Overview
Zebrafish tyrosine kinase (TK) belongs to the family of enzymes that transfer phosphate groups to tyrosine residues in proteins, regulating critical cellular processes. As a model organism enzyme, it shares high homology with mammalian counterparts, making it valuable for translational research. Studying zebrafish TK provides insights into vertebrate development and disease mechanisms. Its conserved functional domains enable cross-species comparisons, particularly in signal transduction pathways implicated in cancer and metabolic disorders.
Physical and Chemical Properties
Zebrafish TK typically exhibits optimal activity at pH 7-8 and physiological temperatures (25-37°C). The enzyme requires Mg²⁺ or Mn²⁺ as cofactors for phosphorylation reactions and demonstrates stability in neutral buffers. Commercial preparations often include stabilizing agents like glycerol (10-50%) to maintain enzymatic activity during storage. Analytical techniques such as SDS-PAGE and mass spectrometry confirm molecular weight ranges between 50-60 kDa, depending on splice variants and post-translational modifications.
Main Applications
In developmental biology, zebrafish TK studies elucidate organogenesis and tissue regeneration patterns. Researchers employ gene knockout models to investigate its role in angiogenesis and neural crest cell migration. The pharmaceutical industry utilizes this kinase for target validation in tyrosine kinase inhibitor development. Its cost-effectiveness compared to mammalian systems accelerates high-throughput screening of anticancer compounds while maintaining biological relevance.
Safety and Storage
While zebrafish TK poses minimal acute toxicity, standard laboratory precautions apply: use gloves, eye protection, and work in ventilated areas. Avoid inhalation of lyophilized powder. For optimal preservation, aliquot the enzyme upon receipt and store at -20°C with desiccants. Activity loss occurs after 3-5 freeze-thaw cycles. Shipping typically requires dry ice for international transport to maintain protein integrity.
B2B Procurement Guide
When sourcing zebrafish TK, prioritize suppliers providing detailed Certificates of Analysis (CoA) including specific activity (units/mg), endotoxin levels (<1 EU/μg), and Western blot validation data. Consider application-specific requirements: drug discovery projects may need GMP-grade material, while academic research can utilize standard purity (≥85%). Bulk purchases (10+ mg) often qualify for 15-30% discounts from specialty biochemical vendors.
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