bacterial intracellular energy storage

Release of extracellular ATP by bacteria during growth | BMC …

Background Adenosine triphosphate (ATP) is used as an intracellular energy source by all living organisms. It plays a central role in the respiration and metabolism, and is the most important energy supplier in many enzymatic reactions. Its critical role as the energy storage molecule makes it extremely valuable to all cells. …

Storage of Hydrophobic Polymers in Bacteria | SpringerLink

Intracellular storage of hydrophobic compounds in bacteria has been widely known for decades. The accumulation of storage reserves is widely spread in nature and found in numerous species of Bacteria. Among the different compounds stored, the most common and important are carbohydrates and lipids. Until some decades ago, …

Persistence of Intracellular Bacterial Pathogens—With a Focus …

Bacterial Survival Strategies Bacteria have evolved several strategies by which subpopulations are able to survive life-threatening conditions that are lethal for most members of bacterial populations. The best characterized strategies are: (a) formation of endospores (Higgins and Dworkin, 2012; Hutchison et al., 2014; Moir and Cooper, 2015), …

Bacterial polyhydroxyalkanoates

Polyhydroxyalkanoates (PHAs) are polyesters of hydroxyalkanoates (HAs) synthesized by numerous bacteria as intracellular carbon and energy storage compounds and accumulated as granules in the cytoplasm of cells. More than 80 HAs have been detected as constituents of PHAs, which allows these thermoplastic materials to have …

3.3 Unique Characteristics of Prokaryotic Cells

These structures are described in more detail in the next section. Figure 3.33. A typical prokaryotic cell contains a cell membrane, chromosomal DNA that is concentrated in a nucleoid, ribosomes, and a cell wall. Some prokaryotic cells may also possess flagella, pili, fimbriae, and capsules.

Iron assimilation and utilization in anaerobic ammonium oxidizing bacteria

Anammox bacteria are anaerobic Gram-negative microorganisms within the phylum of Planctomycetes, and have a compartmentalized cell plan addition to the peptidoglycan-containing cell wall [12 •] and the cytoplasmic membrane, they possess a third and innermost membrane that defines the anammoxosome, a unique energy-converting …

Mitochondria: It is all about energy

2.1 ATP energy production. Figure 2 Cells require a constant supply of energy to generate and maintain the biological organization that keeps them alive and functioning. Adenosine triphosphate (ATP) is the source of energy for most cellular processes (Pinna et al., 2022).Mitochondria are the main energy production sites, …

Frontiers | Intracellular Storage Reduces Stoichiometric Imbalances in Soil Microbial …

Microbial intracellular storage is key to defining microbial resource use strategies and could contribute to carbon (C) and nutrient cycling. However, little attention has been devoted to the role of intracellular storage in soil processes, in particular from a theoretical perspective.

Frontiers | Intracellular Storage Reduces Stoichiometric Imbalances in Soil Microbial …

Microbial intracellular storage is key to defining microbial resource use strategies and could contribute to carbon (C) and nutrient cycling. However, little... The active microbial biomass takes up organic C from the substrate at a rate U C S (first order kinetics with rate constant k S, suitable for uptake of labile compounds at less than …

Lipid droplet functions beyond energy storage

1.0 Introduction. Lipid droplets (LDs) are intracellular organelles specialized for the storage of energy in the form of neutral lipids such as triglycerides and sterol esters. They are ubiquitous organelles, present in animals, plants, fungi, and even bacteria [ 1, 2 ]. LDs comprise a core of neutral lipids surrounded by a polar lipid ...

[PDF] Intracellular storage: implications for microbial growth, …

Storage of resources like carbon and energy plays a central role in the lives of all organisms and alters their ecological interactions. Some soil-derived bacteria can accumulate intracellular carbon in the form of polyhydroxybutyrate (PHB) to as much as 50% of their dry biomass, while the accumulation of triacylglycerides (TAG) is well known in …

Iron assimilation and utilization in anaerobic ammonium oxidizing bacteria …

Anammox bacteria are anaerobic Gram-negative microorganisms within the phylum of Planctomycetes, and have a compartmentalized cell plan addition to the peptidoglycan-containing cell wall [12 •] and the cytoplasmic membrane, they possess a third and innermost membrane that defines the anammoxosome, a unique energy-converting …

Intracellular glycogen accumulation by human gut commensals …

In this regard, intracellular glycogen accumulation has been associated with important physiological functions in several bacterial species, including gut commensals. However, the role of glycogen storage in shaping the composition and functionality of the gut microbiota offers a novel perspective in gut microbiome research.

Inorganic Polyphosphates As Storage for and Generator of Metabolic Energy …

The intracellular, enzyme-driven polyP anabolism and catabolism, especially with respect to the energy metabolism, is well understood in bacteria. In the center of the bacterial energy transfer reactions are the polyphosphate kinases (PPKs), (26,194) which synthesize polyP by using ATP as a substrate (194) ( Figure 6 ).

Release of extracellular ATP by bacteria during growth

The levels of the extracellular ATP in bacterial cultures peaked around the end of the log phase and decreased in the stationary phase of growth. Extracellular ATP levels were dependent on the cellular respiration as bacterial mutants lacking cytochrome bo oxidase displayed lower extracellular ATP levels. We have also shown that …

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