PDB
9QC1
Resolution
3.1 Å
Released
Feb. 11, 2026
Receptor
NTS1
Class
A
Species
Rattus norvegicus
Ligand
cp28a
Function
Agonist
Reference
—

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Ligand Amino Acid Generic Number Segment Interaction Type
cp28a F128 2.65x64 TM2 polar (hydrogen bond with backbone)
cp28a F128 2.65x64 TM2 Van der Waals
cp28a I129 2.66x65 TM2 Van der Waals
cp28a H132 ECL1 polar (hydrogen bond with backbone)
cp28a H132 ECL1 Van der Waals
cp28a Y146 3.29x29 TM3 polar (hydrogen bond)
cp28a M204 4.60x61 TM4 Van der Waals
cp28a M208 4.64x65 TM4 polar (hydrogen bond)
cp28a V224 ECL2 hydrophobic
cp28a V224 ECL2 Van der Waals
cp28a T226 45.51x51 ECL2 Van der Waals
cp28a P227 45.52x52 ECL2 Van der Waals
cp28a L234 5.35x36 TM5 Van der Waals
cp28a I238 5.39x40 TM5 Van der Waals
cp28a R327 6.54x54 TM6 polar (charge-assisted hydrogen bond)
cp28a R328 6.55x55 TM6 polar (charge-assisted hydrogen bond)
cp28a F331 6.58x58 TM6 polar (hydrogen bond)
cp28a Y347 7.31x30 TM7 polar (hydrogen bond)
cp28a H348 7.32x31 TM7 polar (hydrogen bond with backbone)
cp28a H348 7.32x31 TM7 Van der Waals
cp28a Y351 7.35x34 TM7 polar (hydrogen bond)
cp28a 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
2x64 2.65x64 F128
2x65 2.66x65 I129
TM3
3x29 3.29x29 Y146
TM4
4x61 4.60x61 M204
4x65 4.64x65 M208
ECL2
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