PPIRE07445

Target Protein Information
Protein_Name Melanocortin receptor 3
Protein_Sequence MNASCCLPSVQPTLPNGSEHLQAPFFSNQSSSAFCEQVFIKPEVFLSLGIVSLLENILVILAVVRNGNLHSPMYFFLCSLAVADMLVSVSNALETIMIAIVHSDYLTFEDQFIQHMDNIFDSMICISLVASICNLLAIAVDRYVTIFYALRYHSIMTVRKALTLIVAIWVCCGVCGVVFIVYSESKMVIVCLITMFFAMMLLMGTLYVHMFLFARLHVKRIAALPPADGVAPQQHSCMKGAVTITILLGVFIFCWAPFFLHLVLIITCPTNPYCICYTAHFNTYLVLIMCNSVIDPLIYAFRSLELRNTFREILCGCNGMNLG
Organism_Source Homo sapiens
Functional_Classification G protein-coupled receptor
Cellular_Localization Plasma membrane
Gene_Names MC3R
UniProt_ID P41968
Protein-Protein Interaction Networks
Peptide Basic Information
Peptide_Name PG-915
Peptide_Sequence XDXXRWK
Peptide_Length 7
Peptide_SMILES N=C(N)NCCC[C@H](NC(=O)CNC(=O)CNC(=O)[C@H](CC(=O)O)NC(=O)CN)C(=O)N[C@@H](Cc1c[nH]c2ccccc12)C(=O)N[C@@H](CCCCN)C(=O)O
Chemical_Modification X1=norleucine; X3=2-aminoindane-2-carboxylic acid; X4=D-2-naphthylalanine
Cyclization_Method Side chain-side chain cyclization; D2<->K7; amide bond
Linear/Cyclic Cyclic
N-terminal_Modification Acetyl
C-terminal_Modification amide
Amino_Acid_Distribution
Peptide Physicochemical
Molecular_Weight 774.83
Aliphatic_Index 0.00000
Aromaticity 0.14286
Average_Rotatable_Bonds 3.57143
Charge_at_pH_7 0.99813
Isoelectric_Point 9.69502
Number_of_Hydrogen_Bond_Acceptors 11
Number_of_Hydrogen_Bond_Donors 14
Topological_Polar_Surface_Area 378.93000
X_logP_energy -4.20773
Interaction Information
Affinity IC50=190 nM
Affinity_Assay radioligand binding assay
PDB_ID None
Type antagonist
Structure
Reference Information
Document_Type Research Articles
Title Structure-activity studies of the melanocortin peptides: discovery of potent and selective affinity antagonists for the hMC3 and hMC4 receptors.
Release_Year 2002
PMID 12431055
DOI 10.1021/jm0202526