dallenzima

Dallenzima is a fictional enzyme introduced for educational and speculative discussion in biochemistry and synthetic biology. It is commonly described as a monomeric protein of about 35 kilodaltons, depicted with a compact alpha/beta fold similar to small hydrolases.

Dallenzima is characterized by broad substrate tolerance for simple amide substrates and is described as catalyzing amide hydrolysis to the corresponding carboxylic acid and amine in aqueous solution. It is said to have an optimal pH near neutral to slightly alkaline conditions, around 7.5 to 8.0, and an experimental temperature near 37°C.

In many depictions, the enzyme is said to possess a catalytic dyad composed of histidine and aspartate or serine residues in the active site, enabling nucleophilic attack by an activated water molecule. This mechanistic outline is used to illustrate general principles of enzyme catalysis, including general base catalysis and transition-state stabilization.

According to the fictional scenario, dallenzima is encoded by genes found in several soil and marine microorganisms and is often presented as part of a hypothetical metabolic pathway named the Dallen cycle. The concept is commonly employed to discuss enzyme structure-function relationships, substrate promiscuity, and potential biotechnological applications.

Applications discussed in teaching contexts include potential use in bioremediation of amide pollutants or in the synthesis of amine-containing compounds. Because dallenzima is not currently isolated or characterized in real experiments, references are limited to teaching resources and speculative models.