TB-500 – Thymosin Beta-4 Fragment for Research

TB-500 is a synthetic research peptide corresponding to the N-acetylated 17–23 fragment of human thymosin beta-4. Its compact seven-amino-acid sequence, Ac-LKKTETQ, represents an important region associated with actin-related cellular processes. This clearly defined molecular structure makes TB-500 particularly relevant for professional laboratory studies involving actin dynamics, cytoskeletal organisation, endothelial-cell behaviour, cellular migration and peptide structure–activity relationships. TB-500 is supplied as a premium lyophilised research material in a securely sealed vial with clear batch information, professional packaging and fast order processing from Peptides Divas.

Key Product Features

• Synthetic thymosin beta-4 fragment
• N-acetylated peptide sequence
• Clearly defined Ac-LKKTETQ structure
• Seven-amino-acid research peptide
• Relevant for actin-related cellular research
• Suitable for cytoskeletal and migration studies
• Useful for endothelial-cell models
• Suitable for analytical peptide characterisation
• Supplied as a lyophilised research material
• Clear batch-specific product information
• Secure and discreet packaging
• Fast and trackable European delivery

What Is TB-500?

TB-500 is a synthetic heptapeptide identified as the N-terminally acetylated 17–23 fragment of human thymosin beta-4. Its amino-acid sequence is: Ac-Leu–Lys–Lys–Thr–Glu–Thr–Gln The abbreviated sequence is: Ac-LKKTETQ TB-500 contains the central actin-binding motif associated with thymosin beta-4, but it is a separate and much smaller research compound than full-length thymosin beta-4. This distinction is important because TB-500 and complete thymosin beta-4 have different molecular sizes, analytical profiles and research characteristics.

TB-500 Versus Thymosin Beta-4

TB-500 is often incorrectly described as being identical to thymosin beta-4. Full-length thymosin beta-4 is a naturally occurring 43-amino-acid protein involved in actin regulation. TB-500 is a synthetic seven-amino-acid fragment derived from one region of that protein.

Product characteristic	TB-500
Compound type	Synthetic peptide fragment
Peptide sequence	Ac-LKKTETQ
Peptide length	Seven amino acids
Parent protein	Thymosin beta-4
Parent-protein region	Amino acids 17–23
Structural feature	N-terminal acetylation
Main research area	Actin-related cellular signalling

Researchers should confirm the exact sequence using the product label and batch-specific analytical documentation.

Actin-Related Research

Actin is an essential cellular protein involved in maintaining cell structure, movement and cytoskeletal organisation. The LKKTETQ region is associated with the actin-binding domain of thymosin beta-4, making TB-500 relevant for research involving:

• Actin-related cellular processes
• Cytoskeletal organisation
• Cell shape and structural dynamics
• Actin polymerisation models
• Actin-binding interactions
• Cellular movement
• Focal adhesion pathways
• Cell-to-matrix communication
• Comparative actin-binding research
• Peptide–protein interactions

The exact behaviour of the isolated TB-500 fragment may differ from the activity of complete thymosin beta-4.

Cellular Migration Research

Cellular migration is a complex process involving actin remodelling, cytoskeletal organisation, adhesion proteins and extracellular signals. TB-500 may be relevant for controlled laboratory research involving:

• Cellular migration
• Endothelial-cell movement
• Fibroblast migration
• Cytoskeletal rearrangement
• Cell adhesion
• Cell spreading
• Actin-dependent movement
• Concentration-response relationships
• Comparative peptide screening
• Migration-assay development

These research areas describe experimental cellular pathways and do not represent guaranteed biological or therapeutic outcomes.

Endothelial-Cell Research

Endothelial cells form the inner lining of blood vessels and are frequently used in laboratory research involving migration, adhesion and vascular signalling. Potential TB-500 research applications include:

• Endothelial-cell migration
• Endothelial-cell adhesion
• Tubule-formation models
• Cell-sprouting assays
• Vascular signalling
• Angiogenesis-associated pathways
• Cytoskeletal organisation
• Cell–matrix interactions
• Comparative endothelial assays
• Molecular-response analysis

Research involving thymosin beta-4 and its actin-binding region has examined endothelial migration and vessel-sprouting mechanisms in preclinical models.

Cytoskeletal Research

The cytoskeleton is a dynamic network that supports cell shape, intracellular transport, movement and division. TB-500 may be useful for studies examining:

• Actin-filament organisation
• Cytoskeletal remodelling
• Cellular polarity
• Cell-shape changes
• Intracellular transport
• Cell migration
• Adhesion-complex formation
• Mechanical cellular responses
• Actin-associated protein interactions
• Comparative cytoskeletal models

Its compact sequence offers researchers a convenient way to study a specific thymosin beta-4-derived region without using the entire parent protein.

