PDB
9LFA
Resolution
3.5 Å
Released
May 27, 2026
Receptor
B1
Class
A
Species
Homo sapiens
Ligand
CHEMBL1254945
Function
Antagonist
Reference
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Ligand Amino Acid Generic Number Segment Interaction Type
CHEMBL1254945 W33 1.28x28 TM1 hydrophobic
CHEMBL1254945 F92 2.59x59 TM2 hydrophobic
CHEMBL1254945 W93 2.60x60 TM2 aromatic (face-to-face)
CHEMBL1254945 F101 ECL1 hydrophobic
CHEMBL1254945 W103 23.50x50 ECL1 hydrophobic
CHEMBL1254945 I113 3.28x28 TM3 hydrophobic
CHEMBL1254945 I117 3.32x32 TM3 hydrophobic
CHEMBL1254945 L184 ECL2 hydrophobic
CHEMBL1254945 N298 7.39x38 TM7 polar (hydrogen bond)
CHEMBL1254945 N298 7.39x38 TM7 Van der Waals
CHEMBL1254945 F302 7.43x42 TM7 hydrophobic

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

GPCRdb(A)
GPCRdb(A)
B1 receptor
TM1
1x28 1.28x28 W33
TM2
2x59 2.59x59 F92
2x60 2.60x60 W93
ECL1
23x50 23.50x50 W103
TM3
3x28 3.28x28 I113
3x32 3.32x32 I117
TM7
7x38 7.39x38 N298
7x42 7.43x42 F302