Cell walls
... b-(1, 3)-glucan is a minor component of plant tissue, but it is important in plant disease resistance because it occurs primarily in cell wall appositions and papillae in the form of callose in response to fungal penetration. Many pathogens produce b-(1, 3)-glucanase to degrade b(1, 3)-glucane. ...
... b-(1, 3)-glucan is a minor component of plant tissue, but it is important in plant disease resistance because it occurs primarily in cell wall appositions and papillae in the form of callose in response to fungal penetration. Many pathogens produce b-(1, 3)-glucanase to degrade b(1, 3)-glucane. ...
Comparison of cryofixation and aldehyde fixation for plant actin
... extended more towards the side walls. (D) Mature phragmoplast stains for actin preferentially at its periphery (arrowheads) while its central part, where presumably the cell plate has already formed, is actin-depleted. (E) Cell in prophase with a central actin-depleted zone (asterisk) and with accum ...
... extended more towards the side walls. (D) Mature phragmoplast stains for actin preferentially at its periphery (arrowheads) while its central part, where presumably the cell plate has already formed, is actin-depleted. (E) Cell in prophase with a central actin-depleted zone (asterisk) and with accum ...
Abstract Infection of plants by Zucchini Yellow Mosaic Virus (ZYMV
... formation induced damages of the ultrastructure below a depth of 30–40 and 50– 70 μm, respectively (Zechmann et al., 2005). After entering leaves through wounds, cracks or injection by aphids ZYMV replicates and moves from cell to cell through plasmodesmata until it reaches sieve elements. Systemic ...
... formation induced damages of the ultrastructure below a depth of 30–40 and 50– 70 μm, respectively (Zechmann et al., 2005). After entering leaves through wounds, cracks or injection by aphids ZYMV replicates and moves from cell to cell through plasmodesmata until it reaches sieve elements. Systemic ...
Chapter_12
... propagation delay, switching delay Assume propagation at two-thirds speed of light If source and destination on opposite sides of USA, propagation time ~ 48x10-3 seconds Given implicit congestion control, by the time dropped cell notification has reached source, 7.2x106 bits have been transmitted ...
... propagation delay, switching delay Assume propagation at two-thirds speed of light If source and destination on opposite sides of USA, propagation time ~ 48x10-3 seconds Given implicit congestion control, by the time dropped cell notification has reached source, 7.2x106 bits have been transmitted ...
Thrombin Activation of S-Phase Reentry by Cultured
... transdifferentiation. Upon removal of the lens, pigmented epithelial cells (PEC) in the dorsal margin of the iris enter S phase, lose their pigmentation, and give rise to a new lens. Transdifferentiation to lens is confined normally to PEC of the pupillary margin of the dorsal iris and the new lens ...
... transdifferentiation. Upon removal of the lens, pigmented epithelial cells (PEC) in the dorsal margin of the iris enter S phase, lose their pigmentation, and give rise to a new lens. Transdifferentiation to lens is confined normally to PEC of the pupillary margin of the dorsal iris and the new lens ...
Inducing chromosome pairing through premature condensation
... Introduction Many plant species are polyploid. Despite possessing multiple genomes, only true homologous chromosomes pair during meiosis. This correct pairing involves suppressing pairing between the multiple sets of related chromosomes. Understanding the basis for this pairing suppression has a pra ...
... Introduction Many plant species are polyploid. Despite possessing multiple genomes, only true homologous chromosomes pair during meiosis. This correct pairing involves suppressing pairing between the multiple sets of related chromosomes. Understanding the basis for this pairing suppression has a pra ...
Relaxation and Molecular Dynamics
... • Divide time into a series of timesteps, t • Expand position, velocity and acceleration as a Taylor series in t • Based on an initial set of positions, velocities and accelerations extrapolate to the next timestep e.g. v t t v t a.t (true for constant acceleration) ...
... • Divide time into a series of timesteps, t • Expand position, velocity and acceleration as a Taylor series in t • Based on an initial set of positions, velocities and accelerations extrapolate to the next timestep e.g. v t t v t a.t (true for constant acceleration) ...
