@article{150,
  author = {Ferenc Zsila},
  title = {Orosomucoid binding induced amplification of inherent chirality of the immunosuppressant drug sirolimus},
  abstract = {<p>Circular dichroism (CD) spectroscopic data indicate the conformational change of the triene moiety of the immunosuppressive agent sirolimus (rapamycin) upon its binding to human [small alpha]1-acid glycoprotein (orosomucoid). The development of an intense, negative [small pi] [rightward arrow] [small pi]* CD Cotton effect and the bathochromic shift of the corresponding UV band are attributed to the increased helical distortion of the conjugated [small pi]-system. Comparative chiroptical evaluation of the interaction of sirolimus with the separated genetic variants of orosomucoid suggests that the F1/S form is dominant in the amplification of inherent chirality of the triene chromophore while the A variant induces much weaker structural modification. Consistently, the drug binding affinities of the native protein and the F1/S variant estimated from the CD spectra are close to each other ([similar]2 [times] 105 M-1).</p>},
  year = {2015},
  journal = {RSC Adv.},
  volume = {5},
  pages = {84523-84525},
  url = {http://dx.doi.org/10.1039/C5RA14546E},
  doi = {10.1039/C5RA14546E},
}