The eighth bacteriochlorophyll completes the excitation energy funnel in the FMO protein

Marcel Schmidt Am Busch, Frank Müh, Mohamed Madjet, Thomas Renger

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140 Citations (Scopus)


The Fenna-Matthews-Olson (FMO) light-harvesting protein connects the outer antenna system (chlorosome/baseplate) with the reaction center complex in green sulfur bacteria. Since its first structure determination in the mid-70s, this pigment-protein complex has become an important model system to study excitation energy transfer. Recently, an additional bacteriochlorophyll a (the eighth) pigment was discovered in each subunit of this homotrimer. Our structure-based calculations of the optical properties of the FMO protein demonstrate that the eighth pigment is the linker to the baseplate, confirming recent suggestions from crystallographic studies.

Original languageEnglish
Pages (from-to)93-98
Number of pages6
JournalJournal of Physical Chemistry Letters
Issue number2
Publication statusPublished - 20 Jan 2011
Externally publishedYes



  • Biophysical Chemistry

ASJC Scopus subject areas

  • Materials Science(all)

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