Three-dimensional structure of system I of photosynthesis at 6 Å resolution

Norbert Krauss, Winfried Hinrichs, Ingrid Witt, Petra Fromme, Wolfgang Pritzkow, Zbigniew Dauter, Christian Betzel, Keith S. Wilson, Horst T. Witt, Wolfram Saenger

Research output: Contribution to journalArticlepeer-review

316 Scopus citations


X-ray structure analysis shows that the monomer of trimeric photosystem I (PS I) of Synechococcus sp. consists of a catalytic domain and a smaller domain that connects the monomers. The 4Fe-4S clusters FX,FA and FB, 28 α-helices and 45 chlorophyll a molecules were located. The two large subunits of PS I are represented by nine a-helices each; they are related by a local 2-fold rotation axis passing through Fx. Electron densities close to this axis are interpreted as carriers of the electron transfer chain.

Original languageEnglish (US)
Pages (from-to)326-331
Number of pages6
Issue number6410
StatePublished - 1993
Externally publishedYes

ASJC Scopus subject areas

  • General


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