Fig. 7.

Characterisation of nitrate reductase and its involvement in synthesis of AgNPs

a Fractionation of proteins and associated specific nitrate reductase activity from total extracellular protein extract of JP2 strain using gel‐filtration chromatography

b Comparison of specific activity of purified fractions and their enzyme activities for AgNO₃ solution

c Positive correlation (r = 0.715) indicating the involvement of nitrate reductases in the reduction of AgNO₃ salt and synthesising AgNPs