Plant organelle proteomics
... subcellular locations. The tonoplast has been subject of many plant subcellular localization studies, because of the importance of the tonoplast in plant cell metabolism and the enigmatic identity of many of the membrane transport proteins. Several vacuole proteomic studies have been attempted and y ...
... subcellular locations. The tonoplast has been subject of many plant subcellular localization studies, because of the importance of the tonoplast in plant cell metabolism and the enigmatic identity of many of the membrane transport proteins. Several vacuole proteomic studies have been attempted and y ...
Full Text - Molecular Biology and Evolution
... This dramatic reduction in the conservation of membrane proteins is widespread across the entire tree of life, but the effect decreases as cellular or organismal complexity increases. Water-soluble proteins have on average 2.7 times more orthologs than membrane proteins in prokaryotes. The factor de ...
... This dramatic reduction in the conservation of membrane proteins is widespread across the entire tree of life, but the effect decreases as cellular or organismal complexity increases. Water-soluble proteins have on average 2.7 times more orthologs than membrane proteins in prokaryotes. The factor de ...
Understanding the role of cholesterol in cellular biomechanics and
... Membrane rafts, due to its protein and lipid composition, compartmentalize a lot of important cell functions [92]. They have been shown to work as platforms involved with signaling in diverse cellular processes, such as immune regulation, cytoskeleton reorganization, cell cycle control, as well as m ...
... Membrane rafts, due to its protein and lipid composition, compartmentalize a lot of important cell functions [92]. They have been shown to work as platforms involved with signaling in diverse cellular processes, such as immune regulation, cytoskeleton reorganization, cell cycle control, as well as m ...
Lecture 6 (ADP/ATP carrier) []
... integral membrane proteins called porins, which feature relatively large internal channels (about 2-3 nm) that are permeable to molecules of ~5,000 Da or less. In contrast, larger molecules, for example most proteins, can only traverse the outer membrane by active transport. ...
... integral membrane proteins called porins, which feature relatively large internal channels (about 2-3 nm) that are permeable to molecules of ~5,000 Da or less. In contrast, larger molecules, for example most proteins, can only traverse the outer membrane by active transport. ...
Plasma membrane of Beta vulgaris storage root shows high water
... pCa 4). Since the normal cytoplasmic free Ca21 sits between these ranges it allows for the possibility of changes in Ca21 to finely up- or down-regulate water channel activity. The calcium effect is predominantly on the cytoplasmic face, and inhibition corresponds to ...
... pCa 4). Since the normal cytoplasmic free Ca21 sits between these ranges it allows for the possibility of changes in Ca21 to finely up- or down-regulate water channel activity. The calcium effect is predominantly on the cytoplasmic face, and inhibition corresponds to ...
GYP5 - Genetics
... Rvs167p was coimmunoprecipitated with α-myc in cells expressing GYL1-myc (Figure 1C, lane 6) or GYP5-myc (Figure 1C, lane 8) but not in an untagged strain (Figure 1C, lane 4) nor in an rvs167∆ strain (Figure 1C, lane 2). Interactions between Rvs167p and both Gyp5p and Gyl1p have been detected previo ...
... Rvs167p was coimmunoprecipitated with α-myc in cells expressing GYL1-myc (Figure 1C, lane 6) or GYP5-myc (Figure 1C, lane 8) but not in an untagged strain (Figure 1C, lane 4) nor in an rvs167∆ strain (Figure 1C, lane 2). Interactions between Rvs167p and both Gyp5p and Gyl1p have been detected previo ...
Plant Cell Vacuoles
... studies indicate that a separate channel is involved in the export of organic acids. Furthermore, inorganic anions such as chloride and nitrate most probably use a different transport system. In the case of nitrate it must be postulated that an additional force is driving its vacuolar uptake, since t ...
... studies indicate that a separate channel is involved in the export of organic acids. Furthermore, inorganic anions such as chloride and nitrate most probably use a different transport system. In the case of nitrate it must be postulated that an additional force is driving its vacuolar uptake, since t ...