The Arabidopsis sku6-spiral1 gene encodes a plus end
... Figure 1. Growth Phenotypes of spr1-6 and Wild-Type Seedlings and Plants. (A) and (B) Wild-type (A) and spr1-6 (B) seedlings grown 7 d on 1.5% agar-solidified GM tilted at 408 from the vertical (wave assay) and imaged from above the agar surface. The arrow in (B) delineates a root that has grown int ...
... Figure 1. Growth Phenotypes of spr1-6 and Wild-Type Seedlings and Plants. (A) and (B) Wild-type (A) and spr1-6 (B) seedlings grown 7 d on 1.5% agar-solidified GM tilted at 408 from the vertical (wave assay) and imaged from above the agar surface. The arrow in (B) delineates a root that has grown int ...
The tetrazolium reduction method for assessing the viability of
... Thus improved, the INT method is applicable for routine purposes and may have numerous applications in environmental studies, ecophysiology, ecotoxicology, microbiological control of water quality and waste water treatment. It has been used on different bacterial assemblages (Table 2). Two to 7 1% o ...
... Thus improved, the INT method is applicable for routine purposes and may have numerous applications in environmental studies, ecophysiology, ecotoxicology, microbiological control of water quality and waste water treatment. It has been used on different bacterial assemblages (Table 2). Two to 7 1% o ...
Cell evolution: How the pancreas borrowed from the brain
... series was first proposed, it was hypothesised that all hormone-producing cells, including pancreatic b-cells, were derived from a common ancestor tissue – the neural crest [1]. This was based on experiments looking through embryonic development at the positional association between APUD cells and c ...
... series was first proposed, it was hypothesised that all hormone-producing cells, including pancreatic b-cells, were derived from a common ancestor tissue – the neural crest [1]. This was based on experiments looking through embryonic development at the positional association between APUD cells and c ...
Electrochemical model for proton exchange membrane fuel cell
... density is shown in Fig. 4. In Fig. 5 the cell’s power density is shown as a function of current density for two different temperatures. It can be seen from these figures that the fuel cell’s efficiency is low and that a significant part of the theoretical output voltage is lost because of various l ...
... density is shown in Fig. 4. In Fig. 5 the cell’s power density is shown as a function of current density for two different temperatures. It can be seen from these figures that the fuel cell’s efficiency is low and that a significant part of the theoretical output voltage is lost because of various l ...
Electronic Student Book Chapter 1
... Microscopes gave scientists their first glimpses of cells. As microscopes improved, scientists saw that cells are made up of tiny structures. They now know that these structures cannot work independently. Cell structures must work as part of the cell unit to carry out activities. The chicken egg cel ...
... Microscopes gave scientists their first glimpses of cells. As microscopes improved, scientists saw that cells are made up of tiny structures. They now know that these structures cannot work independently. Cell structures must work as part of the cell unit to carry out activities. The chicken egg cel ...
Targeted Proteomic Study of the Cyclin
... Molecular Cell’s website). It is possible that there is an ATP requirement for this interaction or that the whole pool of Cln2-Ub conjugates is stably bound to Cdc48 before and after the lysis, preventing additional Cdc48 from binding after the lysis. Cln2-Ub Accumulates in cdc48-3 Mutant Cells Base ...
... Molecular Cell’s website). It is possible that there is an ATP requirement for this interaction or that the whole pool of Cln2-Ub conjugates is stably bound to Cdc48 before and after the lysis, preventing additional Cdc48 from binding after the lysis. Cln2-Ub Accumulates in cdc48-3 Mutant Cells Base ...
Cytokinesis in Tobacco BY-2 and Root Tip Cells: A
... cell wall between daughter cells. This process is accomplished by the formation of the phragmoplast that not only builds the new plate but spatially orients it within the cell relative to the whole plant or organ axis. The phragmoplast of higher plant cells has been described as consisting of three ...
... cell wall between daughter cells. This process is accomplished by the formation of the phragmoplast that not only builds the new plate but spatially orients it within the cell relative to the whole plant or organ axis. The phragmoplast of higher plant cells has been described as consisting of three ...
Targeting Nitric Oxide Mediated Upregulation of Membrane
... exposure of cells to sub-lethal „priming‟ with NO results in not only protection against higher concentrations of NO but also protection from other cytotoxic anti-tumor agents. Consequently, NO-regulated genes that are also up-regulated in tumor cells may be good targets for anti-tumor therapy. To t ...
