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Cytosol in Biological Definition

Cytosol

... The cytosol (as opposed to cytoplasm , which also ... metabolism occurs here. Proteins within the cytosol play an important role in signal transduction ... take place in the cytosol. In eukaryotes , the cytosol contains the cell organelles . In plants, the ...

Signal transduction

... domain, then activate other proteins within the cytosol with its cytoplasmic domain, which the protein ... Availability of the hormone in the cytosol . Several hormones can be converted into a ... released from the endoplasmic reticulum into the cytosol . There are two combined receptor/ion channel ...

Mitochondrion

... means more mitochondria. Mitochondria can occupy up to 25% of the cell's cytosol . Mitochondria are sometimes described as " cellular power plants ", ... (glycolysis is performed outside the mitochondria, in the host cell's cytosol ). This metabolism can be performed in two very different ways, depending ...

Mitochondrion

... means more mitochondria. Mitochondria can occupy up to 25% of the cell's cytosol . Mitochondria are sometimes described as " cellular power plants ", ... (glycolysis is performed outside the mitochondria, in the host cell's cytosol ). This metabolism can be performed in two very different ways, depending ...

Peroxisome

... . They consist of a single membrane that separates them from the cytosol (the internal fluid of the cell). Peroxisomes were discovered by ... All of the enzymes found in a peroxisome are imported from the cytosol . Each enzyme transferred to a peroxisome has a special sequence at one ...

Second messenger

... molecules, like cAMP , cGMP , and Ca 2+ , that are located within the cytosol . gases, nitric oxide (NO) and carbon monoxide (CO), that can diffuse both through cytosol and across cellular membranes. These intracellular messengers have ...

Actin

... in contraction of the cell during cytokinesis . In muscle cells they play an essential role, along with myosin , in muscle contraction . In the cytosol , actin is predominantly bound to ATP , but can also bind to ADP . An ATP-actin complex polymerizes faster and dissociates slower than an ADP-actin ...

Adenosine triphosphate

... by photosynthesis . The main fuels for ATP synthesis are glucose and fatty acids . Initially glucose is broken down into pyruvate in the cytosol . Two molecules of ATP are generated for each molecule of glucose. The terminal stages of ATP synthesis are carried out in the mitochondrion and can ...

Apoptosis

... after SMAC (Second Mitochondria-derived Activator of Caspases, or its mouse homolog, called DIABLO), a mitochondrial protein, is released into the cytosol . SMAC binds to IAPs, and in doing so "inhibits the inhibitors", effectively preventing them from arresting the apoptotic process. But before we ...

Cytoplasm

... conditions and the activity phases of the cell. In the first case, it is named cytogel and is a viscid solid mass. In the second case, called cytosol , is a liquid in movement. In general, margin regions of the cell are gel-like and the cell's interior is liquid. The insoluble constituents of the ...

Disulfide bond

... . In eukaryotes In eukaryotic cells, disulfide bonds are formed in the lumen of the RER (rough endoplasmic reticulum) but not in the cytosol . Thus disulfide bonds are found only in secretory proteins, lysosomal proteins, and the exoplasmic domains of membrane proteins. Disulphide bonds ...

Endoplasmic reticulum

... membrane network of tubes and cisternae (sac-like structures). The membrane encloses a space, the cisternal space (or internal lumen) from the cytosol . This space is acting as a gateway. Parts of the ER membrane are continuous with the outer membrane of the nuclear envelope , and the cisternal ...

Glycolysis

... additional 34 molecules (approximately) of ATP for each glucose molecule oxidized. Location In eukaryotes glycolysis takes place within the cytosol of the cell (as opposed to the mitochondria , where reactions more closely connected to aerobic metabolism occur). Glucose gets into the cell ...

Intermediate filament

... size is intermediate between that of microfilaments and microtubules . They are assembled from several different proteins . IFs crisscross the cytosol from the nuclear envelope to the cell membrane . Contents showTocToggle("show","hide") 1 Types 1.1 Lamin IFs 1.2 ...

Intermembrane space

... membrane allow free movement of ions and small molecules into the intermembrane space. This means that it is essentially continuous with the cytosol in terms of solutes relevent for the functioning of these organelles . Enzymes destined for the mitochondrial matrix or the stroma can ...

Actin

... in contraction of the cell during cytokinesis . In muscle cells they play an essential role, along with myosin , in muscle contraction . In the cytosol , actin is predominantly bound to ATP , but can also bind to ADP . An ATP-actin complex polymerizes faster and dissociates slower than an ADP-actin ...

Nucleolus

... rRNA (plus associated proteins). Following synthesis, rRNA molecules are attached to proteins, forming ribosomal subunits, which leave for the cytosol through nuclear pores . Function: it creates ribosomes. ...

Organelle

... plastids nucleus peroxisome ribosome vacuole vesicle melanosome Other related structures: flagellum cytosol endomembrane system nucleosome microtubule cell membrane ...

Retrovirus

... into the host's genome. The virus itself is just a storage form for its nucleic acid genome; the reverse transcription takes place in the host's cytosol . The retroviral DNA, when integrated into the host's genome, is termed a provirus . While transcription was classically thought to only occur ...

Ribosome

... can associate on a single mRNA molecule to form a polyribosome or polysome . Free ribosomes usually produce proteins that are used in the cytosol or in the organelle they occur in. Membrane bound ribosomes When certain proteins are synthesized by a ribosome, it can become ...

Endoplasmic reticulum

... membrane network of tubes and cisternae (sac-like structures). The membrane encloses a space, the cisternal space (or internal lumen) from the cytosol . This space is acting as a gateway. Parts of the ER membrane are continuous with the outer membrane of the nuclear envelope , and the cisternal ...

Endoplasmic reticulum

... membrane network of tubes and cisternae (sac-like structures). The membrane encloses a space, the cisternal space (or internal lumen) from the cytosol . This space is acting as a gateway. Parts of the ER membrane are continuous with the outer membrane of the nuclear envelope , and the cisternal ...

Endoplasmic reticulum

... membrane network of tubes and cisternae (sac-like structures). The membrane encloses a space, the cisternal space (or internal lumen) from the cytosol . This space is acting as a gateway. Parts of the ER membrane are continuous with the outer membrane of the nuclear envelope , and the cisternal ...

Vesicle

... In cell biology , a vesicle is a relatively small and enclosed compartment, separated from the cytosol by at least one lipid bilayer . Vesicles store, transport , or digest cellular products and wastes . This biomembrane enclosing the ...

Xylem

... of pipes, rather than by diffusion through cells. Two phenomena cause xylem sap to flow: The soil solution (see soil ) is more dilute than the cytosol of the root cells. Thus, water moves osmotically into the cells, creating root pressure . Even under optimal conditions, root pressure can ...
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