Investigation of the Thermostable Branched‐Chain Transaminase from Aeribacillus pallidus: Identification, Characterization, and Application

A yet unidentified branched‐chain transaminase (BCAT), ApBCAT, was identified in the thermostable Aeribacillus pallidus. Notably, ApBCAT exhibits exceptional thermal stability and demonstrates the ability to catalyze a wide range of natural and unnatural amino acids. This combination of broad substrate spectrum and thermal resistance is unusual in the BCAT family, indicating the promising industrial potential of ApBCAT.