... exposure of cells to sub-lethal „priming‟ with NO results in not only protection against higher concentrations of NO but also protection from other cytotoxic anti-tumor agents. Consequently, NO-regulated genes that are also up-regulated in tumor cells may be good targets for anti-tumor therapy. To t ...
Cellular response in subretinal neovascularization induced
... these membranes, the stromal cells are predominantly composed of RPE and vascular endothelial cells; however, small numbers of macrophages are also seen. Most CNVMs in ARMD include prominent extracellular matrices (ECMs) rich in collagen, laminin, and fibronectin.' CNVMs in this model appear to be c ...
... these membranes, the stromal cells are predominantly composed of RPE and vascular endothelial cells; however, small numbers of macrophages are also seen. Most CNVMs in ARMD include prominent extracellular matrices (ECMs) rich in collagen, laminin, and fibronectin.' CNVMs in this model appear to be c ...
Team Publications
... available for the treatment of patients with TNBC. In order to discover potential therapeutic targets, we searched for protein kinases that are overexpressed in human TNBC biopsies and whose silencing in TNBC cell lines causes cell death. A cohort including human BC biopsies obtained at Institut Cur ...
... available for the treatment of patients with TNBC. In order to discover potential therapeutic targets, we searched for protein kinases that are overexpressed in human TNBC biopsies and whose silencing in TNBC cell lines causes cell death. A cohort including human BC biopsies obtained at Institut Cur ...
Essential embryonic roles of the CKI-1 cyclin
... Following a phase of rapid proliferation, cells in developing embryos must decide when to cease division and then whether to survive and differentiate or instead undergo programmed death. In screens for genes that regulate embryonic patterning of the endoderm in Caenorhabditis elegans, we identified ...
... Following a phase of rapid proliferation, cells in developing embryos must decide when to cease division and then whether to survive and differentiate or instead undergo programmed death. In screens for genes that regulate embryonic patterning of the endoderm in Caenorhabditis elegans, we identified ...
Cajal bodies and coilin—moving towards function
... CBs can separate into two daughter bodies and join to form larger bodies. CB-joining events appear to be common and can involve CBs translocating large distances through the nucleoplasm. Separation of CBs into smaller structures can result in the asymmetric segregation of resident CB proteins betwee ...
... CBs can separate into two daughter bodies and join to form larger bodies. CB-joining events appear to be common and can involve CBs translocating large distances through the nucleoplasm. Separation of CBs into smaller structures can result in the asymmetric segregation of resident CB proteins betwee ...
Mitosis
Mitosis is a part of the cell cycle in which chromosomes in a cell nucleus are separated into two identical sets of chromosomes, each in its own nucleus. In general, mitosis (division of the nucleus) is often followed by cytokinesis, which divides the cytoplasm, organelles and cell membrane into two new cells containing roughly equal shares of these cellular components. Mitosis and cytokinesis together define the mitotic (M) phase of an animal cell cycle—the division of the mother cell into two daughter cells, genetically identical to each other and to their parent cell.The process of mitosis is divided into stages corresponding to the completion of one set of activities and the start of the next. These stages are prophase, prometaphase, metaphase, anaphase, and telophase. During mitosis, the chromosomes, which have already duplicated, condense and attach to fibers that pull one copy of each chromosome to opposite sides of the cell. The result is two genetically identical daughter nuclei. The cell may then divide by cytokinesis to produce two daughter cells. Producing three or more daughter cells instead of normal two is a mitotic error called tripolar mitosis or multipolar mitosis (direct cell triplication / multiplication). Other errors during mitosis can induce apoptosis (programmed cell death) or cause mutations. Certain types of cancer can arise from such mutations.Mitosis occurs only in eukaryotic cells and the process varies in different organisms. For example, animals undergo an ""open"" mitosis, where the nuclear envelope breaks down before the chromosomes separate, while fungi undergo a ""closed"" mitosis, where chromosomes divide within an intact cell nucleus. Furthermore, most animal cells undergo a shape change, known as mitotic cell rounding, to adopt a near spherical morphology at the start of mitosis. Prokaryotic cells, which lack a nucleus, divide by a different process called binary fission.