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Selank

Original price was: A$69.00.Current price is: A$59.00.

Selank, a synthetic heptapeptide studied in hippocampal and cortical cell models.

Research use only. Not for human or veterinary use.

In stock

All prices are in AUD. Ships from Australia with tracked express shipping, $15 flat, 1 to 2 business days, free on orders over $200. Research use only, not for human or veterinary use.

  • Testing status on this page
  • Same-day dispatch before 2pm
  • Dispatched from Australia
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Research use only

Not for human or veterinary use.

Laboratory chemical

Supplied for in vitro research. We publish specifications and handling guidance only, with no protocols and no advice on use.

Not on the ARTG

Absent from the Australian Register of Therapeutic Goods and never evaluated by the TGA for safety, quality or efficacy. Absence from the register is not an approval and does not authorise any other use.

Who can order

You must be 18 or over and purchasing solely for lawful research.

What is Selank?

Selank is a synthetic heptapeptide derived from the tuftsin sequence. It is used in hippocampal and cortical cell culture to study GABAergic signalling, cytokine expression and neurotrophic factor endpoints, and NuVion stocks it in Australia as a 10mg lyophilised vial.

  • Synthetic heptapeptide derived from the tuftsin sequence
  • Used in hippocampal and cortical cell culture models
  • Applied in GABAergic signalling and cytokine expression assays
  • Supplied lyophilised, purity by RP-HPLC and identity by mass spectrometry

Selank structure and research use

Selank has the sequence Thr-Lys-Pro-Arg-Pro-Gly-Pro. The first four residues are tuftsin, a fragment of the immunoglobulin G heavy chain, and the Pro-Gly-Pro tail was added to slow enzymatic breakdown. In the laboratory it is used in hippocampal and cortical cell models for work on GABAergic signalling, cytokine expression and neurotrophic factor endpoints.

Selank research applications

  • Radioligand binding on synaptic membrane preparations using tritiated GABA, muscimol or flunitrazepam, with and without benzodiazepine site ligands
  • Electrophysiology on recombinant GABA-A receptors of defined subunit composition, testing subunit selectivity of allosteric modulation
  • Peptidase kinetics of Leu-enkephalin degradation by aminopeptidase N, neprilysin and ACE, followed by LC-MS or fluorogenic substrates
  • Neuropilin-1 b1 domain binding assays, where tuftsin and Selank separate a free C-terminal arginine from a capped one

Selank key facts

Type Synthetic peptide, tuftsin analogue with a C-terminal Pro-Gly-Pro extension
Amino acid count 7
Sequence H-Thr-Lys-Pro-Arg-Pro-Gly-Pro-OH (TKPRPGP)
Also known as Tuftsin-PGP, Thr-Lys-Pro-Arg-Pro-Gly-Pro
Vial size 10mg, lyophilised
Purity 99.89% by RP-HPLC, Janoshik Analytical
Analysed 10 April 2026

Independent test: a sample of this product was analysed by Janoshik Analytical on 10 April 2026, purity 99.89% by RP-HPLC. The certificate is shown in the lab band on this page.

Why buy Selank from NuVion

Testing status on every page

Published results show the measured purity, the date and the certificate.

Australian stock, domestic post

Held in Australia and sent tracked in plain outer packaging.

Specifications

Sequence Length 7
CAS Number 129954-34-3
Molecular Weight 751.9
Molecular Formula C33H57N11O9

Storing and handling Selank

Before reconstitution
Keep the sealed vial cool, dry and out of direct light. General practice for lyophilised peptides.
After reconstitution
Reconstitute with bacteriostatic or sterile water, store at 2 to 8°C and avoid repeated freeze-thaw cycles. No stability-tested shelf life is published for this product.

Reconstitution and storage Volumes, concentrations and storage at a glance.

Selank questions

Where can I buy Selank in Australia?
NuVion stocks Selank in Australia as a 10mg vial of lyophilised powder, posted from Australian stock on a tracked express service. A sample was analysed by Janoshik Analytical on 10 April 2026, with purity of 99.89% by RP-HPLC. It also comes in the Neuropeptide Signalling Set and the Semax & Selank Pair. Bacteriostatic water is sold separately. Selank is supplied as a research material only and is not on the Australian Register of Therapeutic Goods.
What is Selank used for in research?
It is used in GABA-A receptor radioligand binding and electrophysiology work as an allosteric modulator, and in enzyme assays measuring the degradation of Leu-enkephalin by peptidases. It also serves as a stability comparator against tuftsin and as a model basic peptide in chromatography method development.
How does Selank work at the cell level?
The interaction studied most often is with the GABA-A receptor, a pentameric ligand-gated chloride channel. Selank is used in hippocampal and cortical cultures to study how it changes GABA-A receptor signalling and the expression of related genes. The Selank research profile covers the mechanism in full.
Why is Selank net positive at neutral pH?
Selank carries a lysine and an arginine and has no aspartate or glutamate to offset them. Only the C-terminal carboxylate is negatively charged, so the peptide is net positive across the usual buffer range and highly water soluble.
How is Selank quantified without absorbance at 280 nm?
The sequence has no tryptophan, tyrosine or phenylalanine, so there is no absorbance at 280 nm. Concentration is set at 214 nm or gravimetrically. On a reversed-phase column the peptide elutes very early, so an ion-pairing reagent is normally needed for retention.
Why does Selank behave differently from tuftsin in neuropilin-1 binding?
Tuftsin ends in a free arginine, the C-end rule motif that the b1 domain of neuropilin-1 recognises. In Selank that arginine is internal, capped by Pro-Gly-Pro, so the intact heptapeptide presents no such terminus.
What is the difference between Selank and Semax?
Selank is an analogue of the immunoglobulin fragment tuftsin. Semax is built on a fragment of ACTH. Both carry the same Pro-Gly-Pro tail. NuVion stocks each on its own and both together as the Semax and Selank Pair.

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