Photosynthesis Research

, Volume 51, Issue 1, pp 27–42

On the origin of photosynthesis as inferred from sequence analysis

  • Armen Y. Mulkidjanian
  • Wolfgang Junge

DOI: 10.1023/A:1005726809084

Cite this article as:
Mulkidjanian, A.Y. & Junge, W. Photosynthesis Research (1997) 51: 27. doi:10.1023/A:1005726809084


Sequence alignments between membrane-spanning segments of pheophytin-quinone-type photosynthetic reaction centers, FeS-type photosynthetic reaction centers, core chlorophyll-proteins of PS II, chlorophyll t a/t b-containing antenna proteins of plants and light-harvesting complexes of purple bacteria led us to postulate a large common ancestral pigment-carrying protein with more than 10 membrane spans. Its original function as a UV-protector of the primordial cell is discussed. It is conceivable that a purely dissipative photochemistry started still in the context of the UV-protection. We suggest that mutations causing the t loss of certain porphyrin-type pigments led to the acquisition of redox cofactors and paved the way for a gradual transition from dissipative to productive photochemistry.

Photosystem I Photosystem II photosynthetic reaction center bacteriorhodopsin evolution UV-protection t Rhodopseudomonasviridis t Heliobacillus mobilis 

Copyright information

© Kluwer Academic Publishers 1997

Authors and Affiliations

  • Armen Y. Mulkidjanian
    • 1
    • 2
  • Wolfgang Junge
    • 1
  1. 1.Division of Biophysics, Faculty of Biology/ChemistryUniversity of OsnabrückOsnabrückGermany
  2. 2.A.N. Belozersky Institute of Physico-Chemical BiologyMoscow State UniversityMoscowRussia

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