[Leu]enkephalin   Click here for help

GtoPdb Ligand ID: 1613

Synonyms: [Leu]-enkephalin | leucine enkephalin
Compound class: Endogenous peptide in human, mouse or rat
Species: Human, Mouse, Rat
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Ligand Activity Visualisation Charts

These are box plot that provide a unique visualisation, summarising all the activity data for a ligand taken from ChEMBL and GtoPdb across multiple targets and species. Click on a plot to see the median, interquartile range, low and high data points. A value of zero indicates that no data are available. A separate chart is created for each target, and where possible the algorithm tries to merge ChEMBL and GtoPdb targets by matching them on name and UniProt accession, for each available species. However, please note that inconsistency in naming of targets may lead to data for the same target being reported across multiple charts.

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View interactive charts of activity data across species
2D Structure
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2D Structure

An image of the ligand's 2D structure. For small molecules with SMILES these are drawn using the NCI/CADD Chemical Identifier Resolver. Click on the image to access the chemical structure search tool with the ligand pre-loaded in the structure editor. For other types of ligands, e.g. longer nucleotides and peptides, a manually drawn representation of the molecule may be provided.

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Click here for structure editor
SMILES / InChI / InChIKey
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SMILES / InChI / InChIKey

SMILES (Simplified Molecular Input Line Entry Specification) A specification for unambiguously describing the structure of chemical molecules using short ASCII strings. Canonical SMILES specify a unique representation of the 2D structure without chiral or isotopic specifications. Isomeric SMILES include chiral specification and isotopes.

Standard InChI (IUPAC International Chemical Identifier) and InChIKey InChI is a non-proprietary, standard, textual identifier for chemical substances designed to facilitate linking of information and database searching. An InChIKey is a simplified version of a full InChI, designed for easier web searching.

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Canonical SMILES O=C(CNC(=O)C(Cc1ccc(cc1)O)N)NCC(=O)NC(C(=O)NC(C(=O)O)CC(C)C)Cc1ccccc1
Isomeric SMILES O=C(CNC(=O)C(Cc1ccc(cc1)O)N)NCC(=O)NC(C(=O)NC(C(=O)O)CC(C)C)Cc1ccccc1
InChI InChI=1S/C28H37N5O7/c1-17(2)12-23(28(39)40)33-27(38)22(14-18-6-4-3-5-7-18)32-25(36)16-30-24(35)15-31-26(37)21(29)13-19-8-10-20(34)11-9-19/h3-11,17,21-23,34H,12-16,29H2,1-2H3,(H,30,35)(H,31,37)(H,32,36)(H,33,38)(H,39,40)
InChI Key URLZCHNOLZSCCA-UHFFFAOYSA-N
Classification Click here for help
Compound class Endogenous peptide in human, mouse or rat
Ligand families/groups Neuropeptides
IUPAC Name Click here for help
2-[[2-[[2-[[2-[[2-amino-3-(4-hydroxyphenyl)propanoyl]amino]acetyl]amino]acetyl]amino]-3-phenylpropanoyl]amino]-4-methylpentanoic acid
Synonyms Click here for help
[Leu]-enkephalin | leucine enkephalin
Gene/Precursor Click here for help
Gene symbol Gene name Species Precursor protein name Synonyms
PENK proenkephalin Human proenkephalin-A preproenkephalin
Penk preproenkephalin Mouse proenkephalin-A ENK, Penk, Penk1, PPA
Penk proenkephalin Rat proenkephalin-A Enk, enkephalin, MGC93514, Penk1, Penk2, Penk-rs, preproenkephalin 2, preproenkephalin, related sequence, proenkephalin, proenkephalin 1, proenkephalin 2, proenkephalin-A, proenkephalin related sequence, proenkephalin, related sequence
Database Links Click here for help
Specialist databases
GPCRdb Ligand [Leu]enkephalin
Other databases
BindingDB Ligand 50016831
CAS Registry No. 58822-25-6 (source: NCI)
ChEMBL Ligand CHEMBL15038
Ensembl Gene ENSG00000181195 (Hs), ENSRNOG00000008943 (Rn), ENSMUSG00000045573 (Mm)
GtoPdb PubChem SID 135651802
Human Protein Atlas ENSG00000181195 (Hs)
PubChem CID 3903
Search Google for chemical match using the InChIKey URLZCHNOLZSCCA-UHFFFAOYSA-N
Search Google for chemicals with the same backbone URLZCHNOLZSCCA
UniChem Compound Search for chemical match using the InChIKey URLZCHNOLZSCCA-UHFFFAOYSA-N
UniChem Connectivity Search for chemical match using the InChIKey URLZCHNOLZSCCA-UHFFFAOYSA-N
UniProtKB P04094 (Rn), P22005 (Mm), P01210 (Hs)
Wikipedia Leu-enkephalin