Abstract
Most life forms on Earth are supported by solar energy harnessed by oxygenic photosynthesis. In eukaryotes, photosynthesis is achieved by large membrane-embedded supercomplexes, containing reaction centers and connected antennae. Here, we report the structure of the higher plant PSI-LHCI super-complex determined at 2.8 Å resolution. The structure includes 16 subunits and more than 200 prosthetic groups, which are mostly light harvesting pigments. The complete structures of the four LhcA subunits of LHCI include 52 chlorophyll a and 9 chlorophyll b molecules, as well as 10 carotenoids and 4 lipids. The structure of PSI-LHCI includes detailed protein pigments and pigment-pigment interactions, essential for the mechanism of excitation energy transfer and its modulation in one of nature’s most efficient photochemical machines.
| Original language | English (US) |
|---|---|
| Article number | e07433 |
| Journal | eLife |
| Volume | 4 |
| Issue number | JUNE2015 |
| DOIs | |
| State | Published - Jun 15 2015 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)
- Immunology and Microbiology(all)
- Medicine(all)
- Neuroscience(all)
Cite this
The structure of plant photosystem i super-complex at 2.8 Å resolution. / Mazor, Yuval; Borovikova, Anna; Nelson, Nathan.
In: eLife, Vol. 4, No. JUNE2015, e07433, 15.06.2015.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The structure of plant photosystem i super-complex at 2.8 Å resolution
AU - Mazor, Yuval
AU - Borovikova, Anna
AU - Nelson, Nathan
PY - 2015/6/15
Y1 - 2015/6/15
N2 - Most life forms on Earth are supported by solar energy harnessed by oxygenic photosynthesis. In eukaryotes, photosynthesis is achieved by large membrane-embedded supercomplexes, containing reaction centers and connected antennae. Here, we report the structure of the higher plant PSI-LHCI super-complex determined at 2.8 Å resolution. The structure includes 16 subunits and more than 200 prosthetic groups, which are mostly light harvesting pigments. The complete structures of the four LhcA subunits of LHCI include 52 chlorophyll a and 9 chlorophyll b molecules, as well as 10 carotenoids and 4 lipids. The structure of PSI-LHCI includes detailed protein pigments and pigment-pigment interactions, essential for the mechanism of excitation energy transfer and its modulation in one of nature’s most efficient photochemical machines.
AB - Most life forms on Earth are supported by solar energy harnessed by oxygenic photosynthesis. In eukaryotes, photosynthesis is achieved by large membrane-embedded supercomplexes, containing reaction centers and connected antennae. Here, we report the structure of the higher plant PSI-LHCI super-complex determined at 2.8 Å resolution. The structure includes 16 subunits and more than 200 prosthetic groups, which are mostly light harvesting pigments. The complete structures of the four LhcA subunits of LHCI include 52 chlorophyll a and 9 chlorophyll b molecules, as well as 10 carotenoids and 4 lipids. The structure of PSI-LHCI includes detailed protein pigments and pigment-pigment interactions, essential for the mechanism of excitation energy transfer and its modulation in one of nature’s most efficient photochemical machines.
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U2 - 10.7554/eLife.07433
DO - 10.7554/eLife.07433
M3 - Article
VL - 4
JO - eLife
JF - eLife
SN - 2050-084X
IS - JUNE2015
M1 - e07433
ER -