PDB
9QD4
Resolution
3.1 Å
Released
Feb. 11, 2026
Receptor
NTS1
Class
A
Species
Rattus norvegicus
Ligand
cp30a
Function
Agonist
Reference
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Ligand Amino Acid Generic Number Segment Interaction Type
cp30a N127 2.64x63 TM2 polar (hydrogen bond with backbone)
cp30a N127 2.64x63 TM2 Van der Waals
cp30a F128 2.65x64 TM2 polar (hydrogen bond with backbone)
cp30a F128 2.65x64 TM2 aromatic (edge-to-face)
cp30a F128 2.65x64 TM2 Van der Waals
cp30a I129 2.66x65 TM2 Van der Waals
cp30a H132 ECL1 polar (hydrogen bond with backbone)
cp30a H132 ECL1 Van der Waals
cp30a H133 ECL1 Van der Waals
cp30a H133 ECL1 polar (hydrogen bond with backbone)
cp30a Y146 3.29x29 TM3 polar (hydrogen bond)
cp30a Y146 3.29x29 TM3 polar (hydrogen bond)
cp30a M204 4.60x61 TM4 Van der Waals
cp30a M208 4.64x65 TM4 polar (hydrogen bond)
cp30a L213 ECL2 Van der Waals
cp30a V224 ECL2 polar (hydrogen bond)
cp30a C225 45.50x50 ECL2 Van der Waals
cp30a C225 45.50x50 ECL2 polar (hydrogen bond with backbone)
cp30a T226 45.51x51 ECL2 Van der Waals
cp30a P227 45.52x52 ECL2 Van der Waals
cp30a L234 5.35x36 TM5 Van der Waals
cp30a I238 5.39x40 TM5 hydrophobic
cp30a I238 5.39x40 TM5 Van der Waals
cp30a R327 6.54x54 TM6 polar (charge-assisted hydrogen bond)
cp30a R328 6.55x55 TM6 polar (charge-assisted hydrogen bond)
cp30a F331 6.58x58 TM6 hydrophobic
cp30a F331 6.58x58 TM6 Van der Waals
cp30a Y347 7.31x30 TM7 polar (hydrogen bond)
cp30a Y347 7.31x30 TM7 polar (hydrogen bond)
cp30a H348 7.32x31 TM7 polar (hydrogen bond with backbone)
cp30a H348 7.32x31 TM7 Van der Waals
cp30a Y351 7.35x34 TM7 aromatic (face-to-edge)
cp30a Y351 7.35x34 TM7 polar (hydrogen bond)
cp30a M352 7.36x35 TM7 Van der Waals

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

GPCRdb(A)
GPCRdb(A)
NTS1 receptor
TM2
2x63 2.64x63 N127
2x64 2.65x64 F128
2x65 2.66x65 I129
TM3
3x29 3.29x29 Y146
TM4
4x61 4.60x61 M204
4x65 4.64x65 M208
ECL2
45x50 45.50x50 C225
45x51 45.51x51 T226
45x52 45.52x52 P227
TM5
5x36 5.35x36 V234
5x40 5.39x40 I238
TM6
6x54 6.54x54 R327
6x55 6.55x55 R328
6x58 6.58x58 F331
TM7
7x30 7.31x30 Y347
7x31 7.32x31 H348
7x34 7.35x34 Y351
7x35 7.36x35 M352