PDB
Resolution
3.6 Å
Released
June 3, 2026
Receptor
Class
A
Species
Homo sapiens
Ligands
SPM-242
CHEMBL5779183
Function
Antagonist
Allosteric antagonist
Reference
—
SPM-242 CHEMBL5779183

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Ligand Amino Acid Generic Number Segment Interaction Type
SPM-242 Y22 N-term Van der Waals
SPM-242 Y22 N-term polar (hydrogen bond)
SPM-242 T42 1.35x35 TM1 Van der Waals
CHEMBL5779183 V94 2.59x59 TM2 hydrophobic
SPM-242 N95 2.60x60 TM2 polar (hydrogen bond)
SPM-242 I96 2.61x61 TM2 Van der Waals
SPM-242 I96 2.61x61 TM2 hydrophobic
CHEMBL5779183 M98 2.63x63 TM2 polar (hydrogen bond)
SPM-242 S99 2.64x64 TM2 polar (hydrogen bond)
SPM-242 G100 23.47x47 ECL1 polar (hydrogen bond with backbone)
SPM-242 G100 23.47x47 ECL1 Van der Waals
SPM-242 T103 23.50x50 ECL1 Van der Waals
SPM-242 T103 23.50x50 ECL1 polar (hydrogen bond)
CHEMBL5779183 L113 3.27x27 TM3 Van der Waals
CHEMBL5779183 L113 3.27x27 TM3 hydrophobic
SPM-242 R114 3.28x28 TM3 polar (charge-assisted hydrogen bond)
CHEMBL5779183 R114 3.28x28 TM3 Van der Waals
SPM-242 E115 3.29x29 TM3 polar (charge-assisted hydrogen bond)
CHEMBL5779183 G116 3.30x30 TM3 Van der Waals
CHEMBL5779183 S117 3.31x31 TM3 Van der Waals
CHEMBL5779183 S117 3.31x31 TM3 polar (hydrogen bond)
CHEMBL5779183 V120 3.34x34 TM3 Van der Waals
CHEMBL5779183 V120 3.34x34 TM3 hydrophobic
CHEMBL5779183 A121 3.35x35 TM3 Van der Waals
CHEMBL5779183 F166 4.54x54 TM4 aromatic (edge-to-face)
CHEMBL5779183 F166 4.54x54 TM4 Van der Waals
CHEMBL5779183 A170 4.58x58 TM4 Van der Waals
CHEMBL5779183 A170 4.58x58 TM4 hydrophobic
SPM-242 Q281 7.36x35 TM7 Van der Waals
SPM-242 W282 7.37x36 TM7 Van der Waals
SPM-242 W282 7.37x36 TM7 polar (hydrogen bond)
SPM-242 W282 7.37x36 TM7 aromatic (face-to-edge)
SPM-242 I284 7.39x38 TM7 Van der Waals

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

GPCRdb(A)
GPCRdb(A)
S1P3 receptor
TM1
1x35 1.35x35 T42
TM2
2x59 2.59x59 V94
2x60 2.60x60 N95
2x61 2.61x61 I96
2x63 2.63x63 M98
2x64 2.64x64 S99
ECL1
23x47 23.47x47 G100
23x50 23.50x50 T103
TM3
3x27 3.27x27 L113
3x28 3.28x28 R114
3x29 3.29x29 E115
3x30 3.30x30 G116
3x31 3.31x31 S117
3x34 3.34x34 V120
3x35 3.35x35 A121
TM4
4x54 4.54x54 F166
4x58 4.58x58 A170
TM7
7x35 7.36x35 Q281
7x36 7.37x36 W282
7x38 7.39x38 I284