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The stress-induced ...
The stress-induced SCP/HLIP family of small light-harvesting-like proteins (ScpABCDE) protects Photosystem II from photoinhibitory damages in the cyanobacterium Synechocystis sp. PCC 6803
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- Tibiletti, Tania (författare)
- Umeå universitet,Kemiska institutionen,SC Synchrotron SOLEIL, AILES beamline, L’Orme des Merisiers Saint-Aubin, Gif-sur-Yvette, France
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Rehman, Ateeq Ur (författare)
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Vass, Imre (författare)
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- Funk, Christiane (författare)
- Umeå universitet,Kemiska institutionen
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(creator_code:org_t)
- 2017-08-09
- 2018
- Engelska.
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Ingår i: Photosynthesis Research. - : Springer. - 0166-8595 .- 1573-5079. ; 135:1–3, s. 103-114
- Relaterad länk:
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https://doi.org/10.1...
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https://umu.diva-por... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Small CAB-like proteins (SCPs) are single-helix light-harvesting-like proteins found in all organisms performing oxygenic photosynthesis. We investigated the effect of growth in moderate salt stress on these stress-induced proteins in the cyanobacterium Synechocystis sp. PCC 6803 depleted of Photosystem I (PSI), which expresses SCPs constitutively, and compared these cells with a PSI-less/ScpABCDE− mutant. SCPs, by stabilizing chlorophyll-binding proteins and Photosystem II (PSII) assembly, protect PSII from photoinhibitory damages, and in their absence electrons accumulate and will lead to ROS formation. The presence of 0.2 M NaCl in the growth medium increased the respiratory activity and other PSII electron sinks in the PSI-less/ScpABCDE− strain. We postulate that this salt-induced effect consumes the excess of PSII-generated electrons, reduces the pressure of the electron transport chain, and thereby prevents 1O2 production.
Ämnesord
- NATURVETENSKAP -- Biologi -- Biokemi och molekylärbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Biochemistry and Molecular Biology (hsv//eng)
Nyckelord
- Small CAB-like proteins (SCPs)
- Photosystem II photoinhibition
- Singlet oxygen
- Salt stress
- Terminal oxidases
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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