Studies of Energy-Yielding Reactions in Thymus Nuclei. 1
... triphosphate by an aerobic process that differs from oxidative phosphorylation in mitochondria in its insensitivity to calcium ions and methylene blue. Subsequent studies showed that nuclear adenosine triphosphate synthesis comes to a halt when nuclei are treated with deoxyribonuclease, but resumes ...
... triphosphate by an aerobic process that differs from oxidative phosphorylation in mitochondria in its insensitivity to calcium ions and methylene blue. Subsequent studies showed that nuclear adenosine triphosphate synthesis comes to a halt when nuclei are treated with deoxyribonuclease, but resumes ...
Bacterial Filament Systems: Toward Understanding Their Emergent
... the membrane. Together, these activities cause all three components to oscillate between cell poles, creating a time-averaged minimum of MinC at mid-cell (53). Reconstitutions of MinCDE and FtsZ in three-dimensional cell-shaped compartments demonstrated that MinCDE together form a time-averaged bipo ...
... the membrane. Together, these activities cause all three components to oscillate between cell poles, creating a time-averaged minimum of MinC at mid-cell (53). Reconstitutions of MinCDE and FtsZ in three-dimensional cell-shaped compartments demonstrated that MinCDE together form a time-averaged bipo ...
the Cell
... – Receptors for external signals trigger processes within the cell – The latter two are transmembrane proteins © 2012 Pearson Education, Inc. ...
... – Receptors for external signals trigger processes within the cell – The latter two are transmembrane proteins © 2012 Pearson Education, Inc. ...
A Dominant Negative Mutant of Cyclin-Dependent
... 1985; Dilkes et al., 2002). Coincidentally, these cells become enlarged and begin to accumulate starch and storage proteins (Lopes and Larkins, 1993). Accumulation of storage metabolites continues until 40 to 45 DAP, but beginning around 20 DAP, the large central starchy endosperm cells begin to und ...
... 1985; Dilkes et al., 2002). Coincidentally, these cells become enlarged and begin to accumulate starch and storage proteins (Lopes and Larkins, 1993). Accumulation of storage metabolites continues until 40 to 45 DAP, but beginning around 20 DAP, the large central starchy endosperm cells begin to und ...
Cell Structure and Functions
... 1. The invention of the microscope made it possible for people to discover a. plants. b. skin. c. animals. d. cells. 2. Which of the following statements is part of the cell theory? a. Only plants are composed of cells. b. All cells are produced from other cells. c. Cells can be produced from nonliv ...
... 1. The invention of the microscope made it possible for people to discover a. plants. b. skin. c. animals. d. cells. 2. Which of the following statements is part of the cell theory? a. Only plants are composed of cells. b. All cells are produced from other cells. c. Cells can be produced from nonliv ...
124
... 2. Identify the facial artery and its main branches and the facial vein. Indicate the features that differentiates the artery from the vein in the ...
... 2. Identify the facial artery and its main branches and the facial vein. Indicate the features that differentiates the artery from the vein in the ...
Vesicle Trafficking during Somatic Cytokinesis
... close association of vesicles with the phragmoplast microtubules (Kakimoto and Shibaoka, 1987; Samuels et al., 1995), the integrity of which is essential for cell plate vesicle delivery (Steinborn et al., 2002). Proteins connecting vesicles to phragmoplast microtubules have been visualized during en ...
... close association of vesicles with the phragmoplast microtubules (Kakimoto and Shibaoka, 1987; Samuels et al., 1995), the integrity of which is essential for cell plate vesicle delivery (Steinborn et al., 2002). Proteins connecting vesicles to phragmoplast microtubules have been visualized during en ...
Coca Cola
... Principle of skeletal muscle contraction When stimulated to contract, the heads of the bipolar myosin filament walk along actin in repeated cycles of attachment and detachment contraction of the sarcomere unit Actin ...
... Principle of skeletal muscle contraction When stimulated to contract, the heads of the bipolar myosin filament walk along actin in repeated cycles of attachment and detachment contraction of the sarcomere unit Actin ...
FREE Sample Here
... 19) Cell membranes are asymmetrical. Which of the following statements is the most likely explanation for the membrane's asymmetrical nature? A) Because the cell membrane forms a border between one cell and another in tightly packed tissues such as epithelium, the membrane must be asymmetrical B) Be ...
