Kenneth J. Gruys, Christopher J. Halkides, & Perry A. Frey; "Synthesis and Properties of 2-Acetylthiamin Pyrophosphate: An Enzymatic Reaction Intermediate," Biochemistry 26, (1987), 7575-7585.
John M. Konopka, Christopher J. Halkides, Janeen L. Vanhooke, David G. Gorenstein, & Perry A. Frey, "Uridinediphosphogalactose 4-epimerase. Phosphorus-31 nuclear magnetic resonance analysis of NAD+ and NADH bound at the active site," Biochemistry 28, (1989), 2645.
Christopher J. Halkides & Perry A. Frey; "The Mechanism of Hydrolysis of -Monothiopyrophosphate," J. Am. Chem. Soc. 113 (1991), 9843-9848.
Christopher J. Halkides, Eric S. Lightcap, & Perry A. Frey; "The Chemical and Enzymatic Reactivity of -Monothiopyrophosphate," Heteroatom Chemistry 2 (1991), 171.
Christopher J. Halkides, Matthew Benning, & Perry A. Frey; "The Structure of Tetramethyl -Monothiopyrophosphate," Heteroatom Chemistry 2 (1991), 655.
Eric S. Lightcap, Christopher J. Halkides, & Perry A. Frey; "Interactions of Metal Ions with -Monothiopyrophosphate," Biochemistry 30 (1991), 10307-10313.
Christopher J. Halkides, Eric S. Lightcap, & Perry A. Frey; "The Substrate Reactivity of -Monothiopyrophosphate with Pyrophosphate-Dependent Phosphofructokinase: Evidence for a Dissociative Transition State in Enzymatic Phosphoryl Group Transfer," Biochemistry 30 (1991), 10313-10322.
Russell G. Larsen, Christopher J. Halkides, Alfred G. Redfield, & David J. Singel; "Electron Spin Echo Envelope Modulation Spectroscopy of Mn2+GDP complexes of N-ras p21 with Selective 15N Labeling," J. Am. Chem. Soc. 114 (1992), 9608-9611.
Russell G. Larsen, Christopher J. Halkides, & David J. Singel, "A Geometric Representation of Nuclear Modulation Effects: The Effects of High Electron Spin Multiplicity on the ESEEM Spectra of Mn(II) complexes of N-ras p21," J. Phys. Chem. 98 (1993), 6704-6721.
Anne-Frances Miller, Christopher J. Halkides, and Alfred G. Redfield, "Details of the Conformational Switch of p21ras," Biochemistry 32 (1993), 7367-7376.
Christopher J. Halkides, John Tobin, & Perry A. Frey, "Observation of an Unusually Fast a-keto Deuteriation in Acetylthiamin Pyrophosphate and an Acetyl Thiazolium salt," J. Am. Chem. Soc. 115 (1993), 3332.
Christopher J. Halkides, Christian T. Farrar, Russell G. Larsen, Alfred G. Redfield, & David J. Singel, "Characterization of the Active Site of p21 ras by Electron Spin-Echo Envelope Modulation Spectroscopy with Selective Labeling: Comparisons between GDP- and GTP-forms," Biochemistry 33 (1994), 4019-4035.
Christopher J. Halkides, Christian T. Farrar, & David J. Singel, "The Effects of Cryoprotectants on the Activity and Structure of p21: Implications for Electron Spin-Echo Envelope Modulation Spectroscopy," submitted for publication.
Christopher J. Halkides & Alfred G. Redfield, "The Effect of 17O on the Relaxation of an Amide Proton Within a Hydrogen Bond," J. Biomol. NMR 5 (1995), 362-366.
Brendan F. Bellew, Christopher J. Halkides, Gary J. Gerfen, Robert G. Griffin, and David J. Singel, "High Frequency Electron Paramagnetic Resonance Measurement of the Hydration in Ternary Complexes of Mn(II), Guanine Nucleotides and ras p21," submitted for publication.
Christopher J. Halkides, Brendan F. Bellew, Gary J. Gerfen, Percy H. Carter, Bernice Ruo, David A. Evans, Robert G. Griffin, and David J. Singel, "High Frequency (139.5 GHz) Electron Paramagnetic Resonance Spectroscopy of the GTP Form of p21 ras with Selective 17O-labeling of Threonine, submitted for publication.
Christopher J. Halkides, Yong Qian Wu, and Christopher J. Murray, "A Low Barrier Hydrogen Bond in Subtilisin Carlsberg: H-1 NMR Studies," submitted for publication.
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