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Resonance raman spectrum of sirohydrochlorin in desulfoviridin from Desulfovibrio gigas
Author(s) -
Lai K. K.,
Yue Kwok To
Publication year - 1990
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1250210105
Subject(s) - raman spectroscopy , sulfite reductase , sulfite , chemistry , resonance (particle physics) , desulfovibrio , normal mode , molecular physics , nuclear magnetic resonance , vibration , physics , atomic physics , reductase , inorganic chemistry , optics , organic chemistry , quantum mechanics , sulfate , enzyme
Resonance Raman spectra with excitations in the Soret region are reported for desulfoviridin, the sulfite reductase from Desulfovibrio gigas. Desulfoviridin contains sirohydrochlorin, a hydroporphyrin of the type isobacteriochlorin. The typical spectrum shows a large number of bands, with the prominent v 4 * mode at 1336 cm −1 . Using perturbation and group theories, we were able to develop some conceptual understanding of the in‐plane vibration modes of isobacteriochlorin. This has enabled us to arrive at the tentative conclusion that the sirohydrochlorin prosthetic groups in desulfoviridin are not coupled to any metal ion(s).