Custom Tagaturonate-Fructuronate Epimerase Production Service

We conduct an in-depth analysis of the enzyme scaffold to identify any rare codons and potential mRNA secondary structures that could potentially impede expression. Following this analysis, we proceed to synthesize the gene and then clone it into high-copy expression vectors. This step is vital as it lays the foundation for efficient and effective enzyme production by ensuring that the gene is optimized for expression in the chosen host system and is properly inserted into a vector that can facilitate high levels of replication.

We screen a variety of host strains, encompassing both E. coli and C. glutamicum, among others. The objective is to pinpoint the most favourable environment that promotes the proper folding of the enzyme into its soluble and active form. This selection process is vital as different host strains have distinct cellular environments and protein-folding machineries, which can impact the yield and quality of the expressed enzyme. Once the optimal strain is identified, we carry out pilot-scale upscaling to prepare for larger-scale production.

We employ a multi-step chromatography approach, which includes affinity, ion exchange, and size exclusion chromatography techniques. Through this sophisticated purification process, we can isolate the epimerase with high purity. Each chromatography step serves a specific purpose in removing different types of impurities, such as host cell proteins, nucleic acids, and other contaminants. This ensures that the final product is free from unwanted substances that could interfere with its function or stability.

Every single batch of the enzyme undergoes exhaustive testing to accurately determine the Michaelis-Menten constants. These tests are conducted using fructuronate/tagaturonate substrates, which are specific to the enzyme's activity. By measuring these constants, we can gain insights into the enzyme's catalytic efficiency, substrate affinity, and maximum reaction rate. This rigorous quality control process guarantees that each batch of the enzyme meets the predetermined standards of performance and reliability.

The enzyme is carefully stabilized in buffers that are specifically designed for its intended application. Alternatively, it can be lyophilized, a process that involves freeze-drying the enzyme to remove water and create a stable, dry powder. This lyophilized form is ideal for long-term storage as it helps to preserve the enzyme's activity over an extended period. When the enzyme is needed for use, it can be easily reconstituted, and our process ensures that it retains a high level of residual activity, enabling it to perform in various biological assays or industrial processes.