Microbial nitrilases: versatile, spiral forming, industrial enzymes

Area of Science:

• Biochemistry
• Enzymology
• Structural Biology

Background:

• Nitrilases are enzymes catalyzing the conversion of nitriles to acids and ammonia.
• They belong to a superfamily including amidases, found in prokaryotes and eukaryotes.
• Key conserved residues (cys, glu, glu, lys) form the active site.

Purpose of the Study:

• To review current progress in understanding nitrilase structure and function.
• To highlight insights for enhanced biotechnological applications.
• To address the need for high-resolution microbial nitrilase structures.

Main Methods:

• Literature review of existing studies on nitrilase structure and function.
• Analysis of oligomeric states and subunit association principles.
• Discussion of structure-function relationships and catalytic mechanisms.

Main Results:

• Nitrilases exhibit diverse oligomeric states (dimers to helices) with a conserved dimer interface.
• Common subunit association principles apply to larger oligomers.
• High specificity and enantioselectivity make them valuable biocatalysts.

Conclusions:

• Further research into nitrilase structure is crucial for optimizing biocatalysis and remediation.
• Elucidating microbial nitrilase structures will provide mechanistic insights.
• This review emphasizes the potential for expanded biotechnological uses of nitrilases.