Assembly, architecture and functional roles of microbial surface layers.

Area of Science:

• Microbiology
• Structural Biology
• Bioinformatics

Background:

• Prokaryotic cells frequently possess a surface layer (S-layer), a paracrystalline sheath of lattice-forming proteins.
• S-layer proteins are highly abundant in archaea and bacteria, displaying significant sequence and structural diversity.
• These proteins perform vital structural, protective, and physiological functions.

Purpose of the Study:

• To review recent advances in understanding S-layer biogenesis, organization, and widespread occurrence in prokaryotes.
• To explore the architectural principles and self-assembly mechanisms governing S-layers.
• To examine the diverse functional roles of S-layers in mediating prokaryotic interactions with their environment.

Main Methods:

• Review of structural biology, cell biology, and bioinformatics research.
• Analysis of S-layer protein architecture and self-assembly principles.
• Examination of S-layer functions in microbial interactions.

Main Results:

• S-layers are more widespread in prokaryotes than previously thought.
• Advances in structural biology and bioinformatics have enhanced understanding of S-layer biogenesis.
• S-layers play crucial roles in microbial interactions and community dynamics.

Conclusions:

• Deeper insights into S-layers are critical for understanding multicellular interactions.
• Understanding S-layers is fundamental to deciphering the organization of biofilms and microbiomes.
• S-layers are key to comprehending microbial life on Earth.