biotin ligase recognition peptide peptide - Bioid Ligase Unraveling the Biotin Ligase Recognition Peptide: A Crucial Element in Protein Biotinylation

Ultraid The intricate world of molecular biology often relies on precise tools for tagging and manipulating proteins. Among these, biotin ligase recognition peptides (BLRPs) have emerged as indispensable components, enabling highly specific and efficient biotinylation of proteins. This process, crucial for various applications in research and diagnostics, hinges on the ability of certain enzymes, primarily biotin ligases, to recognize and attach a biotin molecule to a specific amino acid sequence within a target protein.

At the heart of this process lies the biotin ligase recognition peptide, a short amino acid sequence that acts as a signal for the ligase enzyme. One well-characterized example is the AviTag, a 15-amino acid sequence (GLNDIFEAQKIEWH) derived from the E. coli biotin ligase BirA's natural substrateA generic tool for biotinylation of tagged proteins in transgenic .... This peptide sequence is recognized with remarkable specificity by BirA and its variants, allowing for the precise attachment of biotin to the lysine residue within the recognition sequence.Identification of the interacting partners of a lysosomal ... Beyond the AviTag, other biotin acceptor peptides have been developed and engineered, such as BAP1070 and BAP1108, showcasing ongoing advancements in designing more efficient and versatile peptide substrates for biotinylationGeneration of Peptides for Highly Efficient Proximity .... These engineered peptides often aim to improve ligase binding affinity or modulate the kinetics of the biotinylation reaction.作者：RM Sears·2019·被引用次数：251—This method utilizes a promiscuousbiotin ligase, called BioID, fused to a protein-of-interest that when expressed in cells can be induced to biotinylate ...

The mechanism of biotinylation mediated by a biotin ligase is a well-defined enzymatic process. The biotin ligase, such as the widely studied E. coli biotin ligase BirA, binds to both biotin and ATP, activating the biotin moleculeA promiscuous biotin ligase fusion protein identifies .... It then transfers the activated biotin to a specific lysine residue within the biotin ligase recognition peptidePhage display evolution of a peptide substrate for yeast .... This site-specific biotinylation ensures that only the intended target protein, fused to or containing the recognition peptide, is labeledBiotin Protein Ligase as You Like it - PubMed Central - NIH. This specificity is paramount for applications requiring precise molecular tracking and purification.

The utility of biotin ligase recognition peptides extends across a broad spectrum of biological research. One of the most significant applications is in protein purification. By attaching a biotin tag to a protein of interest via its recognition peptide, researchers can easily isolate the protein using streptavidin or avidin affinity matrices, leveraging the exceptionally strong biotin-streptavidin interactionDetectability of biotin tags by LC-MS/MS. This method is highly effective for purifying recombinant proteins expressed in various systems, including bacterial display systems.

Furthermore, biotinylation serves as a powerful tool for protein detection and imaging. The biotin tag, when bound to streptavidin conjugated with a detectable molecule like a fluorescent dye or an enzyme, allows for sensitive visualization and quantification of the target protein. This is particularly valuable in techniques like Western blotting, ELISA, and immunofluorescence.Detectability of biotin tags by LC-MS/MS

The development of proximity-dependent biotinylation techniques, such as BioID and its successors like BioID2 and AirID, has revolutionized the study of protein-protein interactions and cellular localization.A ubiquitin-specific, proximity-based labeling approach for ... These methods involve fusing a promiscuous biotin ligase to a protein of interest. When activated, the ligase promiscuously biotinylates proteins in its immediate vicinity, effectively labeling the protein's interactome.作者：B Lakkanasirorat·2026—colibiotin ligase. (BirA) and its 15-residue acceptorpeptide(AP or AviTag).[14] To date, directed evolution efforts have focused on improving either. While these techniques utilize promiscuous biotin ligases, the underlying principle of biotin transfer to specific amino acid residues remains2012年3月12日—...biotin ligasefusion proteins for the identification of both interacting. ... P.J. . 1999 . A minimalpeptidesubstrate in biotin holoenzyme .... The biotin ligase recognition peptide concept, in its broader sense, underpins the ability of these enzymes to efficiently transfer biotin.

The biotin ligase recognition peptide is not merely a passive sequence; it's a critical determinant of the efficiency and specificity of the biotinylation process. Factors such as the length and amino acid composition of the peptide can influence the ligase's binding affinity and catalytic activity.作者：DI Kim·2016·被引用次数：1122—A smaller promiscuousbiotin ligase, BioID2, improves localization of its fusion protein ... With our second approach, we used Uniprot to identify ... Ongoing research continues to explore variations and optimizations of these recognition peptides to enhance their compatibility with different biotin ligases and to tailor them for specific experimental needs, including those involving peptide synthesis and the creation of biotin labeled peptides. The ability to engineer and synthesize these peptides with specific properties is fundamental to advancing biomolecular labeling technologies.

In summary, the biotin ligase recognition peptide is a fundamental molecular element enabling precise and efficient biotinylation of proteinsSite-specific labeling of cell surface proteins with .... Its discovery and continued development have empowered researchers with powerful tools for protein purification, detection, and the investigation of complex biological interactions through techniques like proximity dependent biotinylation. The specificity and versatility offered by these recognition peptides underscore their vital role in modern molecular biology.