Emission of volatile halogenated compounds, speciation and localization of bromine and iodine in the brown algal genome model Ectocarpus siliculosus

Frithjof C. Kuepper; Eric Miller; Stephen Joseph Andrews; Claire Hughes; Lucy Jane Carpenter; Wolfram Meyer-Klaucke; Chiaki Toyama; Yasuyuki Muramatsu; Martin C. Feiters; Carl Carrano

doi:10.1007/s00775-018-1539-7

Emission of volatile halogenated compounds, speciation and localization of bromine and iodine in the brown algal genome model Ectocarpus siliculosus

Frithjof C. Kuepper, Eric Miller, Stephen Joseph Andrews, Claire Hughes, Lucy Jane Carpenter, Wolfram Meyer-Klaucke, Chiaki Toyama, Yasuyuki Muramatsu, Martin C. Feiters, Carl Carrano

Research output: Contribution to journal › Article › peer-review

Abstract

This study explores key features of bromine and iodine metabolism in the filamentous brown alga and genomics model Ectocarpus siliculosus. Both elements are accumulated in Ectocarpus, albeit at much lower concentration factors (2-3 orders of magnitude for iodine, and < 1 order of magnitude for bromine) than e.g. in the kelp Laminaria digitata. Iodide competitively reduces the accumulation of bromide. Both iodide and bromide are accumulated in the cell wall (apoplast) of Ectocarpus, with minor amounts of bromine also detectable in the cytosol. Ectocarpus emits a range of volatile halogenated compounds, the most prominent of which by far is methyl iodide. Interestingly, biosynthesis of this compound cannot be accounted for by vanadium haloperoxidase since the latter have not been found to catalyze direct halogenation of an unactivated methyl group or hydrocarbon so a methyl halide transferase-type production mechanism is proposed.

Original language	English
Pages (from-to)	1119-1128
Number of pages	10
Journal	Journal of Biological Inorganic Chemistry
Volume	23
Issue number	7
Early online date	9 Mar 2018
DOIs	https://doi.org/10.1007/s00775-018-1539-7
Publication status	Published - 1 Oct 2018

Bibliographical note

Keywords

Energy-dispersive X-ray analysis
Halocarbons
Methyl iodide
Phaeophyta
X-ray absorption spectroscopy

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10.1007%2Fs00775-018-1539-7
© The Author(s) 2018
Final published version, 2.59 MBLicence: CC BY

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Kuepper, F. C., Miller, E., Andrews, S. J., Hughes, C., Carpenter, L. J., Meyer-Klaucke, W., Toyama, C., Muramatsu, Y., Feiters, M. C., & Carrano, C. (2018). Emission of volatile halogenated compounds, speciation and localization of bromine and iodine in the brown algal genome model Ectocarpus siliculosus. Journal of Biological Inorganic Chemistry, 23(7), 1119-1128. https://doi.org/10.1007/s00775-018-1539-7

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title = "Emission of volatile halogenated compounds, speciation and localization of bromine and iodine in the brown algal genome model Ectocarpus siliculosus",

abstract = "This study explores key features of bromine and iodine metabolism in the filamentous brown alga and genomics model Ectocarpus siliculosus. Both elements are accumulated in Ectocarpus, albeit at much lower concentration factors (2-3 orders of magnitude for iodine, and < 1 order of magnitude for bromine) than e.g. in the kelp Laminaria digitata. Iodide competitively reduces the accumulation of bromide. Both iodide and bromide are accumulated in the cell wall (apoplast) of Ectocarpus, with minor amounts of bromine also detectable in the cytosol. Ectocarpus emits a range of volatile halogenated compounds, the most prominent of which by far is methyl iodide. Interestingly, biosynthesis of this compound cannot be accounted for by vanadium haloperoxidase since the latter have not been found to catalyze direct halogenation of an unactivated methyl group or hydrocarbon so a methyl halide transferase-type production mechanism is proposed.",

keywords = "Energy-dispersive X-ray analysis, Halocarbons, Methyl iodide, Phaeophyta, X-ray absorption spectroscopy",

author = "Kuepper, {Frithjof C.} and Eric Miller and Andrews, {Stephen Joseph} and Claire Hughes and Carpenter, {Lucy Jane} and Wolfram Meyer-Klaucke and Chiaki Toyama and Yasuyuki Muramatsu and Feiters, {Martin C.} and Carl Carrano",