The K-Segment of Maize DHN1 Mediates Binding
... (Wright and Dyson, 1999; Garay-Arroyo et al., 2000; Tompa, 2005; Kovacs et al., 2008). On the basis of compositional and biophysical properties and their link to abiotic stresses, several functions of DHNs have been proposed, including ion sequestration (Roberts et al., 1993), water retention (McCub ...
... (Wright and Dyson, 1999; Garay-Arroyo et al., 2000; Tompa, 2005; Kovacs et al., 2008). On the basis of compositional and biophysical properties and their link to abiotic stresses, several functions of DHNs have been proposed, including ion sequestration (Roberts et al., 1993), water retention (McCub ...
29. protein targeting and degradation
... of the ER. On the contrary, other proteins must form part of a membrane. Such proteins, in the lumen of the ER, are modified in several ways. Besides the removal of signal sequences, polypeptide chains fold and disulfide bonds form. Many proteins are also glycosylated. As a result of about 20 years ...
... of the ER. On the contrary, other proteins must form part of a membrane. Such proteins, in the lumen of the ER, are modified in several ways. Besides the removal of signal sequences, polypeptide chains fold and disulfide bonds form. Many proteins are also glycosylated. As a result of about 20 years ...
Lipid Rafts Presentation
... Korade, Zeljka. "Lipid rafts, cholesterol, and the brain." Neuropharmacology 55 (2008): 1265-273. Luckey, Mary. Membrane Structural Biology : With Biochemical and Biophysical Foundations. New York: ...
... Korade, Zeljka. "Lipid rafts, cholesterol, and the brain." Neuropharmacology 55 (2008): 1265-273. Luckey, Mary. Membrane Structural Biology : With Biochemical and Biophysical Foundations. New York: ...
Electron Transport Chain (Respiratory Chain)
... b) can proceed under both aerobic and anaerobic conditions c) is a reversible pathway d) needs oxygen (O2) for its function ...
... b) can proceed under both aerobic and anaerobic conditions c) is a reversible pathway d) needs oxygen (O2) for its function ...
6 Lipids, Membranes, and the First Cells 1
... hydrophilic heads of phospholipids face the water and the hydrophobic tails are forced together, away from the water. Lipids with compact tails tend to form micelles. Because their double-chain tails are often too bulky to fit in the interior of a micelle, most phospholipids tend to form bilayers. P ...
... hydrophilic heads of phospholipids face the water and the hydrophobic tails are forced together, away from the water. Lipids with compact tails tend to form micelles. Because their double-chain tails are often too bulky to fit in the interior of a micelle, most phospholipids tend to form bilayers. P ...
Impaired intracellular trafficking defines early Parkinson`s disease
... are homozygous for mutations in GBA. A subset of patients suffering Gaucher’s disease exhibit parkinsonian symptoms. Patients who are GBA mutation heterozygotes have an increased risk of developing PD. iPSCs: mutipotential cells derived from differentiated adult cells that can be manipulated to prod ...
... are homozygous for mutations in GBA. A subset of patients suffering Gaucher’s disease exhibit parkinsonian symptoms. Patients who are GBA mutation heterozygotes have an increased risk of developing PD. iPSCs: mutipotential cells derived from differentiated adult cells that can be manipulated to prod ...
PROTEIN-LIPID INTERPLAY IN FUSION AND FISSION OF
... dashed lines). Although a surface bending is characterized by two principal curvatures (Figure 2D), in practice one uses their combinations, called the total curvature, J ⫽ c1 ⫹ c2, and the Gaussian curvature, K ⫽ c1 䡠 c2, which have a profound geometrical meaning. For mathematical reasons, the Gaus ...
... dashed lines). Although a surface bending is characterized by two principal curvatures (Figure 2D), in practice one uses their combinations, called the total curvature, J ⫽ c1 ⫹ c2, and the Gaussian curvature, K ⫽ c1 䡠 c2, which have a profound geometrical meaning. For mathematical reasons, the Gaus ...
Targeting of Rough Endoplasmic Reticulum Membrane Proteins and
... RER composition has been best studied in liver tissue, where the two types of membranes can be separated by biochemical fractionation. Subsequent analysis of their enzyme activities and protein composition indicated that most proteins present in one domain are also found in the other (Depierre and D ...