... 19) Cell membranes are asymmetrical. Which of the following statements is the most likely explanation for the membrane's asymmetrical nature? A) Because the cell membrane forms a border between one cell and another in tightly packed tissues such as epithelium, the membrane must be asymmetrical B) Be ...
Downloadable Full Text
... intracellular source. To pinpoint the location of accumulated DNA within Dnase2a-deficient cells, we stained MLFs with antidsDNA. We observed small and large DNA aggregates at perinuclear regions (Figure 2A, untreated), and interestingly, adjacent to condensed chromosomes of dividing cells (Figure S ...
... intracellular source. To pinpoint the location of accumulated DNA within Dnase2a-deficient cells, we stained MLFs with antidsDNA. We observed small and large DNA aggregates at perinuclear regions (Figure 2A, untreated), and interestingly, adjacent to condensed chromosomes of dividing cells (Figure S ...
A human homologue of yeast anti-silencing factor has histone
... factor A) functions as a histone chaperone in an ATPindependent manner. Other histone chaperones reported to date have in common acidic regions, which are likely to be involved in both binding to histones and nucleosome assembly activity (Kleinschmidt & Franke 1982; Kawase et al. 1996; Ito et al. 19 ...
... factor A) functions as a histone chaperone in an ATPindependent manner. Other histone chaperones reported to date have in common acidic regions, which are likely to be involved in both binding to histones and nucleosome assembly activity (Kleinschmidt & Franke 1982; Kawase et al. 1996; Ito et al. 19 ...
machinery pre-mRNA in sensing defects in the spliceosomal Mdm4
... Prmt5F/FER system for three main reasons: First, it allowed us to look at cell-autonomous defects. Second, we could derive a much larger number of cells amenable for further mechanistic studies. Third, it allowed us to focus on early time points after PRMT5 depletion in order to detect causal defect ...
... Prmt5F/FER system for three main reasons: First, it allowed us to look at cell-autonomous defects. Second, we could derive a much larger number of cells amenable for further mechanistic studies. Third, it allowed us to focus on early time points after PRMT5 depletion in order to detect causal defect ...
The 1997 GSA Honors and Awards
... bronze gene. This represented the first successful application of transposon tagging in plants and established the bronze locus, with its many interesting alleles, as a model system for investigation of gene regulation in plants and the effect of transposable elements at the molecular level. Oliver ...
... bronze gene. This represented the first successful application of transposon tagging in plants and established the bronze locus, with its many interesting alleles, as a model system for investigation of gene regulation in plants and the effect of transposable elements at the molecular level. Oliver ...
pdf-Dokument - Universität Bonn
... 1.1 Vesicular traffic in the secretory and endocytic pathways Eukaryotic cells have a complex internal membrane system, which allows them to release macromolecules through the secretory pathway or to take up nutrients and signal molecules by a process called endocytosis. The secretory pathway is a h ...
... 1.1 Vesicular traffic in the secretory and endocytic pathways Eukaryotic cells have a complex internal membrane system, which allows them to release macromolecules through the secretory pathway or to take up nutrients and signal molecules by a process called endocytosis. The secretory pathway is a h ...
Sponsler, Jeffrey, Frances Van Scoy, Doru Pacurari, 2002.
... query the atlas knowledge base and via heuristics derive localization. Other potential applications for the atlas include teaching systems, simulation, and model analysis. Anatomy Terms. Terms important to this report are defined briefly here. The neuron is a cell that functions as an information pr ...
... query the atlas knowledge base and via heuristics derive localization. Other potential applications for the atlas include teaching systems, simulation, and model analysis. Anatomy Terms. Terms important to this report are defined briefly here. The neuron is a cell that functions as an information pr ...
the Sec7 family of guanine-nucleotide- exchange factors
... inactive, abortive complex. A separate subclass of Sec7-domain proteins is involved in signal transduction and possess a domain that mediates membrane binding in response to extracellular signals. ...
... inactive, abortive complex. A separate subclass of Sec7-domain proteins is involved in signal transduction and possess a domain that mediates membrane binding in response to extracellular signals. ...
Determination of Symmetric and Asymmetric Division Planes in
... In keeping with their distinct mode of cytokinesis, the mechanisms by which division planes are determined in plants appear to be different from those in fungi and animals. In symmetrically dividing animal cells, the position of the spindle primarily determines the final division plane (109), whereas ...