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Kuepper, FC, Miller, E, Andrews, SJ , Hughes, C , Carpenter, LJ, Meyer-Klaucke, W, Toyama, C, Muramatsu, Y, Feiters, MC & Carrano, C 2018, 'Emission of volatile halogenated compounds, speciation and localization of bromine and iodine in the brown algal genome model Ectocarpus siliculosus', Journal of Biological Inorganic Chemistry, vol. 23, no. 7, pp. 1119-1128. https://doi.org/10.1007/s00775-018-1539-7

Emission of volatile halogenated compounds, speciation and localization of bromine and iodine in the brown algal genome model Ectocarpus siliculosus. / Kuepper, Frithjof C.; Miller, Eric; Andrews, Stephen Joseph et al.
In: Journal of Biological Inorganic Chemistry, Vol. 23, No. 7, 01.10.2018, p. 1119-1128.

Research output: Contribution to journal › Article › peer-review

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AU - Kuepper, Frithjof C.

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AU - Andrews, Stephen Joseph

AU - Hughes, Claire

AU - Carpenter, Lucy Jane

AU - Meyer-Klaucke, Wolfram

AU - Toyama, Chiaki

AU - Muramatsu, Yasuyuki

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AU - Carrano, Carl

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N2 - This study explores key features of bromine and iodine metabolism in the filamentous brown alga and genomics model Ectocarpus siliculosus. Both elements are accumulated in Ectocarpus, albeit at much lower concentration factors (2-3 orders of magnitude for iodine, and < 1 order of magnitude for bromine) than e.g. in the kelp Laminaria digitata. Iodide competitively reduces the accumulation of bromide. Both iodide and bromide are accumulated in the cell wall (apoplast) of Ectocarpus, with minor amounts of bromine also detectable in the cytosol. Ectocarpus emits a range of volatile halogenated compounds, the most prominent of which by far is methyl iodide. Interestingly, biosynthesis of this compound cannot be accounted for by vanadium haloperoxidase since the latter have not been found to catalyze direct halogenation of an unactivated methyl group or hydrocarbon so a methyl halide transferase-type production mechanism is proposed.

AB - This study explores key features of bromine and iodine metabolism in the filamentous brown alga and genomics model Ectocarpus siliculosus. Both elements are accumulated in Ectocarpus, albeit at much lower concentration factors (2-3 orders of magnitude for iodine, and < 1 order of magnitude for bromine) than e.g. in the kelp Laminaria digitata. Iodide competitively reduces the accumulation of bromide. Both iodide and bromide are accumulated in the cell wall (apoplast) of Ectocarpus, with minor amounts of bromine also detectable in the cytosol. Ectocarpus emits a range of volatile halogenated compounds, the most prominent of which by far is methyl iodide. Interestingly, biosynthesis of this compound cannot be accounted for by vanadium haloperoxidase since the latter have not been found to catalyze direct halogenation of an unactivated methyl group or hydrocarbon so a methyl halide transferase-type production mechanism is proposed.

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KW - Methyl iodide

KW - Phaeophyta

KW - X-ray absorption spectroscopy

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M3 - Article

SN - 0949-8257

VL - 23

SP - 1119

EP - 1128

JO - Journal of Biological Inorganic Chemistry

JF - Journal of Biological Inorganic Chemistry

IS - 7

ER -

Emission of volatile halogenated compounds, speciation and localization of bromine and iodine in the brown algal genome model Ectocarpus siliculosus

Abstract

Bibliographical note

Keywords

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