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Full Description
The traditional view of biology divides living organisms into two major groups, the eukaryotes and the prokaryotes, the former having membrane-bound organelles, the latter lacking them. However, recent research has revealed that this view is blatantly in error. A surprising diversity of organelles occurs in bacteria. Even the prokaryotic workhorse, Escherichia coli, can produce intracellular membrane structures and bleb off extracellular vesicles. Photosynthetic bacteria have chromatophores which house the photosynthetic apparatus of the cell, while magnetotactic bacteria have magnetosomes that contain strings of membrane-enclosed iron crystals for sensing the Earth's magnetic field. Planctomycetes species may contain double membrane-surrounded nuclei as well as organelles called ammoxosomes for the oxidation of ammonia. Acidocalcisomes, once thought to be unique to eukaryotes, have also been identified in bacteria. Extracellular bacterial vesicles serve functions including communication and protection. The articles presented in this JMMB written symposium bring the reader up to date on research concerning these structures and functions.
Contents
Introduction; Membranous Organelles in Bacteria: Saier Jr., M.H.; Bogdanov, M.V.; Intracellular Membranes in Escherichia coli; Membrane Invaginations in Bacteria and Mitochondria: Common Features and Evolutionary Scenarios: Arechaga, I.; Subcellular Localization and Logistics of Integral Membrane Protein Biogenesis in Escherichia coli: Bogdanov, M.; Aboulwafa, M.; Saier Jr., M.H.; Chromatophores (Intracytoplasmic Membranes) in Photosynthetic Bacteria; The Intracytoplasmic Membranes of Purple Bacteria - Assembly of Energy-Transducing Complexes: Drews, G.; Structural and Functional Proteomics of Intracytoplasmic Membrane Assembly in Rhodobacter sphaeroides: Woronowicz, K.; Harrold, J.W.; Kay, J.M.; Niederman, R.A.; Magnetosomes in Magneto-Tactic Bacteria; The Bacterial Magnetosome: A Unique Prokaryotic Organelle: Lower, B.H.; Bazylinski, D.A.; Magnetosomes: How do They Stay in Shape?: Murat, D.; Unique Organelles in Planctomycetes; Nested Bacterial Boxes: Nuclear and Other Intracellular Compartments in Planctomycetes: Fuerst, J.A.; Sagulenko, E.; The Anammoxosome Organelle Is Crucial for the Energy Metabolism of Anaerobic Ammonium Oxidizing Bacteria: van Teeseling, M.C.F.; Neumann, S.; van Niftrik, L.; Outer Membrane Vesicles; Bacterial Outer Membrane Vesicles in Trafficking, Communication and the Host-Pathogen Interaction: Schertzer, J.W.; Whiteley, M.; Functional Advantages Conferred by Extracellular Prokaryotic Membrane Vesicles: Manning, A.J.; Kuehn, M.J.; The Role of Membrane Vesicles in Secretion of Lysobacter sp. Bacteriolytic Enzymes: Vasilyeva, N.V.; Tsfasman, I.M.; Kudryakova, I.V.; Suzina, N.E.; Shishkova, N.A.; Kulaev, I.S.; Stepnaya, O.A.; Acidocalcisomes and Organellar Evolution; The Coevolutionary Roots of Biochemistry and Cellular Organization Challenge the RNA World Paradigm: Caetano-Anolles, G.; Seufferheld, M.J.; Phylogenomics Supports a Cellularly Structured Urancestor: Seufferheld, M.J.; Caetano-Anolles, G.; Author Index/Subject Index.
