Nitrogen Metabolism in Plant Cell Suspension Cultures
... acid throughout the following experiments. In 10 mM NH4Cl medium, the addition of succinate increased the yield of the cells proportionately up to 6 mm (Fig. 1). By changing the NH4Cl concentration in the growth medium (Table II), it was found that a ratio of the molar concentrations of ammonia to s ...
... acid throughout the following experiments. In 10 mM NH4Cl medium, the addition of succinate increased the yield of the cells proportionately up to 6 mm (Fig. 1). By changing the NH4Cl concentration in the growth medium (Table II), it was found that a ratio of the molar concentrations of ammonia to s ...
Protist Characteristics
... Protists have complex life cycles. Many have both asexual and sexual reproduction. An example is a protist called Spirogyra, a type of algae, shown Figure 1.2. It usually exists as haploid cells that reproduce by binary fission. In a stressful environment, such as one that is very dry, Spirogyra may ...
... Protists have complex life cycles. Many have both asexual and sexual reproduction. An example is a protist called Spirogyra, a type of algae, shown Figure 1.2. It usually exists as haploid cells that reproduce by binary fission. In a stressful environment, such as one that is very dry, Spirogyra may ...
* Growth and Culturing Of Bacteria: * Binary Fission :
... defined and it depends on the environment conditions that the microorganism grows in. The daughter cells that resulted from the binary fission are independent and each of them can also undergo binary fission in order to give another two daughter cells and these daughter cells can also divide, so t ...
... defined and it depends on the environment conditions that the microorganism grows in. The daughter cells that resulted from the binary fission are independent and each of them can also undergo binary fission in order to give another two daughter cells and these daughter cells can also divide, so t ...
Auxin transport through non-hair cells sustains root
... manner 1-3. Root hairs are produced on a subset of epidermal cells as they increase in distance from the root tip. Auxin is required for their initiation 4-7 and continued growth 8-11, but little is known about its distribution in this region of the root. Counter to the expectation that hair cells m ...
... manner 1-3. Root hairs are produced on a subset of epidermal cells as they increase in distance from the root tip. Auxin is required for their initiation 4-7 and continued growth 8-11, but little is known about its distribution in this region of the root. Counter to the expectation that hair cells m ...
Cellular transcription factors that interact with p6 promoter elements
... Fig. 2. Binding of cellular transcription factors to region D of the p6 promoter. EMSAs were performed with 32P-labelled oligonucleotides and 5 µg nuclear extracts prepared from HeLa cells (A) and from K562 and BJAB cells (B). After electrophoresis, the gels were exposed to X-ray film. The assignmen ...
... Fig. 2. Binding of cellular transcription factors to region D of the p6 promoter. EMSAs were performed with 32P-labelled oligonucleotides and 5 µg nuclear extracts prepared from HeLa cells (A) and from K562 and BJAB cells (B). After electrophoresis, the gels were exposed to X-ray film. The assignmen ...
Document
... Section: Bacterial Cytoplasmic Membranes 5) The __________ body anchors the bacterial flagellum in the cell wall. Answer: basal Bloom's Rank: Knowledge Section: External Structures of Bacterial Cells 6) The reserve deposits of starch or other compounds found in many prokaryotic cells are called ____ ...
... Section: Bacterial Cytoplasmic Membranes 5) The __________ body anchors the bacterial flagellum in the cell wall. Answer: basal Bloom's Rank: Knowledge Section: External Structures of Bacterial Cells 6) The reserve deposits of starch or other compounds found in many prokaryotic cells are called ____ ...
Mouse mammary tumor virus-based vector transduces non
... posttranscriptional regulatory functions. Results: Using this system, vector particles were produced to markedly greater titers (>1000-fold) than those obtained previously. The titers (>106 transduction units /ml) were comparable to those achieved with lentiviral or gammaretroviral vectors. Importan ...
... posttranscriptional regulatory functions. Results: Using this system, vector particles were produced to markedly greater titers (>1000-fold) than those obtained previously. The titers (>106 transduction units /ml) were comparable to those achieved with lentiviral or gammaretroviral vectors. Importan ...
Isolation and Characterization of Conditional-Lethal Mutations in the TUB1 alpha-Tubulin Gene of the Yeast Saccharomyces cerevisiae .
... were located throughout the TUBl gene. We characterized the phenotypes caused by 38 of the mutations after shifts of mutants to the nonpermissive temperature. Populations of temperatureshifted mutant cells contained an excess of large-budded cells with undivided nuclei, consistentwith the previously ...
