The Avi tag sequence is a short 15‑amino‑acid peptide used for site‑specific biotinylation of proteins. The standard Avi tag amino acid sequence is GLNDIFEAQKIEWHE, with the single lysine residue serving as the biotin attachment site for high affinity binding to streptavidin or avidin in purification and detection applications.https://www.betalifesci.com/pa....ges/avi-tagged-prote
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