Spectroscopy Publications

Asher Research Group University of Pittsburgh

 

Following is a list of publications since 1996:

"Peptide Secondary Structure Folding Reaction Coordinate: Correlation between UV Raman Amide III Frequency, Y Ramachandran Angle, and Hydrogen Bonding.", Mikhonin, A. V., S. V. Bykov, et al. (2006). Journal of Physical Chemistry B 110(4): 1928-1943.

"Uncoupled peptide bond vibrations in a-helical and polyproline II conformations of polyalanine peptides.", Mikhonin, A. V. and S. A. Asher (2005). Journal of Physical Chemistry B 109(7): 3047-3052.

"Steady-state and transient ultraviolet resonance Raman spectrometer for the 193-270 nm spectral region.", Bykov, S., I. Lednev, et al. (2005). Applied Spectroscopy 59(12): 1541-1552.

"Simple nanosecond to minutes transient absorption spectrophotometer.", Mikhonin, A. V., M. K. Maurer, et al. (2005). Applied Spectroscopy 59(12): 1534-1540.

"UV Raman Examination of a-Helical Peptide Water Hydrogen Bonding.", Pimenov, K. V., S. V. Bykov, et al. (2005). Journal of the American Chemical Society 127(9): 2840-2841.

"UV Resonance Raman Determination of Polyproline II, Extended 2.51-Helix, and b-Sheet Y Angle Energy Landscape in Poly-L-Lysine and Poly-L-Glutamic Acid.", Mikhonin, A. V., N. S. Myshakina, et al. (2005). Journal of the American Chemical Society 127(21): 7712-7720.

"UV-Resonance Raman Thermal Unfolding Study of Trp-Cage Shows That It Is Not a Simple Two-State Miniprotein.", Ahmed, Z., I. A. Beta, et al. (2005). Journal of the American Chemical Society 127(31): 10943-10950.

"UVRR Spectroscopic Studies of Valinomycin Complex Formation in Different Solvents," A. Ozdemir, I. Lednev and S.A. Asher, Spectrochimica Acta Part A 61, 19-26 (2004).

"UV Raman Demonstrates that ?-Helical Polyalanine Peptides Melt to Polyproline II Conformations," S.A. Asher, A. Mikhonin, S. Bykov, J. Am. Chem. Soc., 126, 8433-8440 (2004).

"A Stable C1b Soluble Protein and Its Regulation of Soluble Type 7 Adenylyl Cyclase: A Prototype for Soluble C1B Models," J. Beeler, S.-Z Yan, S. Bykov, A. Murza, S. A. Asher, W-J Tang, Biochemistry, 43, 15463-15471 (2004).

"Assignments and Conformational Dependencies of the Amide III Peptide Backbone UV Resonance Raman Bands," A. Mikhonin, Z. Ahmed, A. Ianoul and S.A. Asher, J. Phys. Chem. B. 108, 19020-19028 (2004).

"UV Raman Studies of Peptide Conformation Demonstrate that Betanova Does Not Cooperatively Unfold", M. Boyden and S. A. Asher, Biochemistry, 40, 13723-13727 (2002).

"Origin of the unusual dependence of Raman D band on excitation wavelength in graphite-like materials" "A.K. Sood, R. Gupta and S.A. Asher, Appl. Phys., 90, 4494-4497 (2001), 91, 547 (2002).

"UV Resonance Raman Spectroscopic Detection of Nitrate and Nittrite in Wasewater Treatment Processes", A. Ianoul, T. Coleman and S. A. Asher, Anal. Chem., 74, 1459-1461 (2002).

"UV Resonance Raman Study of the Spatial Dependence of alpha-Helix Unfolding" A. Ianoul, A. Mikhonin, I. Lednev and S. A. Asher, J. Phys. Chem. A, 106, 3621-3624 (2002).

"Comparison between UV Raman and Circular Dichroism Detection of Short alpha-Helices in Bombolitin III", A. Ozdemir, I. Lednev and S. A. Asher, Biochemistry, 41, 1893-1896 (2002).

"Transient UV Raman Spectroscopy Finds No Crossing Barrier Between Peptide alpha-Helix to Fully Random Coil Conformation", I. Lednev, A. Karnoup, M. Sparrow and S. A. Asher, J. Am. Chem. Soc. 123, 2388-2392 (2001).

"Dependence of the Peptide Amide III Vibration on the Peptide Dihedral Angle", A. Ianoul, M. Boyden and S. A. Asher, J. Am. Chem. Soc., 123, 7433-7434 (2001).

"UV Resonance Raman Spectroscopy" S. A. Asher, Handbook of Vibrational Spectroscopy, John Wiley & Sons, Ltd., Vol. 1. 557-571 (2001).

"Electronic Excitations of Polyalanine; Test of the Independent Chromophore Approximation" E. Goldmann, S. A. Asher and S. Mukamel, Phys. Chem. Chem. Phys., 3, 2893-2902 (2001).

