Phylogeny and evolution of the ribulose 1,5-bisphosphate carboxylase/oxygenase genes in prokaryotes |
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Authors: | T P Tourova E M Spiridonova |
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Institution: | (1) Biological Resources and Functions, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1, Higashi Tsukuba, Ibaraki 305-8566, Japan;(2) Faculty of Science, Shizuoka University, Oya 836, Shizuoka 422-8529, Japan;(3) Graduate School of Biosphere Science, Hiroshima University, 1-4-4 Kagamiyama, Higashi-hiroshima 739-8528, Japan; |
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Abstract: | The review considers the phylogeny and evolution of ribulose 1,5-bisphosphate carboxylase/oxygenase (RuBisCO), which is the
key enzyme of the autotrophic Calvin-Benson cycle and the most abundant protein on Earth. RuBisCO occurs in several structural
and functional forms, including fully functional forms I, II, and III, which catalyze carboxylation/oxygenation of ribulose
1,5-bisphosphate, and RuBisCO-like form IV, which lacks carboxylating activity. The genomic localization, operon structure,
and copy number of the RuBisCO genes vary among different autotrophic organisms. The RuBisCO gene phylogeny substantially
differs from the phylogeny of other conserved genes, including the 16S rRNA gene. The difference is due to duplication/deletion
and horizontal gene transfer events that were common in the evolution of autotrophic organisms. |
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