PDB
10KT
Resolution
2.6 Å
Released
May 20, 2026
Receptor
A2A
Class
A
Species
Homo sapiens
Ligand
Function
Compound 50
Antagonist
Reference
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Ligand Amino Acid Generic Number Segment Interaction Type
Compound 50 A63 2.61x60 TM2 Van der Waals
Compound 50 I66 2.64x63 TM2 hydrophobic
Compound 50 S67 2.65x64 TM2 Van der Waals
Compound 50 V84 3.32x32 TM3 hydrophobic
Compound 50 L85 3.33x33 TM3 hydrophobic
Compound 50 L167 45.51x51 ECL2 Van der Waals
Compound 50 F168 45.52x52 ECL2 hydrophobic
Compound 50 F168 45.52x52 ECL2 aromatic (face-to-face)
Compound 50 E169 ECL2 polar (hydrogen bond)
Compound 50 M177 5.38x40 TM5 Van der Waals
Compound 50 W246 6.48x48 TM6 hydrophobic
Compound 50 L249 6.51x51 TM6 hydrophobic
Compound 50 H250 6.52x52 TM6 Van der Waals
Compound 50 N253 6.55x55 TM6 polar (hydrogen bond)
Compound 50 N253 6.55x55 TM6 polar (hydrogen bond)
Compound 50 H264 ECL3 Van der Waals
Compound 50 L267 7.32x31 TM7 Van der Waals
Compound 50 M270 7.35x34 TM7 Van der Waals
Compound 50 Y271 7.36x35 TM7 hydrophobic
Compound 50 I274 7.39x38 TM7 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
2x60 2.61x60 A63
2x63 2.64x63 I66
2x64 2.65x64 S67
TM3
3x32 3.32x32 V84
3x33 3.33x33 L85
ECL2
45x51 45.51x51 L167
45x52 45.52x52 F168
TM5
5x40 5.38x40 M177
TM6
6x48 6.48x48 W246
6x51 6.51x51 L249
6x52 6.52x52 H250
6x55 6.55x55 N253
TM7
7x31 7.32x31 L267
7x34 7.35x34 M270
7x35 7.36x35 Y271
7x38 7.39x38 I274