PDB
9W1J
Resolution
3.0 Å
Released
June 17, 2026
Receptor
NK2
Class
A
Species
Homo sapiens
Ligand
Function
neurokinin A (Human)
Agonist
Reference
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Ligand Amino Acid Generic Number Segment Interaction Type
neurokinin A (Human) T24 N-term Van der Waals
neurokinin A (Human) A25 N-term polar (hydrogen bond with backbone)
neurokinin A (Human) F26 N-term hydrophobic
neurokinin A (Human) N86 2.57x57 TM2 polar (hydrogen bond)
neurokinin A (Human) N90 2.61x61 TM2 Van der Waals
neurokinin A (Human) Y93 2.64x64 TM2 Van der Waals
neurokinin A (Human) A94 2.65x65 TM2 hydrophobic
neurokinin A (Human) N97 ECL1 polar (hydrogen bond)
neurokinin A (Human) N97 ECL1 polar (hydrogen bond)
neurokinin A (Human) N97 ECL1 hydrophobic
neurokinin A (Human) Q109 3.28x28 TM3 Van der Waals
neurokinin A (Human) I114 3.33x33 TM3 hydrophobic
neurokinin A (Human) M117 3.36x36 TM3 hydrophobic
neurokinin A (Human) Q166 4.60x61 TM4 Van der Waals
neurokinin A (Human) D175 ECL2 Van der Waals
neurokinin A (Human) Q176 ECL2 polar (hydrogen bond)
neurokinin A (Human) A178 ECL2 Van der Waals
neurokinin A (Human) K180 ECL2 polar (charge-charge)
neurokinin A (Human) K180 ECL2 hydrophobic
neurokinin A (Human) C181 45.50x50 ECL2 hydrophobic
neurokinin A (Human) V182 45.51x51 ECL2 Van der Waals
neurokinin A (Human) H198 5.39x40 TM5 Van der Waals
neurokinin A (Human) Y266 6.51x51 TM6 Van der Waals
neurokinin A (Human) Y269 6.54x54 TM6 Van der Waals
neurokinin A (Human) F270 6.55x55 TM6 hydrophobic
neurokinin A (Human) Y280 ECL3 polar (hydrogen bond with backbone)
neurokinin A (Human) I285 7.31x30 TM7 hydrophobic
neurokinin A (Human) Q286 7.32x31 TM7 hydrophobic
neurokinin A (Human) Y289 7.35x34 TM7 hydrophobic
neurokinin A (Human) Y289 7.35x34 TM7 polar (hydrogen bond)
neurokinin A (Human) F293 7.39x38 TM7 Van der Waals

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

GPCRdb(A)
GPCRdb(A)
NK2 receptor
TM2
2x57 2.57x57 N86
2x61 2.61x61 N90
2x64 2.64x64 Y93
2x65 2.65x65 A94
TM3
3x28 3.28x28 Q109
3x33 3.33x33 I114
3x36 3.36x36 M117
TM4
4x61 4.60x61 Q166
ECL2
45x50 45.50x50 C181
45x51 45.51x51 V182
TM5
5x40 5.39x40 H198
TM6
6x51 6.51x51 Y266
6x54 6.54x54 Y269
6x55 6.55x55 F270
TM7
7x30 7.31x30 I285
7x31 7.32x31 Q286
7x34 7.35x34 Y289
7x38 7.39x38 F293