PDB
9LFA
Resolution
3.5 Å
Released
May 27, 2026
Receptor
B1
Class
A
Species
Homo sapiens
Ligand
Function
CHEMBL1254945
Antagonist
Reference
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Ligand Amino Acid Generic Number Segment Interaction Type
CHEMBL1254945 P30 N-term Van der Waals
CHEMBL1254945 W33 1.28x28 TM1 Van der Waals
CHEMBL1254945 G89 2.56x56 TM2 Van der Waals
CHEMBL1254945 F92 2.59x59 TM2 hydrophobic
CHEMBL1254945 W93 2.60x60 TM2 hydrophobic
CHEMBL1254945 N96 2.63x63 TM2 Van der Waals
CHEMBL1254945 F101 ECL1 aromatic (edge-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 R176 ECL2 aromatic (pi-cation)
CHEMBL1254945 L184 ECL2 hydrophobic
CHEMBL1254945 D291 7.32x31 TM7 Van der Waals
CHEMBL1254945 Q295 7.36x35 TM7 Van der Waals
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
2x56 2.56x56 G89
2x59 2.59x59 F92
2x60 2.60x60 W93
2x63 2.63x63 N96
ECL1
23x50 23.50x50 W103
TM3
3x28 3.28x28 I113
3x32 3.32x32 I117
TM7
7x31 7.32x31 D291
7x35 7.36x35 Q295
7x38 7.39x38 N298
7x42 7.43x42 F302