Macro- and Microphase Separated Protein-Polyelectrolyte Complexes: Design Parameters and Current Progress.

Area of Science:

• Materials Science
• Biochemistry
• Polymer Science

Background:

• Protein-containing polyelectrolyte complexes (PECs) are formed by oppositely charged polymers that condense and phase separate.
• These complexes exhibit diverse morphologies, including liquid condensates, solid precipitates, and spherical micelles.

Purpose of the Study:

• To review recent advances in protein-containing PECs.
• To define design parameters for macro- and microphase separated PECs.
• To discuss applications and characterization techniques for protein-containing PECs.

Main Methods:

• Review of recent scientific literature on protein-containing PECs.
• Analysis of factors influencing PEC formation and morphology.
• Discussion of potential applications and characterization methods.

Main Results:

• Identified key design parameters for protein-containing PECs, including protein characteristics (charge, patchiness), co-polyelectrolyte properties (charge density, structure), and solution conditions (salt, pH).
• Highlighted the influence of these parameters on PEC morphology (macrophase vs. microphase separation).

Conclusions:

• Protein-containing PECs offer tunable properties for various applications.
• Understanding design parameters is crucial for controlling PEC morphology and function.
• Further research in characterization techniques will advance the field.