Protein translocation and thylakoid biogenesis in cyanobacteria
| Autor: | Alexander S. Jones, Julie A. Z. Zedler, Doris Gangl, Colin Robinson, Kelly M. Frain |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
0301 basic medicine Vesicle-associated membrane protein 8 Biophysics Biology Cyanobacteria medicine.disease_cause Thylakoids environment and public health 01 natural sciences Biochemistry Twin-arginine translocation pathway 03 medical and health sciences Bacterial Proteins Protein targeting medicine food and beverages Cell Biology Cell biology Transport protein Protein Transport 030104 developmental biology Membrane protein Thylakoid Membrane biogenesis 010606 plant biology & botany Chloroplast thylakoid membrane |
| Zdroj: | Biochimica et Biophysica Acta (BBA) - Bioenergetics. 1857:266-273 |
| ISSN: | 0005-2728 |
| DOI: | 10.1016/j.bbabio.2015.08.010 |
| Popis: | Cyanobacteria exhibit a complex form of membrane differentiation that sets them apart from most bacteria. Many processes take place in the plasma membrane, but photosynthetic light capture, electron transport and ATP synthesis take place in an abundant internal thylakoid membrane. This review considers how this system of subcellular compartmentalisation is maintained, and how proteins are directed towards the various subcompartments--specifically the plasma membrane, periplasm, thylakoid membrane and thylakoid lumen. The involvement of Sec-, Tat- and signal recognition particle- (SRP)-dependent protein targeting pathways is discussed, together with the possible involvement of a so-called 'spontaneous' pathway for the insertion of membrane proteins, previously characterised for chloroplast thylakoid membrane proteins. An intriguing aspect of cyanobacterial cell biology is that most contain only a single set of genes encoding Sec, Tat and SRP components, yet the proteomes of the plasma and thylakoid membranes are very different. The implications for protein sorting mechanisms are considered. This article is part of a Special Issue entitled Organization and dynamics of bioenergetic systems in bacteria, edited by Prof Conrad Mullineaux. |
| Databáze: | OpenAIRE |
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