00930nas a2200157 4500008004500000020002200045245008800067210006900155260001900224520041500243653001100658100002000669700001400689700002000703856004900723 2014 Engldsh a978-1-4799-3877-300aMeasurements and Calculations of Protein Intramolecular Vibrations in the THz Range0 aMeasurements and Calculations of Protein Intramolecular Vibratio aNew YorkbIeee3 a
We report the calculations and measurements of intramolecular vibrational modes and their dependence on inhibitor binding in the THz range. We see an increase in anisotropic THz absorption at low frequency with inhibitor binding in both the measurements and calculations. This surprising result suggests an increase in flexibility with binding. We will discuss the possible reasons for this discrepancy.
10acharmm1 aNiessen, K., A.1 aSnell, E.1 aMarkelz, A., G. uhttps://markelz.physics.buffalo.edu/node/24001415nas a2200349 4500008004500000020002200045245004200067210004200109260004900151490000900200520047800209653002300687653001300710653000900723653002300732653002500755653001700780653001200797653002100809653001700830653001400847100001400861700002000875700001900895700001400914700002000928700001300948700002100961700001700982700001700999856004901016 2013 Engldsh a978-0-8194-9392-700aMeasuring phonons in protein crystals0 aMeasuring phonons in protein crystals aBellinghambSpie-Int Soc Optical Engineering0 v86233 aUsing Terahertz near field microscopy we find orientation dependent narrow band absorption features for lysozyme crystals. Here we discuss identification of protein collective modes associated with the observed features. Using normal mode calculations we find good agreement with several of the measured features, suggesting that the modes arise from internal molecular motions and not crystal phonons. Such internal modes have been associated with protein function.
10acorrelated motions10adynamics10amode10amolecular crystals10amolecular vibrations10anormal modes10aphonons10aprotein dynamics10aspectroscopy10aTerahertz1 aAcbas, G.1 aNiessen, K., A.1 aGeorge, D., K.1 aSnell, E.1 aMarkelz, A., G.1 aBetz, M.1 aElezzabi, A., Y.1 aSong, J., J.1 aTsen, K., T. uhttps://markelz.physics.buffalo.edu/node/218