PPIRE08197

Target Protein Information
Protein_Name Somatostatin receptor type 2
Protein_Sequence MDMADEPLNGSHTWLSIPFDLNGSVVSTNTSNQTEPYYDLTSNAVLTFIYFVVCIIGLCGNTLVIYVILRYAKMKTITNIYILNLAIADELFMLGLPFLAMQVALVHWPFGKAICRVVMTVDGINQFTSIFCLTVMSIDRYLAVVHPIKSAKWRRPRTAKMITMAVWGVSLLVILPIMIYAGLRSNQWGRSSCTINWPGESGAWYTGFIIYTFILGFLVPLTIICLCYLFIIIKVKSSGIRVGSSKRKKSEKKVTRMVSIVVAVFIFCWLPFYIFNVSSVSMAISPTPALKGMFDFVVVLTYANSCANPILYAFLSDNFKKSFQNVLCLVKVSGTDDGERSDSKQDKSRLNETTETQRTLLNGDLQTSI
Organism_Source Homo sapiens
Functional_Classification G protein-coupled receptor
Cellular_Localization Plasma membrane
Gene_Names SSTR2
UniProt_ID P30874
Protein-Protein Interaction Networks
Peptide Basic Information
Peptide_Name Ac-4-NO2-Phe-c(DCys-Tyr-DTrp-Lys-Thr-Cys)-DTyr-NH2
Peptide_Sequence XcYwKTCy
Peptide_Length 8
Peptide_SMILES C[C@@H](O)[C@H](NC(=O)[C@H](CCCCN)NC(=O)[C@H](Cc1c[nH]c2ccccc12)NC(=O)[C@H](Cc1ccc(O)cc1)NC(=O)[C@H](CS)NC(=O)CN)C(=O)N[C@@H](CS)C(=O)N[C@@H](Cc1ccc(O)cc1)C(=O)O
Chemical_Modification X1=4-nitrophenylalanine
Cyclization_Method Side chain-side chain cyclization; c2<->C7; other bonds
Linear/Cyclic Cyclic
N-terminal_Modification Acetyl
C-terminal_Modification amide
Amino_Acid_Distribution
Peptide Physicochemical
Molecular_Weight 1023.19
Aliphatic_Index 0.00000
Aromaticity 0.37500
Average_Rotatable_Bonds 3.50000
Charge_at_pH_7 0.87204
Isoelectric_Point 8.21290
Number_of_Hydrogen_Bond_Acceptors 15
Number_of_Hydrogen_Bond_Donors 16
Topological_Polar_Surface_Area 369.52000
X_logP_energy -1.58670
Interaction Information
Affinity IC50=43 nM
Affinity_Assay radioligand binding assay
PDB_ID None
Type antagonist
Structure
Reference Information
Document_Type Research Articles
Title Direct labeling of a somatostatin receptor antagonist via peptide cyclization with Re, 99mTc and 186Re metal centers: Radiochemistry and in vitro evaluation.
Release_Year 2021
PMID 33515899
DOI 10.1016/j.nucmedbio.2020.12.007