Proximity-dependent biotinylation approaches to study apicomplexan biology

Area of Science:

• Cell biology
• Biochemistry
• Parasitology

Background:

• Proximity-dependent biotinylation (PDB) techniques have revolutionized the study of protein environments within living cells.
• Enzymes like BirA* and APEX, fused to proteins of interest, biotinylate nearby proteins, enabling the mapping of protein complexes and cellular compartments.
• PDB is increasingly applied to apicomplexan parasites, which are medically significant pathogens.

Purpose of the Study:

• To provide an overview of PDB techniques and compare them with alternative methods.
• To highlight advancements in PDB, including novel enzyme variants and conditional approaches, enhancing temporal and spatial resolution.
• To review the application of PDB in apicomplexan parasites and its contribution to understanding these organisms.

Main Methods:

• Overview of proximity-dependent biotinylation (PDB) approaches.
• Comparison of PDB with other protein interaction and localization techniques.
• Review of PDB applications in apicomplexan parasite research.

Main Results:

• PDB excels at detecting weak or transient protein associations under physiological conditions.
• PDB is valuable for studying difficult-to-purify or poorly characterized cellular structures.
• New PDB developments offer improved temporal and spatial resolution for broader applications.

Conclusions:

• PDB techniques are powerful tools for investigating protein interactions and cellular organization in living cells.
• The application of PDB in apicomplexan parasites has significantly advanced our knowledge of these medically important organisms.
• Ongoing developments in PDB promise even wider applicability in biological research, particularly in parasitology.