PROJECT TITLE :

Catalytic role of traditional enzymes for biosynthesis of biogenic metallic nanoparticles: a mini-review

ABSTRACT:

Although the formation mechanism of biogenically metallic nanoparticles is broadly associated to enzyme mediation, major attention has been given to the role of proteins and peptides in oxido-reduction of metallic ions leading to those nanostructures. Among the wide range of biomolecules that may act not solely as capping agents however additionally as non-enzymatic agents to make nanoparticles, disulphide bridge-containing peptides and amino acids significantly stand out. The literature proposes that they actively participate in the method of nanoparticles' synthesis, with thiols groups and disulphide bridge moieties as the reaction catalytic sites. Similarly, denaturated enzymes containing exposed S-S or S-H moieties are ready to cut back metallic ions to make nanoparticles. This mini-review is focused on the biogenic synthesis of metallic nanoparticles like gold, silver, copper, platinum, palladium, lead and selenium, in that proteins, peptides, reductases and even oxido-reductases act as non-enzymatic catalysts of the reduction reaction, opening economically and ecologically favourable views in the nanoparticles synthesis field.