ArticlePlant molecular biology2002
The Slr0924 protein of Synechocystis sp. strain PCC 6803 resembles a subunit of the chloroplast protein import complex and is mainly localized in the thylakoid lumen.
Article in Plant molecular biology, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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7 citing papers in PubMed, 28 citations in OpenAlex.
- Spatial proteomics reveals signal sequence characteristics correlated with localization in cyanobacteria.Plant physiology · 2025Article
- Proximity-based proteomics reveals the thylakoid lumen proteome in the cyanobacterium Synechococcus sp. PCC 7002.Photosynthesis research · 2021Article
- Structure and conservation of the periplasmic targeting factor Tic22 protein from plants and cyanobacteria.The Journal of biological chemistry · 2012Article
- Cell surface-associated proteins in the filamentous cyanobacterium Anabaena sp. strain PCC 7120.Microbes and environments · 2012Article
- Metabolome phenotyping of inorganic carbon limitation in cells of the wild type and photorespiratory mutants of the cyanobacterium Synechocystis sp. strain PCC 6803.Plant physiology · 2008Article
- Tic62: a protein family from metabolism to protein translocation.BMC evolutionary biology · 2007Article
- Comparative genomics of NAD biosynthesis in cyanobacteria.Journal of bacteriology · 2006Article
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4 authors at 3 institutions in 2 countries.
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Abstract
An isolated 25 kDa protein of Synechocystis sp. PCC 6803 was N-terminally sequenced and assigned to a protein encoded by the ORF slr0924. This ORF shows a certain degree of sequence similarity to a subunit from the protein Translocon at the Inner envelope of pea Chloroplasts (Tic22). The deduced amino acid sequence of Slr0924 has a N-terminal extension, that contains two possible translational start points and two possible cleavage sites for leader peptidases. Immunostaining with an antibody raised to the over-produced protein revealed two cross-reacting forms, which probably correspond to a larger intermediate and the mature protein. Immunogold labelling of thin sections showed that the protein is located mainly in the thylakoid region. This result was verified by thylakoid membrane fractionation indicating that Slr0924 is a lumenal protein. The slr0924 gene product is essential for the viability of Synechocystis sp. PCC 6803 as shown by interposon mutagenesis. The merodiploid strain showed reduced photosynthetic activity compared to the wild-type. Furthermore, growth of the merodiploid strain was found to be completely inhibited after cultivation with glucose. Accordingly, the amount of the slr0924 gene product was regulated by glucose and light intensities in wild-type cells. The potential function of the protein in Synechocystis sp. PCC 6803 will be discussed.
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