"Dihedral Angle Dependence of the Amide III Vibration: A Uniquely Sensitive UV Resonance Raman Secondary Structural Probe", A. Ianoul, G. Mix, M. Boyden, A. Karnoup, M. Diem, R. Schweitzer-Stenner and S.A. Asher, J. Am. Chem. Soc., 123, 11775-11781 (2001).

"UV Resonance Raman Study of Angiotensin II Conformation in Non-Aqueous Environments: Lipid Micelles and Acetonitrile", J.S.W. Holtz, I. Lednev and S. A. Asher, Biopolymers (Biospectroscopy), 57, 55-63 (2000).

"Crown-annelated 9,10-bis(1,3-dithiol-2-ylidene)-9,10-dihydroanthracene derivatives: a new efficient transducer in the electrochemical and spectroscopic monitoring of metal complexation", M. Bryce, A. Batsanov, T. Finn, T. Hansen, J. Howard, M. Kamenjicki, I. Lednev and S. A. Asher, Chem. Commun., 295-296 (2000).

"Uncoupled Adjacent Amide Vibrations in Small Peptides", G. Mix, R. Schweitzer-Stenner and S. A. Asher, J. Am. Chem. Soc., 122, 9028-9029 (2000).

"A New 224 nm Hollow Cathode Laser - UV Raman Spectrometer", M. Sparrow, J. Jackovitz, C. Munro, W. Hug and S. A. Asher, Applied Spectroscopy, Vol. 55, 1, 66-70 (2000).

"Raman Instrumentation", R. Bormett and S. A. Asher, Raman Scattering in Materials Science, Chap. 2, 35-54, Materials Science, Eds., W.H.Weber and R. Merlin (2000).

"Different Conformers and Protonation States of Dipeptides Probed by Polarized Raman, UV Resonance Raman and FTIR-Spectroscopy", G. Sieler, R. Schweitzer-Stenner, J. Holtz, V. Pajcini, and S. A. Asher, J. Phys. Chem. B 103, 372-384 (1999).

"Nanosecond UV Resonance Raman Examination of Initial Steps in alpha-Helix Secondary Structure Evolution", I.K. Lednev, A.S. Karnoup, M.C. Sparrow and S.A. Asher, J. Am. Chem. Soc., 121, 4076-4077 (1999).

"UV Raman Examination of the Environmental Dependence of Bombolitin I and Bombolitin III Secondary Structure", J. S. W. Holtz, J. H. Holtz, Z. Chi and S. A. Asher, Biophysical Journal, 76, 3227-3234 (1999).

"UV Resonance Raman Studies of Cis to Trans Isomerization of Glycyl-Glycine Derivatives", J.S.W. Holtz, P. Li and S. A. Asher, J. Am. Chem. Soc., 121, 3762-3766 (1999).

"UV Resonance Raman Examination of Horse Apomyoglobin Acid Unfolding Intermediates", Z. Chi and S. A. Asher, Biochemistry, 38, 8196-8203 (1999). "

"alpha-Helix Peptide Folding and Unfolding Activation Barriers: A Nanosecond UV Resonance Raman Study", I.K. Lednev, A.S. Karnoup, M.C. Sparrow and S.A. Asher, J. Am. Chem. Soc., 121, 8074-8086 (1999).

"Nanosecond UV Resonance Raman Examination of Initial Steps in alpha-Helix Secondary Structure Evolution", I.K. Lednev, A.S. Karnoup, M.C. Sparrow and S.A. Asher, Spectroscopy of Biological Molecules: New Directions, 11-12, Kluwer Academic Publishers (1999).

"Pre-Resonance Raman Single-Crystal Measurements of Electronic Transition Moment Orientations in N-Acetylglycinamide", V. Pajcini and S. A. Asher, J. Am. Chem. Soc., 121, 10942-10954 (1999).

"UV Resonance Raman Determination of Protein Acid Denaturation: Selective Unfolding of Helical Segments of Horse Myoglobin" Z. Chi and S. A. Asher, Biochemistry 37, 2865-2872 (1998).

"UV Resonance Raman Selective Amide Vibrational Enhancement: Quantitative Methodology for Determining Protein Secondary Structure", Z. Chi, X. G. Chen, J. S. W. Holtz, and S. A. Asher, Biochemistry 37, 2854-2864 (1998).

"Nanosecond Time-Resolved UV Resonance Raman Spectroscopy of Protein Folding", I. K. Lednev, A. S. Karnoup, M. C. Sparrow, C. H. Munro and S. A. Asher, Proceedings of the XVI International Conference on Raman Spectroscopy, 292-293 (1998), John Wiley & Sons.

"Lyzozyme Thermal Denaturation: A Steady State and Time Resolved UV Resonance Raman Spectroscopic Study", M. C. Sparrow, I. K. Lednev, A. S. Karnoup, and S. A. Asher, Proceedings of the XVI International Conference on Raman Spectroscopy, 152-153 (1998), John Wiley & Sons.

