Journal article
Using spectroscopic tools to probe porphyrin deformation and porphyrin-protein interactions
Journal of porphyrins and phthalocyanines, v 15(5-6), pp 312-337
May 2011
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
The reactivity and functionality of heme proteins are to a significant extent determined by the conformation of their functional heme groups and by the interaction of axial ligands with their protein environment. This review focuses on experimental methods and theoretical concepts for elucidating symmetry lowering perturbations of the heme induced by the protein environment of the heme pocket. First, we discuss a variety of methods which can be used to probe the electric field at the heme, including spectral hole burning as well as low temperature absorption and room temperature circular dichroism spectroscopy. Second, we show how heme deformations can be described as superposition of deformations along normal coordinates, thereby using the irreducible representations of the D4h point group as a classification tool. Finally, resonance Raman spectroscopy is introduced as a tool to probe the deformations of metalloprophyrins in solution and in protein matrices by measuring and comparing intensities and depolarization properties rather than wavenumber positions.
A variety of spectroscopic tools can be utilized to probe heme-protein interactions of porphyrin conformations. The combined use of absorption and CD spectroscopy can be used to explore the electric field in the heme cavity. Resonance Raman dispersion spectroscopy is an ideal tool to determine in-plane and out-ofplane deformation of the heme/porphyrin macrocycle.
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Details
- Title
- Using spectroscopic tools to probe porphyrin deformation and porphyrin-protein interactions
- Creators
- Reinhard Schweitzer-Stenner - Drexel University
- Publication Details
- Journal of porphyrins and phthalocyanines, v 15(5-6), pp 312-337
- Publisher
- World Scientific Publishing Company
- Number of pages
- 26
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemistry
- Web of Science ID
- WOS:000292646900003
- Scopus ID
- 2-s2.0-79960351344
- Other Identifier
- 991019168083004721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Chemistry, Multidisciplinary