Potential charge transfer probe induced conformational changes of model plasma protein human serum albumin: Spectroscopic, molecular docking, and molecular dynamics simulation study.
The nature of binding of specially designed charge transfer (CT) fluorophore at the hydrophobic protein interior of human serum albumin (HSA) has been explored by massive blue-shift (82 nm) of the polarity sensitive probe emission accompanying increase in emission intensity, fluorescence anisotropy, red edge excitation shift, and average fluorescence lifetimes. Thermal unfolding of the intramolecular CT probe bound HSA produces almost opposite spectral changes. The spectral responses of the molecule reveal that it can be used as an extrinsic fluorescent reporter for similar biological systems. Circular dichrosim spectra, molecular docking, and molecular dynamics simulation studies scrutinize this binding process and stability of the protein probe complex more closely.
Department of Chemistry, University of Calcutta, 92, A.P.C. Road, Kolkata-700009, India.
Sankar
S
Jana
Sasanka
S
Dalapati
Shalini
S
Ghosh
Nikhil
N
Guchhait
D002942:Circular Dichroism; D005454:Fluorescence Polarization; D031541:Fluorescence Resonance Energy Transfer; D006801:Humans; D008958:Models, Molecular; D056004:Molecular Dynamics Simulation; D015335:Molecular Probes; D012709:Serum Albumin / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet
D015335:Molecular Probes; D012709:Serum Albumin