"UV Resonance Raman Studies of Temperature-Induced Structural Changes in Proteins and Polypeptides", S. Karnoup, I. K. Lednev, M. C. Sparrow, and S. A. Asher, Proceedings of the XVI International Conference on Raman Spectroscopy, 286-287 (1998), John Wiley & Sons.

"Resonance Raman Examination of the Two Lowest Amide pi-pi* Excited States", S. A. Asher, Z. Chi, and P. Li, J. Raman Spectrosc. 29, 927-931 (1998).

"UV Raman Determination of the Environment and Solvent Exposure of Tyr and Trp Residues", Z. Chi and S. A. Asher, J. Phys. Chem. B 102, 9595-9602 (1998).

"UV Resonance Raman Ground and Excited State Studies of Amide and Peptide Isomerization Dynamics", P. Li, X. G. Chen, E. Shulin, and S. A. Asher, J. Am. Chem. Soc. 119, 1116-1120 (1997).

"UV Raman Microspectroscopy: Spectral and Spatial Selectivity with Sensitivity and Simplicity", V. Pajcini, C. H. Munro, R. W. Bormett, R. E. Witkowski, and S. A. Asher, Appl. Spectrosc. 51, 81-86 (1997).

"Reply to [Comment on 'Vibrational Assignments of trans-N-Methylacetamide and Some of Its Deuterated Isotopomers from Band Decomposition of IR, Visible, and Resonance Raman Spectra']", S. A. Asher, P. Li, Z. Chi, X. G. Chen, R. Schweitzer-Stenner, N. G. Mirkin, and S. Krimm, J. Phys. Chem. 101, 3992-3994 (1997).

"UV Studies of Tetrahedral Bonding in Diamondlike Amorphous Carbon", V. I. Merkulov, J. S. Lannin, C. H. Munro, S. A. Asher, V. S. Veerasamy, and W. I. Milne, Phys. Rev. Lett. 78, 4869-4872 (1997).

"UV Lasers Revolutionize Raman Spectroscopy", S. A. Asher, C. H. Munro, and Z. Chi, Laser Focus World, 99-109 (July 1997).

"UV Resonance Raman Determination of alpha-Helix Melting During the Acid Denaturation of Myoglobin", S. A. Asher and Z. Chi, NATO ASI Series Volume, Biomolecular Structure and Dynamics: Recent Experimental and Theoretical Advances, G. Vergoten and T. Theophanides (Eds.), Dordrecht, The Netherlands, 263-270 (1997).

"Dielectric Stack Filters for Ex-Situ and In-Situ UV Optical Fiber Probe Raman Spectroscopic Measurements", C. H. Munro, V. Pajcini, and S. A. Asher, Appl. Spectrosc. 51, 1722-1729 (1997).

"UV Resonance Raman and Absorption Studies of Angiotensin II Conformation in Lipid Environments", N. Cho and S. A. Asher, Biospectroscopy 2, 71-82 (1996).

"Proceedings of the Fifteenth International Conference on Raman Spectroscopy", S. A. Asher and P. Stein, eds., John Wiley and Sons, Chichester, England (1996).

"Proceedings of the Fifteenth International Conference on Raman Spectroscopy", S. A. Asher and P. Stein, 2 (1996).

"Enzymology, Nonaqueous", Chatterjee, S. Bambot, R. Bormett, S. Asher, and A. J. Russell, Encyclopedia of Molecular Biology and Molecular Medicine, R.A. Meyers, Ed., VCG, Weinheim, Germany 249-258 (1996).

"Resonance Raman Examination of the Electronic Excited States of Glycylglycine and Other Dipeptides: Observation of a Carboxylate Amide Charge Transfer Transition", X. G. Chen, P. Li, J. S. W. Holtz, Z. Chi, V. Pajcini, S. A. Asher, and L. A. Kelly, J. Am. Chem. Soc. 118, 9705-9715 (1996).

"Glycylglycine pi–›pi* and Charge Transfer Transition Moment Orientations: Near Resonance Raman Single Crystal Measurement", V. Pajcini, X. G. Chen, R. W. Bormett, S. J. Geib, P. Li, S. A. Asher, and E. G. Lidiak, J. Am. Chem. Soc. 118, 9716-9726 (1996).

"Applications of a New 206.5 nm CW Laser Source: UV Raman Determination of Protein Secondary Structure and CVD Diamond Material Properties", J. S. W. Holtz, R. W. Bormett, Z. Chi, N. Cho, X. G. Chen, V. Pajcini, S. A. Asher, L. Spinelli, P. Owen, and M. Arrigoni, Appl. Spectrosc. 50, 1459-1468 (1996).

"Characterization of Diamond Thin Films by Core-Level Photoabsorption and UV Excitation Raman Spectroscopy" C. D. Zuiker, A. R. Krauss, D. M. Gruen, J. A. Carlisle, L. J. Terminello, S. A. Asher and R. W. Bormett, Mat. Res. Soc. Symp. Proc. 437, 211-218 (1996).