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Neurotensin receptor

Neurotensin receptors are transmembrane receptors that bind the neurotransmitter neurotensin. Two of the receptors encoded by the NTSR1 and NTSR2 genes contain seven transmembrane helices and are G protein coupled. Numerous crystal structures have been reported for the neurotensin receptor 1 (NTS1). The third receptor has a single transmembrane domain and is encoded by the SORT1 gene.

Ligands
Agonists ;Peptide • Beta-lactotensin (NTS2) • JMV-449 • NeurotensinNeuromedin N (NTS1 selective) • PD-149,163 (NTS1 selective, reduced amide bond 8-13 fragment of neurotensin) ;Non-peptide • NTS1 full agonist SRI-9829 Antagonists Levocabastine (NTS2 selective, also H1 histamine antagonist) • SR-48692 (NTS1 selective) • SR-142948 (unselective, CAS# 184162-64-9) == Biophysical Investigation ==
Biophysical Investigation
Unusually for GPCRs, NTS1 can be expressed in an active form in the bacteria E. coli. It can be purified and analysed in vitro and has been analysed by a number of biophysical techniques such as surface plasmon resonance, FRET and cryo-electron microscopy. Furthermore, high-resolution crystal structures of NTS1 have been determined in complex with the peptide full agonist NT8-13, the non-peptide full agonist SRI-9829, the partial agonist RTI-3a, and the antagonists / inverse agonists SR-48692 and SR-142948, as well as in the ligand-free apo state == References ==
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