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Proteomic analysis ...
Proteomic analysis of highly purified prolamellar bodies reveals their significance in chloroplast development
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- Blomqvist, Lisa A., 1978 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för växt- och miljövetenskaper,Department of Plant and Environmental Sciences
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- Ryberg, Margareta, 1946 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för växt- och miljövetenskaper,Department of Plant and Environmental Sciences
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- Sundqvist, Christer, 1943 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för växt- och miljövetenskaper,Department of Plant and Environmental Sciences
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(creator_code:org_t)
- 2007-12-11
- 2008
- Engelska.
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Ingår i: Photosynthesis Research. - : Springer Science and Business Media LLC. - 0166-8595 .- 1573-5079. ; 96:1, s. 37-50
- Relaterad länk:
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https://gup.ub.gu.se...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The prolamellar body (PLB) proteome of dark-grown wheat leaves was characterized. PLBs are formed not only in etioplasts but also in chloroplasts in young developing leaves during the night, yet their function is not fully understood. Highly purified PLBs were prepared from 7-day-old dark-grown leaves and identified by their spectral properties as revealed by low-temperature fluorescence spectroscopy. The PLB preparation had no contamination of extra-plastidal proteins, and only two envelope proteins were found. The PLB proteome was analysed by a combination of 1-D SDS-PAGE and nano-LC FTICR MS. The identification of chlorophyll synthase in the PLB fraction is the first time this enzyme protein was found in extracts of dark-grown plants. This finding is in agreement with its previous localization to PLBs using activity studies. NADPH:protochlorophyllide oxidoreductase A (PORA), which catalyses the reduction of protochlorophyllide to chlorophyllide, dominates the proteome of PLBs. Besides the identification of the PORA protein, the PORB protein was identified for the first time in dark-grown wheat. Altogether 64 unique proteins, representing pigment biosynthesis, photosynthetic light reaction, Calvin cycle proteins, chaperones and protein synthesis, were identified. The in number of proteins' largest group was the one involved in photosynthetic light reactions. This fact strengthens the assumption that the PLB membranes are precursors to the thylakoids and used for the formation of the photosynthetic membranes during greening. The present work is important to enhance our understanding of the significance of PLBs in chloroplast development.
Ämnesord
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
Nyckelord
- chlorophyll synthase
- chloroplast development
- etioplast
- NADPH
- protochlorophyllide oxidoreductase
- prolamellar body
- NADPH-PROTOCHLOROPHYLLIDE OXIDOREDUCTASE
- WHEAT TRITICUM AESTIVUM
- PEA
- PISUM SATIVUM
- ARABIDOPSIS THALIANA CHLOROPLASTS
- THYLAKOID MEMBRANE
- PROTEOME
- II REACTION-CENTER
- DARK-GROWN WHEAT
- CHLOROPHYLL SYNTHETASE
- ENVELOPE MEMBRANES
- 2-DIMENSIONAL ELECTROPHORESIS
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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