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Chemistry

D-Index
47
Citations
8977
World Ranking
15557
National Ranking
3926

Overview

Patrik R. Callis is affiliated with Montana State University in the United States. Their research primarily falls within the field of Biochemistry, Genetics and Molecular Biology, including subfields such as Molecular Biology, Biophysics, Cellular and Molecular Neuroscience, Atomic and Molecular Physics and Optics, and Physical and Theoretical Chemistry.

The scientist's work focuses on topics including Protein Structure and Dynamics, Advanced Fluorescence Microscopy Techniques, Photoreceptor and Optogenetics Research, Receptor Mechanisms and Signaling, Spectroscopy and Quantum Chemical Studies, Photochemistry and Electron Transfer Studies, and Electrochemical Analysis and Applications.

Patrik R. Callis has published multiple research papers in various scientific journals. Some of the notable recent papers include:

  • Local Electric Field Controls Fluorescence Quantum Yield of Red and Far-Red Fluorescent Proteins, 2021, Frontiers in Molecular Biosciences
  • Buried Liquid Interfaces as a Form of Chemistry in Confinement: The Case of 4-Dimethylaminobenzonitrile at the Silica-Aqueous Interface, 2020, Journal of the American Chemical Society
  • Water as an Essential Cofactor for All Enzymes, 2020, Biophysical Journal
  • Water as a reactant in the first step of triosephosphate isomerase catalysis, 2021, bioRxiv (Cold Spring Harbor Laboratory)
  • Surveying Enzyme Crystal Structures Reveals the Commonality of Active-Site Solvent Accessibility and Enzymatic Water Networks, 2025, ACS Omega

The publication venues where Patrik R. Callis frequently contributes include:

  • Frontiers in Molecular Biosciences
  • Journal of the American Chemical Society
  • Biophysical Journal
  • bioRxiv (Cold Spring Harbor Laboratory)
  • ACS Omega

The scientist collaborates regularly with several researchers, with frequent co-authors including Pedro L. Muíño, Mikhail Drobizhev, Rosana S. Molina, J. Nathan Scott, and Gerard G. Lambert.

Best Publications

  • Mechanisms of Tryptophan Fluorescence Shifts in Proteins

    James T. Vivian;Patrik R. Callis

  • Fluorometric determination of the neutral lipid content of microalgal cells using Nile Red

    Keith E. Cooksey;James B. Guckert;Scott A. Williams;Patrik R. Callis

  • 1LA AND 1LB TRANSITIONS OF TRYPTOPHAN : APPLICATIONS OF THEORY AND EXPERIMENTAL OBSERVATIONS TO FLUORESCENCE OF PROTEINS

    Patrik R. Callis

  • TRYPTOPHAN FLUORESCENCE SHIFTS IN PROTEINS FROM HYBRID SIMULATIONS: AN ELECTROSTATIC APPROACH

    Patrik R. Callis;Berit K. Burgess

  • Photophysics of indole derivatives : experimental resolution of La and Lb transitions and comparison with theory

    Maurice R. Eftink;LeRoy A. Selvidge;Patrik R. Callis;Aden A. Rehms

  • Advances in calculating Raman excitation profiles by means of the transform theory

    B. R. Stallard;P. M. Champion;Patrik R. Callis;A. C. Albrecht

  • Hybrid simulations of solvation effects on electronic spectra: Indoles in water

    Pedro L. Muiño;Patrik R. Callis

  • Perturbation selection rules for multiphoton electronic spectroscopy of neutral alternant hydrocarbonsa)

    Patrik R. Callis;Thomas W. Scott;A. C. Albrecht

  • Understanding the variable fluorescence quantum yield of tryptophan in proteins using QM-MM simulations. Quenching by charge transfer to the peptide backbone

    Patrik R. Callis;James T. Vivian

  • Mechanism of the Very Efficient Quenching of Tryptophan Fluorescence in Human γD- and γS-Crystallins: The γ-Crystallin Fold May Have Evolved To Protect Tryptophan Residues from Ultraviolet Photodamage†

    Jiejin Chen;Patrik R. Callis;Jonathan King

  • Mechanism of the Highly Efficient Quenching of Tryptophan Fluorescence in Human γD-Crystallin†

    Jiejin Chen;Shannon L Flaugh;Patrik R Callis;Jonathan King

  • Molecular orbital theory of the 1<i>L</i> <i>b</i> and 1<i>L</i> <i>a</i> states of indole

    Unknown

  • Two-photon-induced fluorescence.

    Patrik R. Callis

  • Molecular Orbital Theory of the 1La and 1Lb States of Indole. 2. An ab Initio Study

    Lee S. Slater;Patrik R. Callis

  • Application of the transform theory to resonance Raman excitation profiles in the Soret region of cytochrome‐c

    B. R. Stallard;P. R. Callis;P. M. Champion;A. C. Albrecht

  • AB INITIO CALCULATIONS OF VIBRONIC SPECTRA FOR INDOLE

    Patrik R. Callis;James T. Vivian;Lee S. Slater

  • Two-photon fluorescence excitation spectra of aromatic amino acids

    Aden A. Rehms;Patrik R. Callis

  • FLUORESCENT TAUTOMERS AND THE APPARENT PHOTOPHYSICS OF ADENINE AND GUANINE

    Robert W. Wilson;Patrik R. Callis

  • Resolution of La and Lb bands in methyl indoles by two-photon spectroscopy

    Aden A. Rehms;Patrik R. Callis

  • Ionization Potentials of Fluoroindoles and the Origin of Nonexponential Tryptophan Fluorescence Decay in Proteins

    TQ Liu;PR Callis;BH Hesp;M de Groot

  • Fluorescence lifetime measurements of fluoranthene, 1-naphthol, and napropamide in the presence of dissolved humic Acid.

    Shaojin. Chen;William P. Inskeep;Scott A. Williams;Patrik R. Callis

  • Fluorescence of reduced nicotinamides using one- and two-photon excitation.

    Borys Kierdaszuk;Borys Kierdaszuk;Henryk Malak;Ignacy Gryczynski;Patrik Callis

Frequent Co-Authors

Bruce S. Hudson
Bruce S. Hudson Syracuse University
Joseph R. Lakowicz
Joseph R. Lakowicz University of Maryland, Baltimore
Robert J. Twieg
Robert J. Twieg Kent State University
Bern Kohler
Bern Kohler The Ohio State University
Ignacy Gryczynski
Ignacy Gryczynski University of North Texas Health Science Center
Robert W. Woody
Robert W. Woody Colorado State University
William P. Inskeep
William P. Inskeep Montana State University
W. E. Moerner
W. E. Moerner Stanford University
Angela M. Gronenborn
Angela M. Gronenborn University of Pittsburgh

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