzoic acid

3D interaction viewer Download PDB file

NGL is a WebGL based 3D viewer powered by MMTF.


Residue Diagrams

G N G L A G L V F A V I L L P P M V Q S 1 F N L A V A D F L L M I C L P F R T D Y 2 V T L F V I S G A R N M A L T F L G V R 3 A A G I V C T L W A L V I L G T V Y L L 4 S C F L I I G L P M F F E L Q F M I D H W 5 M V V A I V F I T C Y L P S V S A R L Y 6 L P D L M S N M Y T F S L T I H L A G 7
Download: PNG | SVG
ICL1 M K T W ICL1ECL1 R R H W A F ECL1ICL2 P H H A V N T I ICL2ECL2 H L C V Q E T A V S C E S F I ECL2ICL3 R Q Q L A ICL3ECL3 V P S S A C ECL3N-term M Y N G S C C R I E G D N-termC-term C S L K P K Q P G H S K T Q R P E E M P I S N L G R R S C I S V A N S F Q S Q S D G Q W D P H I V E W H C-term T I S Q V M P P L L I V A F V L G A L G N G V A L C G F C F H K P S T V Y L F N L A V A D F L L M I C L P F R T D Y Y L R G D I P C R V G L F T L A M N R A G S I V F L T V V A A D R Y F K V V H S T R V A A G I V C T L W A L V I L G T V Y L L L E N M E S A N G W H D I M F Q L E F F M P L G I I L F C S F K I V W S L R R R Q A R M K K A T R F I M V V A I V F I T C Y L P S V S A R L Y F L W T D P S V H G A L H I T L S F T Y M N S M L D P L V Y Y F S S P S Y N K F P K F L K I
Download: PNG | SVG

Residue Table


GPCRdb(A)
GPCRdb(A)
HCA1 receptor
TM2
2x60 2.60x60 R71
2x64 2.64x64 Y75
TM3
3x32 3.32x32 L95
ECL2
45x51 45.51x51 E166
45x52 45.52x52 S167
TM7
7x38 7.39x38 L264
7x42 7.43x42 Y268