PDB
9LL9
Resolution
2.8 Å
Released
Jan. 14, 2026
Receptor
5-HT2A
Class
A
Species
Homo sapiens
Ligand
(R)-DOI
Function
Agonist
Reference
—

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Ligand Amino Acid Generic Number Segment Interaction Type
(R)-DOI D155 3.32x32 TM3 polar (charge-assisted hydrogen bond)
(R)-DOI V156 3.33x33 TM3 hydrophobic
(R)-DOI V156 3.33x33 TM3 Van der Waals
(R)-DOI S159 3.36x36 TM3 Van der Waals
(R)-DOI L229 45.52x52 ECL2 Van der Waals
(R)-DOI V235 5.39x40 TM5 Van der Waals
(R)-DOI S239 5.43x44 TM5 Van der Waals
(R)-DOI W336 6.48x48 TM6 Van der Waals
(R)-DOI F339 6.51x51 TM6 Van der Waals
(R)-DOI F339 6.51x51 TM6 aromatic (edge-to-face)
(R)-DOI F340 6.52x52 TM6 hydrophobic
(R)-DOI F340 6.52x52 TM6 Van der Waals
(R)-DOI N343 6.55x55 TM6 polar (hydrogen bond)
(R)-DOI N343 6.55x55 TM6 Van der Waals

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

GPCRdb(A)
GPCRdb(A)
5-HT2A receptor
TM3
3x32 3.32x32 D155
3x33 3.33x33 V156
3x36 3.36x36 S159
ECL2
45x52 45.52x52 L229
TM5
5x40 5.39x40 V235
5x44 5.43x44 S239
TM6
6x48 6.48x48 W336
6x51 6.51x51 F339
6x52 6.52x52 F340
6x55 6.55x55 N343