Subtilases - versatile tools for protein turnover, plant development, and interactions with the environment

Area of Science:

• Biochemistry
• Molecular Biology
• Plant Science

Background:

• Subtilases (SBTs) are a large family of serine peptidases.
• SBTs are conserved across Archaea, Bacteria, and Eukarya, with a notable expansion in plants.

Purpose of the Study:

• To provide an overview of subtilase discovery in plants.
• To highlight recent findings on plant SBTs' physiological relevance, structure, and function.

Main Methods:

• Literature review of subtilase research in plants.
• Analysis of evolutionary expansion and functional diversification of plant SBTs.

Main Results:

• Plant SBTs exhibit functional diversification, acquiring novel, plant-specific roles.
• These roles include seed/fruit development, cell wall modification, peptide growth factor processing, epidermal development, environmental responses, and programmed cell death.
• Plant SBTs possess unique biochemical and structural features distinguishing them from homologs in other organisms.

Conclusions:

• The expansion of the SBT family in plants is linked to functional diversification and acquisition of unique physiological roles.
• Understanding plant SBTs' specific features is crucial for comprehending their diverse functions in plant biology.