Research Catalog · peptide family
Leu-Enkephalin — Research Products
15 catalog items
| Catalog # | Product | Type | Species | Size | Price | Add to cart |
|---|---|---|---|---|---|---|
| 024-33 | [D-Ser2]-Leu-Enkephalin-Thr / Delta-Receptor Peptide / DSLET | Peptides | Other species | 1 mg | $88.00 | |
| 024-34 | [D-Thr2]-Leu-Enkephalin-Thr / DTLET | Peptides | Other species | 5 mg | $104.00 | |
| 024-26 | [Des-Tyr1]-Leu-Enkephalin | Peptides | Other species | 5 mg | $45.00 | |
| 024-21 | Leu-Enkephalin | Peptides | Other species | 500 µg | $27.00 | |
| H-024-21 | Leu-Enkephalin – Antibody Antiserum | Antibodies | Other species | 50 µl | $241.00 | |
| EK-024-21 | Leu-Enkephalin – EIA Kit ELISA / EIA kit | Assay Kits | Other species | 96 wells | $611.00 | |
| EK-024-21CE | Leu-Enkephalin – EIA Kit, CE Mark Certified ELISA / EIA kit | Assay Kits | Other species | 96 wells | $638.00 | |
| FEK-024-21 | Leu-Enkephalin – Fluorescent EIA Kit ELISA / EIA kit | Assay Kits | Other species | 96 wells | $668.00 | |
| FEK-024-21CE | Leu-Enkephalin – Fluorescent EIA Kit, CE Mark Certified ELISA / EIA kit | Assay Kits | Other species | 96 wells | $695.00 | |
| T-024-21 | Leu-Enkephalin – I-125 Labeled I-125 labeled | Labeled Peptides | Other species | 10 µCi | $1159.00 | |
| T-G-024-21 | Leu-Enkephalin – I-125 Labeled Purified IgG I-125 labeled | Labeled Antibodies | Other species | 10 µCi | $1159.00 | |
| G-024-21 | Leu-Enkephalin – Purified IgG Antibody Purified IgG | Antibodies | Other species | 400 µg | $444.00 | |
| RK-024-21 | Leu-Enkephalin – RIA Kit RIA kit | Assay Kits | Other species | 125 tubes | $942.00 | |
| 024-31 | Leu-Enkephalin (Tyr-Gly-Gly-Phe-Leu-Arg-Lys) | Peptides | Other species | 1 mg | $38.00 | |
| 024-32 | Leu-Enkephalin, sulfated form | Peptides | Other species | 500 µg | $88.00 |
All items are supplied for in vitro laboratory research use only — not for human or veterinary use, diagnosis or therapy. Prices are per unit as listed; each catalog number ships with its Certificate of Analysis.
Leu-Enkephalin — frequently asked
What is leu-enkephalin?
Leu-enkephalin is the endogenous opioid pentapeptide Tyr-Gly-Gly-Phe-Leu, produced largely from proenkephalin. It shows a preference for delta-opioid receptors in binding studies and acts through inhibitory G protein signalling in neuronal preparations.
Why use DSLET or DTLET instead of the native peptide?
Native enkephalins are degraded quickly by neprilysin and aminopeptidase N. Substituting a D-amino acid at position 2 and extending the C-terminus slows breakdown and improves delta selectivity, giving a more stable agonist for tissue and cell experiments.
What is [des-Tyr1]-leu-enkephalin used for?
Removing the N-terminal tyrosine abolishes opioid receptor recognition, so this analog serves as a negative control. Running it alongside the active peptide helps confirm that an observed response depends on genuine opioid receptor engagement.