Peptide Structure Research

The small and clearly defined structure of TB-500 makes it suitable for peptide chemistry and structure–activity research. Potential research areas include:

• Synthetic heptapeptide characterisation
• N-terminal acetylation
• Peptide stability
• Enzymatic degradation
• Peptide metabolite identification
• Structure–activity relationships
• Amino-acid sequence analysis
• Molecular modelling
• Peptide–protein interactions
• Comparative fragment research

Researchers may compare TB-500 with full-length thymosin beta-4, non-acetylated LKKTETQ or shorter metabolites to examine how molecular modifications affect analytical and cellular behaviour.

Metabolite Research

Analytical research has identified several shorter TB-500-related metabolites, including:

• Ac-LKKTE
• Ac-LKK
• Ac-LK
• Ac-L

These fragments may be studied in relation to:

• Peptide degradation
• Metabolic stability
• Microsomal metabolism
• Fragment identification
• Analytical detection
• Comparative peptide activity
• Mass-spectrometry method development
• Time-dependent degradation
• Reference-standard analysis

Potential Research Applications

TB-500 may be relevant for controlled scientific studies involving:

• Actin-binding mechanisms
• Cytoskeletal organisation
• Cellular migration
• Cell adhesion
• Endothelial-cell models
• Fibroblast models
• Vascular signalling
• Angiogenesis-associated pathways
• Peptide-fragment biology
• N-terminal acetylation
• Structure–activity relationships
• Peptide stability
• Metabolite analysis
• Analytical peptide characterisation
• Chromatographic analysis
• Mass-spectrometry analysis
• Comparative thymosin beta-4 research

The exact concentrations, controls and analytical procedures should be established by the qualified laboratory conducting the research.

Analytical Research

TB-500 is suitable for professional analytical applications involving:

• High-performance liquid chromatography
• Liquid chromatography–mass spectrometry
• Peptide identity confirmation
• Sequence verification
• Purity assessment
• Stability testing
• Metabolite identification
• Degradation profiling
• Solubility assessment
• Reference-material comparison
• Analytical method development
• Comparative peptide-fragment analysis

Because TB-500 is a short acetylated peptide, analytical procedures should be validated specifically for Ac-LKKTETQ.

Product Specifications

Product characteristic	Information
Product name	TB-500
Full identification	N-acetylated thymosin beta-4 fragment 17–23
Peptide sequence	Ac-LKKTETQ
Full sequence	Ac-Leu–Lys–Lys–Thr–Glu–Thr–Gln
Product category	Synthetic research peptide
Peptide type	N-acetylated heptapeptide
Peptide length	Seven amino acids
Parent protein	Human thymosin beta-4
Primary research areas	Actin, cytoskeletal and cellular-migration research
Form	Lyophilised research material
Presentation	Securely sealed research vial
Documentation	Batch-specific analytical information
Packaging	Secure and discreet packaging
Intended application	Scientific, analytical and laboratory research

Lyophilised Research Format

TB-500 is supplied as a lyophilised research material in a securely sealed vial. Lyophilisation removes moisture and helps support peptide stability during controlled storage and transportation. Minor differences in physical appearance may occur because of quantity, production conditions and residual moisture. Product identity, sequence and analytical quality should always be confirmed using the documentation associated with the applicable batch.

Quality and Product Transparency

Peptides Divas focuses on clear product specifications, careful handling and batch-level traceability. Available analytical information may include:

• Product identification
• Confirmed Ac-LKKTETQ sequence
• Batch or lot number
• Reported purity
• HPLC analysis
• Mass-spectrometry data
• Testing information
• Product appearance
• Storage recommendations

This provides researchers with clear and traceable product information for the applicable batch.

Storage Information

Store TB-500 in its original sealed packaging according to the conditions stated on the product label and applicable batch documentation. Protect the research material from:

• Direct sunlight
• Excessive heat
• Moisture
• Contamination
• Damaged packaging
• Repeated temperature fluctuations
• Unnecessary exposure to air

The receiving laboratory is responsible for establishing appropriate preparation, handling and storage procedures for its specific research protocol.

Why Choose TB-500?

TB-500 provides a compact and clearly identified thymosin beta-4 fragment for advanced cellular and analytical research. Key research advantages include:

• Precisely defined Ac-LKKTETQ sequence
• Compact seven-amino-acid structure
• Relevant for actin-related research
• Suitable for cellular-migration studies
• Useful for endothelial-cell models
• Valuable for peptide-metabolite analysis
• Suitable for structure–activity research
• Convenient lyophilised presentation
• Clear batch-specific product information

Why Order from Peptides Divas?

Peptides Divas combines carefully selected research materials with fast, dependable and professional service. Customers benefit from:

• Clearly displayed product specifications
• Batch-specific analytical information
• Fast order processing
• Secure and discreet packaging
• Trackable shipping options
• Careful vial protection
• Responsive customer support
• Reliable European delivery

Choose TB-500 from Peptides Divas for advanced laboratory research involving actin-related signalling, cellular migration, cytoskeletal organisation and peptide-fragment analysis. For laboratory research use only. Not intended for human or veterinary use.