... were located throughout the TUBl gene. We characterized the phenotypes caused by 38 of the mutations after shifts of mutants to the nonpermissive temperature. Populations of temperatureshifted mutant cells contained an excess of large-budded cells with undivided nuclei, consistentwith the previously ...
Identification of Hedgehog Pathway Components by RNAi in
... secreted morphogen Hedgehog (Hh), we used RNA interference (RNAi) and a quantitative cultured cell assay to systematically screen functional roles of all kinases and phosphatases, and subsequently 43% of predicted Drosophila genes. Two gene products reported to function in Wingless ( Wg) signaling w ...
... secreted morphogen Hedgehog (Hh), we used RNA interference (RNAi) and a quantitative cultured cell assay to systematically screen functional roles of all kinases and phosphatases, and subsequently 43% of predicted Drosophila genes. Two gene products reported to function in Wingless ( Wg) signaling w ...
Full text - 2nd International Conference of the
... transmission of small RNA’s (c. 25 nucleotides) as ―gene silencers.‖ Special attention is being given to the sieve element-companion-cell complex which has been shown to transmit proteins of 27kD in size. An important future goal will be to elucidate the plasmodesmal functions in and near apical mer ...
... transmission of small RNA’s (c. 25 nucleotides) as ―gene silencers.‖ Special attention is being given to the sieve element-companion-cell complex which has been shown to transmit proteins of 27kD in size. An important future goal will be to elucidate the plasmodesmal functions in and near apical mer ...
Staining Bacteria
... method to stain bacteria so they can be visible in specimen samples. • Differentiate bacteria into two large groups (the Gram Positive and the Gram negative) • Gram status is important in medicine; the presence or absence of a cell wall will change the bacterium's susceptibility to some antibiotics ...
... method to stain bacteria so they can be visible in specimen samples. • Differentiate bacteria into two large groups (the Gram Positive and the Gram negative) • Gram status is important in medicine; the presence or absence of a cell wall will change the bacterium's susceptibility to some antibiotics ...
Epidermal club cells do not protect fathead minnows against
... Ostariophysan fish are frequently infected with the resting stage of aquatic trematodes, known as metacercariae. These encyst on and in a range of species-specific tissues, typically awaiting ingestion by an appropriate final host. Two general arguments lead to the prediction that club cells may det ...
... Ostariophysan fish are frequently infected with the resting stage of aquatic trematodes, known as metacercariae. These encyst on and in a range of species-specific tissues, typically awaiting ingestion by an appropriate final host. Two general arguments lead to the prediction that club cells may det ...
Reversal of Physiological Stress
... Department of Pharmacology, The George Washington University Medical Center, Washington, DC ...
... Department of Pharmacology, The George Washington University Medical Center, Washington, DC ...
Computational Models Reveal a Passive Mechanism for Cell
... distribution of goblet cells in the crypt [24]. The closely related cellular Potts model [25], which defines single cells as multiple, adjacent lattice sites and evolves cell movement subject to energy optimisation constraints, has been used to examine differential adhesion due to Eph/ephrin signall ...
... distribution of goblet cells in the crypt [24]. The closely related cellular Potts model [25], which defines single cells as multiple, adjacent lattice sites and evolves cell movement subject to energy optimisation constraints, has been used to examine differential adhesion due to Eph/ephrin signall ...
Origins of neural crest cells and cranial placodes at the edge of the
... Semaphorin is expressed on the posterior somite ...
... Semaphorin is expressed on the posterior somite ...
Modulation of Retinoblastoma and Retinoblastoma
... also be involved in the induction of the fully differentiated state. For example, it has been suggested that Rb protein, in association with myogenic factors such as Myo D, is mequmred to bring about terminal differentiation of muscle cells (5). The Rb gene encodes a nuclear phosphoprotein of 1 10 k ...
... also be involved in the induction of the fully differentiated state. For example, it has been suggested that Rb protein, in association with myogenic factors such as Myo D, is mequmred to bring about terminal differentiation of muscle cells (5). The Rb gene encodes a nuclear phosphoprotein of 1 10 k ...
![[9] John Hiscott1,2,3,4, Hakju Kwon1,2 and Pierre Génin1,2. Hostile](http://s1.studyres.com/store/data/009149009_1-886f14ff4241c04e7687727f6a979f26-300x300.png)
[9] John Hiscott1,2,3,4, Hakju Kwon1,2 and Pierre Génin1,2. Hostile
... aggravate asthma-related inflammation,6, it appears that even largely-resolving species such as the PGD2 series have a dualistic and tissue-specific role in either the promotion or resolution of inflammation. Acetyl salicylic acid, or aspirin, can similarly acetylate COX2. Such acetylation modifies ...
