Platinum nanozyme logic gates for probing biomolecular recognition and interaction dynamics

Area of Science:

• Biochemistry
• Materials Science
• Origin of Life Studies

Background:

• Nanozymes, particularly platinum nanozymes on graphene oxide (Pt/GO), are explored as models for primitive catalytic systems.
• Graphene oxide's properties resemble early mineral surfaces, facilitating emulation of prebiotic catalytic microenvironments.
• These systems bridge abiotic catalysis and biological information processing.

Purpose of the Study:

• To investigate interactions between proteins, amino acids, and Pt/GO nanozymes.
• To construct and analyze logic gate systems (NAND, IMPLICATION) using Pt/GO nanozymes.
• To model primitive information processing and molecular recognition in early biochemical evolution.

Main Methods:

• Design of NAND and IMPLICATION logic gates using bovine serum albumin (BSA), protons (H⁺), cysteine (Cys), and N-ethylmaleimide (NEM) as inputs.
• Definition of input states based on concentration thresholds.
• Demonstration of biochemical output regulation via Pt/GO nanozymes-based logic gates.

Main Results:

• Pt/GO nanozymes successfully emulated early catalytic behavior and primitive information processing.
• Logic gate systems demonstrated tunable, enzyme-like activities and molecular recognition capabilities.
• Regulation of biochemical outputs was achieved in response to specific molecular cues.

Conclusions:

• Pt/GO nanozymes serve as a viable model platform for studying early molecular evolution and information processing.
• The logic-gate framework enhances understanding of molecular recognition and prebiotic biochemical networks.
• This approach offers a synthetic tool for modeling prebiotic systems and pathway computation.