12 months from date of receipt, -20 to -70 °C as supplied.
6 months, -20 to -70 °C under sterile conditions after reconstitution.
1 week, 2 to 8 °C under sterile conditions after reconstitution.
Please avoid repeated freeze-thaw cycles.
The SpyTag/SpyCatcher system is a technology for irreversible conjugation of recombinant proteins. The peptide SpyTag (13 amino acids) spontaneously reacts with the protein SpyCatcher (12.3 kDa) to form an intermolecular isopeptide bond between the pair. DNA sequence encoding either SpyTag or SpyCatcher can be recombinantly introduced into the DNA sequence encoding a protein of interest, forming a fusion protein. These fusion proteins can be covalently linked when mixed in a reaction through the SpyTag/SpyCatcher system. Using the Tag/Catcher pair, bioconjugation can be achieved between two recombinant proteins that would otherwise be restrictive or impossible with traditional direct genetic fusion between the two proteins. For example, issues regarding protein folding, suboptimal expression host, and specialized post-translational modifications can be alleviated by separating the production of the proteins with the modularity of the Tag/Catcher system.
2 μg（R: reducing conditions）
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