PDB
7INY
Resolution
2.4 Å
Released
May 20, 2026
Receptor
A2A
Class
A
Species
Homo sapiens
Ligands
FU2-59
theophylline
Function
Unknown
Antagonist
Reference
—
FU2-59 theophylline

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Ligand Amino Acid Generic Number Segment Interaction Type
FU2-59 N42 2.40x40 TM2 polar (hydrogen bond)
FU2-59 N42 2.40x40 TM2 Van der Waals
FU2-59 I98 3.46x46 TM3 Van der Waals
FU2-59 R102 3.50x50 TM3 Van der Waals
theophylline F168 45.52x52 ECL2 aromatic (face-to-face)
FU2-59 K227 6.29x29 TM6 Van der Waals
FU2-59 E228 6.30x30 TM6 Van der Waals
FU2-59 A231 6.33x33 TM6 Van der Waals
FU2-59 A231 6.33x33 TM6 hydrophobic
FU2-59 S234 6.36x36 TM6 Van der Waals
FU2-59 A235 6.37x37 TM6 polar (hydrogen bond with backbone)
FU2-59 A235 6.37x37 TM6 Van der Waals
theophylline L249 6.51x51 TM6 hydrophobic
theophylline N253 6.55x55 TM6 polar (hydrogen bond)
theophylline N253 6.55x55 TM6 polar (hydrogen bond)
theophylline M270 7.35x34 TM7 Van der Waals
theophylline I274 7.39x38 TM7 hydrophobic
theophylline I274 7.39x38 TM7 Van der Waals
FU2-59 Y288 7.53x53 TM7 Van der Waals
FU2-59 I292 8.47x47 H8 hydrophobic

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Snake plot — Download: PNG | SVG
ICL1 S N L Q ICL1ECL1 F C A ECL1ICL2 P L R Y N G L V ICL2ECL2 W N N C G Q P K E G K N H S Q G C G E G Q V A C L F E D V V ECL2ICL3 Q P L P G ICL3ECL3 P D C S H A ECL3C-term K A A G T S A R V L A A H G S D G E Q V S L R L N G H P P G V W A N G S A P H P E R R P N G Y A L G L V S G G S A Q E S Q G N T G L P D V E L L S H E L K G V C P E P P G L D D P L A Q D G A G V S C-term M P I M G S S V Y I T V E L A I A V L A I L G N V L V C W A V W L N N V T N Y F V V S L A A A D I A V G V L A I P F A I T I S T G A C H G C L F I A C F V L V L T Q S S I F S L L A I A I D R Y I A I R I T G T R A K G I I A I C W V L S F A I G L T P M L G P M N Y M V Y F N F F A C V L V P L L L M L G V Y L R I F L A A R R Q L K Q M E S E R A R S T L Q K E V H A A K S L A I I V G L F A L C W L P L H I I N C F T F F C P L W L M Y L A I V L S H T N S V V N P F I Y A Y R I R E F R K H V L P F F R Q T I I R S R Q Q E
Helix box plot — Download: PNG | SVG V N G L I A L V A I A L E V T I Y V S S 1 V S L A A A D I A V G L V A I P F A I T I 2 A L L S F I S S Q T L V L V F C A I F L 3 A K G I I A I C W V L S F A I G L T P M 4 Y V G L M L L L P V L V C A F F N F Y V M Y 5 A I I V G L F A L C W L P L H I I N C F 6 F P N V V S N T H S L V I A L Y M L W 7

GPCRdb(A)
GPCRdb(A)
A2A receptor
TM2
2x40 2.40x40 N42
TM3
3x46 3.46x46 I98
3x50 3.50x50 R102
ECL2
45x52 45.52x52 F168
TM6
6x29 6.29x29 K227
6x30 6.30x30 E228
6x33 6.33x33 A231
6x36 6.36x36 S234
6x37 6.37x37 L235
6x51 6.51x51 L249
6x55 6.55x55 N253
TM7
7x34 7.35x34 M270
7x38 7.39x38 I274
7x53 7.53x53 Y288
H8
8x47 8.47x47 I292