But BSA is negatively charged when BSA (Bovine serum albumin ) is dissolved in distilled water and citrate capped gold nanopaticle or silver nanoparticle is also negatively charged so how can these (citrate capped gold /silver nanoparticle and BSA) bind with each other when they are mixed?
I mean any proteins or enzymes. Because I simply need to show shift in LSPR wavelength upon binding of proteins or enzymes with citrate capped gold or silver nanoparticles.
If you change the pH of the NPs will they get distroyed? Cause you can find the isoelectric point of BSA (I think its 4.7) and below it, its net electrical charge is positive.