Name: TB-500 Fragment 10mg (10 Vials / Kit)
Brand: HK Peptide
SKU: HK-TB889
Price: 130.00 USD
Availability: InStock

What is TB-500 Fragment?

This peptide reproduces residues 17-23 of Thymosin Beta-4, the specific actin-binding motif (LKKTETQ) considered responsible for much of the parent protein’s activity in cell movement and tissue remodeling, offered here as a smaller, more defined molecule than the full-length protein commonly sold as ‘TB-500.’

How it is understood to work

The LKKTETQ sequence binds monomeric G-actin, a mechanism studied in connection with cell motility, wound-edge closure and blood-vessel formation; researchers use the isolated fragment to test whether this domain alone accounts for effects otherwise attributed to full-length Thymosin Beta-4.

Research status

It is used in wound-healing, cell-migration and structure-activity research that directly compares the fragment’s effects to those of the full-length protein, helping define which functional domain drives which biological effect. This work remains preclinical and cell- or tissue-model based.

This listing: HK Peptide TB-500 Fragment

Brand: HK Peptide
Kit: 10 vials × 10 mg (100 mg in total)
Price per vial: $13.00
Price per mg: $1.30
Also sold by: Uther Peptide 10mg $85.00

Lab testing

There is no public lab report for this listing yet. We can ask the brand for the batch COA before you order. Many buyers also split an independent HPLC test with others who bought the same batch.

Request the batch COA · How group testing works

Bought through escrow: the brand is only paid after you confirm delivery. If the parcel never arrives, or an independent test shows the wrong compound or a significant under-fill, open a claim before releasing payment.

Specifications

Compound: TB-500 Fragment
Also known as: Thymosin Beta-4 Fragment (17-23), Ac-LKKTETQ
Class: Acetylated actin-binding heptapeptide fragment
Form: Lyophilized (freeze-dried) powder
Per vial: 10mg
Molecular formula: C₃₈H₆₈N₁₀O₁₄
Molecular weight: 889.0 g/mol
Sequence: Ac-Leu-Lys-Lys-Thr-Glu-Thr-Gln (Ac-LKKTETQ)
Stated purity: ≥99% (HPLC)
Appearance: White lyophilized powder

Handling & storage

Supplied as a lyophilized powder; store unopened vials at -20 C protected from light, and after reconstitution with bacteriostatic water keep refrigerated and use within the timeframe set by the study protocol.

Concentration check: adding 2 ml of bacteriostatic water to one 10 mg vial gives 5 mg/ml. The Research Lab calculator in your dashboard works this out for any volume.

Questions

How does this fragment differ from full-length TB-500 / Thymosin Beta-4?

Full-length Thymosin Beta-4 is a 43-amino-acid protein; this fragment isolates just the 7-residue actin-binding core (residues 17-23), letting researchers test whether that specific domain reproduces the parent protein’s cell-migration effects.

What should a certificate of analysis confirm for this fragment?

It should confirm the Ac-LKKTETQ sequence by mass spectrometry, HPLC purity, and the expected molecular weight of about 889 g/mol, since the short sequence and acetyl cap are easy to mischaracterize without direct sequence confirmation.

How much TB-500 Fragment is in this kit?

10 vials of 10 mg each, so 100 mg in total. The lab testing section above shows what the brand’s tested vial actually contained.

For laboratory research use only. Not for human or veterinary use. Nothing on this page is medical advice.