CO2 fixation in tissues of marine oligochaetes (Phallodrilus leukodermatus and P. planus) containing symbiotic, chemoautotrophic bacteria

1983 ◽  
Vol 75 (2-3) ◽  
pp. 187-191 ◽  
Author(s):  
H. Felbeck ◽  
G. Liebezeit ◽  
R. Dawson ◽  
O. Giere
Keyword(s):  
Co2 Fixation ◽  
Marine Oligochaetes ◽  
Chemoautotrophic Bacteria

Self-assembly in the carboxysome: a viral capsid-like protein shell in bacterial cells

2007 ◽  
Vol 35 (3) ◽  
pp. 508-511 ◽  
Author(s):  
T.O. Yeates ◽  
Y. Tsai ◽  
S. Tanaka ◽  
M.R. Sawaya ◽  
C.A. Kerfeld
Keyword(s):  
Self Assembly ◽  
Co2 Fixation ◽  
Closed Shell ◽  
Bacterial Cells ◽  
Protein Assemblies ◽  
Bisphosphate Carboxylase ◽  
Viral Capsids ◽  
Chemoautotrophic Bacteria ◽  
Assembly Principles ◽  
Protein Shell

Many proteins self-assemble to form large supramolecular complexes. Numerous examples of these structures have been characterized, ranging from spherical viruses to tubular protein assemblies. Some new kinds of supramolecular structures are just coming to light, while it is likely there are others that have not yet been discovered. The carboxysome is a subcellular structure that has been known for more than 40 years, but whose structural and functional details are just now emerging. This giant polyhedral body is constructed as a closed shell assembled from several thousand protein subunits. Within this protein shell, the carboxysome encapsulates the CO2-fixing enzymes, Rubisco (ribulose-1,5-bisphosphate carboxylase/oxygenase) and carbonic anhydrase; this arrangement enhances the efficiency of cellular CO2 fixation. The carboxysome is present in many photosynthetic and chemoautotrophic bacteria, and so plays an important role in the global carbon cycle. It also serves as the prototypical member of what appears to be a large class of primitive protein-based organelles in bacteria. A series of crystal structures is beginning to reveal the secrets of how the carboxysome is assembled and how it enhances the efficiency of CO2 fixation. Some of the assembly principles revealed in the carboxysome are reminiscent of those seen in icosahedral viral capsids. In addition, the shell appears to be perforated by pores for metabolite transport into and out of the carboxysome, suggesting comparisons to the pores through oligomeric transmembrane proteins, which serve to transport small molecules across the membrane bilayers of cells and eukaryotic organelles.

Review on the production of medium and small chain fatty acids through waste valorization and CO2 fixation

2020 ◽  
Vol 309 ◽  
pp. 123400 ◽  
Author(s):  
M. Venkateswar Reddy ◽  
Gopalakrishnan Kumar ◽  
Gunda Mohanakrishna ◽  
Sutha Shobana ◽  
Riyadh I. Al-Raoush
Keyword(s):  
Fatty Acids ◽  
Co2 Fixation ◽  
Waste Valorization ◽  
Small Chain ◽  
Chain Fatty Acids

Design and synthesis of a new magnetic metal organic framework as a versatile platform for immobilization of acidic catalysts and CO2 fixation reaction

2021 ◽  
Author(s):  
Faezeh Taghavi ◽  
Amir Khojastehnezhad ◽  
Reza Khalifeh ◽  
Maryam Rajabzadeh ◽  
Fahimeh Rezaei ◽  
...  
Keyword(s):  
Co2 Fixation ◽  
Metal Organic Framework ◽  
Environmentally Friendly ◽  
Chemical Fixation ◽  
Design And Synthesis ◽  
Acidic Catalysts ◽  
Magnetic Metal ◽  
Metal Organic ◽  
Fixation Reaction ◽  
Organic Framework

The first report of the use of an acidic magnetic metal organic framework for the chemical fixation of CO2 as an environmentally friendly reaction.

scholarly journals Doubling the Carbonate-Binding Capacity of Nanojars by the Formation of Expanded Nanojars

Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3083
Author(s):  
Wisam A. Al Isawi ◽  
Gellert Mezei
Keyword(s):  
Co2 Fixation ◽  
Binding Capacity ◽  
Coordination Complexes ◽  
Anion Binding ◽  
Ionization Mass ◽  
X Ray ◽  
Carbonate Ion ◽  
Carbonate Ions ◽  
Supramolecular Coordination ◽  
Hydration Energies

Anion binding and extraction from solutions is currently a dynamic research topic in the field of supramolecular chemistry. A particularly challenging task is the extraction of anions with large hydration energies, such as the carbonate ion. Carbonate-binding complexes are also receiving increased interest due to their relevance to atmospheric CO2 fixation. Nanojars are a class of self-assembled, supramolecular coordination complexes that have been shown to bind highly hydrophilic anions and to extract even the most hydrophilic ones, including carbonate, from water into aliphatic solvents. Here we present an expanded nanojar that is able to bind two carbonate ions, thus doubling the previously reported carbonate-binding capacity of nanojars. The new nanojar is characterized by detailed single-crystal X-ray crystallographic studies in the solid state and electrospray ionization mass spectrometric (including tandem MS/MS) studies in solution.

Polybenzoxazine intrinsically installed N-methylpyridinium iodide functions efficient organocatalyst for CO2 fixation into cyclic carbonate

2021 ◽  
Vol 149 ◽  
pp. 110397
Author(s):  
Tianfo Guo ◽  
Yongqiang Li ◽  
Zhenjiang Li ◽  
Haoying Tong ◽  
Luoyu Gao ◽  
...  
Keyword(s):  
Co2 Fixation ◽  
Cyclic Carbonate
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