Peptide Science research editorial team.
TB-500 Fragment 17 to 23, 10mg Overview
TB-500 Fragment 17 to 23, 10 mg from Peptide Science is the truncated 7-amino-acid active fragment of the 43-residue Thymosin Beta-4 protein, corresponding to the actin-binding motif KLKKTET at positions 17 to 23 of the parent sequence. The 10 mg lyophilised vial is the format most cited in preclinical actin-research protocols and tissue-repair cell-culture work.
Class and Sequence Notes
The 7-residue KLKKTET fragment is the central actin-binding motif of the larger 43-residue Thymosin Beta-4 protein. The truncated form retains a subset of the parent protein’s activity in cell-culture systems, including effects on G-actin sequestration kinetics, and is the version most often referenced when literature describes “TB-500” without further qualification. Research protocols requiring the complete protein behaviour use the 43-residue version listed elsewhere in this catalogue. Browse the broader healing peptide range.
Specifications
| Property | Value |
|---|---|
| Compound | TB-500 Fragment (Thymosin Beta-4 residues 17 to 23) |
| Sequence | KLKKTET (Lys-Leu-Lys-Lys-Thr-Glu-Thr) |
| Amino-acid count | 7 |
| Molecular weight | approximately 889 g/mol |
| Class | Beta-thymosin active-fragment peptide |
| Supplied form | Lyophilised powder, sealed vial |
| Strength | 10 mg per vial |
| Purity | greater than 99 percent (HPLC verified) |
| Storage | 2 to 8 degrees Celsius lyophilised; minus 20 degrees Celsius long-term |
For research requiring the complete 43-residue Thymosin Beta-4 protein, see TB-500 5mg full 43-residue Thymosin Beta-4.
Handling and Stability
The 7-amino-acid fragment is stable at 2 to 8 degrees Celsius in the sealed lyophilised vial. For paired research with the pentadecapeptide BPC-157, see the BPC-157 plus TB-500 10mg Blend or the single-compound BPC-157 10mg.
Quality and Shipping
Each batch passes HPLC at greater than 99 percent purity, with mass-spec confirmation against the 889 g/mol theoretical molecular weight. A Certificate of Analysis accompanies every order. Material is filled in a US laboratory and dispatched in insulated, temperature-monitored packaging.
For laboratory research and development use only. Not for human or veterinary consumption. Has not been evaluated by the U.S. Food and Drug Administration and is not intended to diagnose, treat, cure, or prevent any disease. Purchasers acknowledge they are qualified researchers age 21 or older and accept responsibility for compliance with all applicable federal, state, and local laws. Lyophilised vials store at 2 to 8 degrees Celsius; protect from light.
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