Vibrational Raman spectroscopic study of scytonemin, the UV-protective cyanobacterial pigment

H. G.M. Edwards; F. Garcia-Pichel; E. M. Newton; D. D. Wynn-Williams

doi:10.1016/S1386-1425(99)00218-8

Vibrational Raman spectroscopic study of scytonemin, the UV-protective cyanobacterial pigment

H. G.M. Edwards, F. Garcia-Pichel, E. M. Newton, D. D. Wynn-Williams

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84 Scopus citations

Abstract

The Raman spectrum of the photoprotective pigment scytonemin found in cyanobacterial sheaths has been obtained for the first time. Its skeletal structure is extensively conjugated and unique in nature. Detailed molecular vibrational assignments are proposed and a distinctive group of four corroborative vibrational bands have been identified as unique indicators for the compound. These bands, especially a prominent feature at wavenumber 1590 cm^-1, are sufficiently conspicuous to be detectable in the mixed biomolecular pools of undisturbed natural microbial communities. This has been confirmed by demonstrating the Raman spectral bands for scytonemin in a sample of an intact intertidal cyanobacterial mat.

Original language	English (US)
Pages (from-to)	193-200
Number of pages	8
Journal	Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Volume	56
Issue number	1
DOIs	https://doi.org/10.1016/S1386-1425(99)00218-8
State	Published - Jan 2000
Externally published	Yes

ASJC Scopus subject areas

Analytical Chemistry
Atomic and Molecular Physics, and Optics
Instrumentation
Spectroscopy

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10.1016/S1386-1425(99)00218-8

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abstract = "The Raman spectrum of the photoprotective pigment scytonemin found in cyanobacterial sheaths has been obtained for the first time. Its skeletal structure is extensively conjugated and unique in nature. Detailed molecular vibrational assignments are proposed and a distinctive group of four corroborative vibrational bands have been identified as unique indicators for the compound. These bands, especially a prominent feature at wavenumber 1590 cm-1, are sufficiently conspicuous to be detectable in the mixed biomolecular pools of undisturbed natural microbial communities. This has been confirmed by demonstrating the Raman spectral bands for scytonemin in a sample of an intact intertidal cyanobacterial mat.",

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AU - Garcia-Pichel, F.

AU - Newton, E. M.

AU - Wynn-Williams, D. D.

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AB - The Raman spectrum of the photoprotective pigment scytonemin found in cyanobacterial sheaths has been obtained for the first time. Its skeletal structure is extensively conjugated and unique in nature. Detailed molecular vibrational assignments are proposed and a distinctive group of four corroborative vibrational bands have been identified as unique indicators for the compound. These bands, especially a prominent feature at wavenumber 1590 cm-1, are sufficiently conspicuous to be detectable in the mixed biomolecular pools of undisturbed natural microbial communities. This has been confirmed by demonstrating the Raman spectral bands for scytonemin in a sample of an intact intertidal cyanobacterial mat.

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Vibrational Raman spectroscopic study of scytonemin, the UV-protective cyanobacterial pigment

Abstract

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