
Frontiers in Microbiology, Год журнала: 2025, Номер 16
Опубликована: Май 29, 2025
Chymosin (EC3.4.23.4), primarily sourced from calf abomasum, serves as a conventional coagulant in milk curdling during cheese production. To improve the enzymatic properties and enhance expression of chymosin (BtChy) Kluyveromyces lactis to meet demands industry, silico engineering via hotspot scanning molecular dynamics analysis was adopted. This approach improved activity BtChy on increased its sensitivity at 65°C. Multiple strategies were utilized develop an environmentally friendly method for These included screening constitutive promoters signal peptides, well vitro construction concatemer gene. The optimal combination, comprising P TDH3 promoter, invertase peptide, four-copy gene integrated into yeast genome, identified. After high-density cultivation 5-L bioreactor, recombinant achieved 42,000 SU/mL, 52.5-fold increase over original wild-type
Язык: Английский