... In keeping with their distinct mode of cytokinesis, the mechanisms by which division planes are determined in plants appear to be different from those in fungi and animals. In symmetrically dividing animal cells, the position of the spindle primarily determines the final division plane (109), whereas ...
Symmetry, asymmetry, and the cell cycle in plants: known knowns
... plans raise fundamental biological questions on their underlying molecular mechanisms; these questions include the extent of their evolutionary conservation across kingdoms and their causal relationship, if any, with the known symmetries and asymmetries that cells display in shape, movement, outgrow ...
... plans raise fundamental biological questions on their underlying molecular mechanisms; these questions include the extent of their evolutionary conservation across kingdoms and their causal relationship, if any, with the known symmetries and asymmetries that cells display in shape, movement, outgrow ...
Exine dehiscing induces rape microspore polarity
... zygotic division (Haecker et al., 2004), suggesting that the two daughter cells may possess different transcripts from the zygote. After zygote division, WOX8 is expressed in the basal cell lineage (Minako et al., 2011), and WOX8 can be used as a marker for the basal cell lineage (Haecker et al., ...
... zygotic division (Haecker et al., 2004), suggesting that the two daughter cells may possess different transcripts from the zygote. After zygote division, WOX8 is expressed in the basal cell lineage (Minako et al., 2011), and WOX8 can be used as a marker for the basal cell lineage (Haecker et al., ...
Natural antisense RNAs as mRNA regulatory elements in bacteria: a
... and their ability to be regulated by physical parameters (thermosensors) or small molecules (riboswitches). Other high-throughput screens have made it possible to design artificial metabolite analogs that modulate trans-acting regulatory RNAs with two functions: for example, a riboswitch coupled to ...
... and their ability to be regulated by physical parameters (thermosensors) or small molecules (riboswitches). Other high-throughput screens have made it possible to design artificial metabolite analogs that modulate trans-acting regulatory RNAs with two functions: for example, a riboswitch coupled to ...
COUP-TFI and COUP-TFII regulate expression of the NHE through a
... NHE1 is present in all mammalian cells [1], is involved in pH regulation [2] and control of cell volume [3], and is activated by growth factors [4]. The NHE is known to influence cell growth and differentiation and has recently been shown to be critical to neuronal cell growth and differentiation [5 ...
... NHE1 is present in all mammalian cells [1], is involved in pH regulation [2] and control of cell volume [3], and is activated by growth factors [4]. The NHE is known to influence cell growth and differentiation and has recently been shown to be critical to neuronal cell growth and differentiation [5 ...
Cell nucleus
In cell biology, the nucleus (pl. nuclei; from Latin nucleus or nuculeus, meaning kernel) is a membrane-enclosed organelle found in eukaryotic cells. Eukaryotes usually have a single nucleus, but a few cell types have no nuclei, and a few others have many.Cell nuclei contain most of the cell's genetic material, organized as multiple long linear DNA molecules in complex with a large variety of proteins, such as histones, to form chromosomes. The genes within these chromosomes are the cell's nuclear genome. The function of the nucleus is to maintain the integrity of these genes and to control the activities of the cell by regulating gene expression—the nucleus is, therefore, the control center of the cell. The main structures making up the nucleus are the nuclear envelope, a double membrane that encloses the entire organelle and isolates its contents from the cellular cytoplasm, and the nucleoskeleton (which includes nuclear lamina), a network within the nucleus that adds mechanical support, much like the cytoskeleton, which supports the cell as a whole.Because the nuclear membrane is impermeable to large molecules, nuclear pores are required that regulate nuclear transport of molecules across the envelope. The pores cross both nuclear membranes, providing a channel through which larger molecules must be actively transported by carrier proteins while allowing free movement of small molecules and ions. Movement of large molecules such as proteins and RNA through the pores is required for both gene expression and the maintenance of chromosomes. The interior of the nucleus does not contain any membrane-bound sub compartments, its contents are not uniform, and a number of sub-nuclear bodies exist, made up of unique proteins, RNA molecules, and particular parts of the chromosomes. The best-known of these is the nucleolus, which is mainly involved in the assembly of ribosomes. After being produced in the nucleolus, ribosomes are exported to the cytoplasm where they translate mRNA.