... RER composition has been best studied in liver tissue, where the two types of membranes can be separated by biochemical fractionation. Subsequent analysis of their enzyme activities and protein composition indicated that most proteins present in one domain are also found in the other (Depierre and D ...
Campbell Biology, 10e (Reece) Chapter 7 Membrane Structure and
... left in a 0.15 M salt solution become limp. From this we can deduce that the fresh water_____. A) and the salt solution are both hypertonic to the cells of the celery stalks B) is hypotonic and the salt solution is hypertonic to the cells of the celery stalks C) is hypertonic and the salt solution i ...
... left in a 0.15 M salt solution become limp. From this we can deduce that the fresh water_____. A) and the salt solution are both hypertonic to the cells of the celery stalks B) is hypotonic and the salt solution is hypertonic to the cells of the celery stalks C) is hypertonic and the salt solution i ...
facilitated diffusion
... Diffusion (how fast diffusion occurs) Surface area to volume ratio (size of cell) ...
... Diffusion (how fast diffusion occurs) Surface area to volume ratio (size of cell) ...
Lecture12 PPT
... 1. The differential permeability of the membrane to the ions. The membrane contains ion channels that allow ions to pass through the membrane. The membrane is most permeable to K+ and Cl-, and last permeable to negatively charged protein ions. 2. The action of sodium-potassium pumps. These pumps con ...
... 1. The differential permeability of the membrane to the ions. The membrane contains ion channels that allow ions to pass through the membrane. The membrane is most permeable to K+ and Cl-, and last permeable to negatively charged protein ions. 2. The action of sodium-potassium pumps. These pumps con ...
... neurotransmitters are packaged in synaptic vesicles (SVs), which are clustered at active zones. Neuropeptides are packaged into large dense core vesicles (DCVs), and are distributed throughout axons and dendrites. Secretion of SVs occurs at active zones, in a rapid, phasic manner. Secretion of DCVs ...
Structure, function and mechanism of G
... The EHD family • EHD = Eps15 homology domain containing protein ...
... The EHD family • EHD = Eps15 homology domain containing protein ...
A cellular backline: specialization of host membranes for defence
... Most plant pathogens infect tissues via an extracellular route. Thus, the cell wall and plasma membrane act as key defence fronts during an attempted pathogen invasion. Pattern recognition receptors (PRRs) that detect the presence of a pathogen threat via pathogen-associated molecular patterns (PAMP ...
... Most plant pathogens infect tissues via an extracellular route. Thus, the cell wall and plasma membrane act as key defence fronts during an attempted pathogen invasion. Pattern recognition receptors (PRRs) that detect the presence of a pathogen threat via pathogen-associated molecular patterns (PAMP ...
Neurons and the Nervous System
... • Action potentials travel in only one direction: toward the synaptic terminals ...
... • Action potentials travel in only one direction: toward the synaptic terminals ...
Allergen-Sensitization Increases Mast
... in allergic and inflammatory reactions. In allergy, the binding of immunoglobulin (Ig) E to its high-affinity receptor (FcεRI) sensitizes MCs. Subsequent cross-linking of IgE-FcεRI by multivalent antigens results in activation of the MCs and the release of mediators responsible for allergic inflamma ...
... in allergic and inflammatory reactions. In allergy, the binding of immunoglobulin (Ig) E to its high-affinity receptor (FcεRI) sensitizes MCs. Subsequent cross-linking of IgE-FcεRI by multivalent antigens results in activation of the MCs and the release of mediators responsible for allergic inflamma ...
SNARE (protein)
SNARE proteins (an acronym derived from ""SNAP (Soluble NSF Attachment Protein) REceptor"") are a large protein superfamily consisting of more than 60 members in yeast and mammalian cells. The primary role of SNARE proteins is to mediate vesicle fusion, that is, the fusion of vesicles with their target membrane bound compartments (such as a lysosome). The best studied SNAREs are those that mediate docking of synaptic vesicles with the presynaptic membrane in neurons. These SNAREs are the targets of the bacterial neurotoxins responsible for botulism and tetanus.