Overview
Recombinant Acyltransferase (RAT) protein is an engineered enzyme produced through bacterial or eukaryotic expression systems. It plays a critical role in lipid metabolism by transferring acyl groups between molecules. The recombinant form is widely preferred over native extracts due to higher purity and batch consistency. In industrial contexts, RAT protein is optimized for specific catalytic activities through protein engineering. Common variants include thermostable mutants for high-temperature processes and substrate-specific isoforms for targeted synthesis applications.
Physical and Chemical Properties
RAT protein typically exhibits optimal activity at neutral to slightly alkaline pH (7.0-8.0) and temperatures between 25-37°C. Its tertiary structure contains conserved catalytic domains that require divalent cations (e.g., Mg²⁺) for activation. The protein is sensitive to denaturation by detergents or organic solvents. Analytical techniques like SDS-PAGE and mass spectrometry confirm its molecular weight and purity. Dynamic light scattering (DLS) may be used to assess aggregation states in solution formulations.
Main Applications
Pharmaceutical companies utilize RAT protein in the synthesis of prodrugs and lipid-based therapeutics. Its ability to modify drug molecules improves bioavailability and targeting efficiency. In academic research, the enzyme serves as a model system for studying protein-ligand interactions and metabolic pathways. Industrial biocatalysis applications include the production of specialty esters and biodegradable polymers.
Safety and Storage
Lyophilized RAT protein is stable for 2-3 years at -20°C when protected from moisture. Reconstituted solutions should be aliquoted to avoid freeze-thaw cycles and used within 1 week when stored at 4°C. While not classified as hazardous, handling should follow biosafety level 1 (BSL-1) protocols. Spills should be cleaned with 70% ethanol, and waste disposed through approved biological waste streams.
B2B Procurement Guide
When sourcing RAT protein, prioritize suppliers with ISO 13485 certification for consistent quality. Key specifications to request include: specific activity (units/mg), endotoxin levels (<1 EU/μg), and absence of protease contaminants. Bulk orders (1-10g) often qualify for 15-30% discounts. Consider contract manufacturing for custom modifications like His-tags or site-directed mutants. Lead times typically range from 4-8 weeks for GMP-grade material.
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