... aggravate asthma-related inflammation,6, it appears that even largely-resolving species such as the PGD2 series have a dualistic and tissue-specific role in either the promotion or resolution of inflammation. Acetyl salicylic acid, or aspirin, can similarly acetylate COX2. Such acetylation modifies ...
PDF
... Kewley, 2004). Members of the bHLH-PAS protein family are characterized by an N-terminal bHLH domain required for DNA binding and dimerization, as well as by a PAS domain that acts as a secondary dimerization interface (Crews and Fan, 1999; Taylor and Zhulin, 1999). Transcriptional control of target ...
... Kewley, 2004). Members of the bHLH-PAS protein family are characterized by an N-terminal bHLH domain required for DNA binding and dimerization, as well as by a PAS domain that acts as a secondary dimerization interface (Crews and Fan, 1999; Taylor and Zhulin, 1999). Transcriptional control of target ...
The cardiac pacemaker current Journal of Molecular and Cellular
... of aminoacids E324, Y331, and R339 of the HCN2 S4–S5 linker was able to disrupt channel closing thus indicating that this linker plays a crucial role in gating [34]. There is now evidence that the S4–S5 linker functionally interacts with the C-linker region; for example in HCN2 channels the electros ...
... of aminoacids E324, Y331, and R339 of the HCN2 S4–S5 linker was able to disrupt channel closing thus indicating that this linker plays a crucial role in gating [34]. There is now evidence that the S4–S5 linker functionally interacts with the C-linker region; for example in HCN2 channels the electros ...
Development
... The final shape and size of an adult leaf is modulated by leaf expansion, which is in turn dependent upon cell division and expansion. The importance of cell proliferation on leaf morphology can be observed in Arabidopsis transgenic lines expressing cyclindependent kinase inhibitor 1 (ICK1) or Kip-r ...
... The final shape and size of an adult leaf is modulated by leaf expansion, which is in turn dependent upon cell division and expansion. The importance of cell proliferation on leaf morphology can be observed in Arabidopsis transgenic lines expressing cyclindependent kinase inhibitor 1 (ICK1) or Kip-r ...
Nucleocytoplasmic transport
... cytoplasmic binding are relevant to the establishment of intracellular distributions. In these cases, nucleocytoplasmic transport is not simply a matter of crossing a barrier (the nuclear envelope) through specific channels (pore-complexes) between two aqueous compartments. It is more likely to be a ...
... cytoplasmic binding are relevant to the establishment of intracellular distributions. In these cases, nucleocytoplasmic transport is not simply a matter of crossing a barrier (the nuclear envelope) through specific channels (pore-complexes) between two aqueous compartments. It is more likely to be a ...
Glypican-1 Is a Vehicle for Polyamine Uptake in Mammalian Cells
... (HSPG). Potentially localizing to rafts and caveolae, they are selective regulators of ligand-receptor encounters and can thereby control both growth and development. The discoveries that mutations in genes involved in glypican assembly cause dysmorphic syndromes in man and aberrant patterning durin ...
... (HSPG). Potentially localizing to rafts and caveolae, they are selective regulators of ligand-receptor encounters and can thereby control both growth and development. The discoveries that mutations in genes involved in glypican assembly cause dysmorphic syndromes in man and aberrant patterning durin ...
Saquinavir, an HIV Protease Inhibitor, Is Transported by P
... NIH3T3-G185 (G185) cells (Currier et al., 1992; Cardarelli et al., 1995). Exposure of these cells to vinblastine or doxorubicin demonstrates a 27-fold resistance to vinblastine and an 11-fold resistance to doxorubicin (fig. 2), which is consistent with previous observations for these cells (Currier ...
... NIH3T3-G185 (G185) cells (Currier et al., 1992; Cardarelli et al., 1995). Exposure of these cells to vinblastine or doxorubicin demonstrates a 27-fold resistance to vinblastine and an 11-fold resistance to doxorubicin (fig. 2), which is consistent with previous observations for these cells (Currier ...
Vascular Disorders
... have a quiescent endothelium do not exhibit the markers of endothelial cell proliferation seen in infantile hemangiomas during their proliferative phase ...
... have a quiescent endothelium do not exhibit the markers of endothelial cell proliferation seen in infantile hemangiomas during their proliferative phase ...
Splice variants` role in mediating different disease states in
... Structure informs function, and this may be the evolutionary reason why alternative splicing, which is capable of generating different variants of the same protein, arise. But, given the energetic cost of generating different splice variants for testing their capability at a specific task, which inc ...
... Structure informs function, and this may be the evolutionary reason why alternative splicing, which is capable of generating different variants of the same protein, arise. But, given the energetic cost of generating different splice variants for testing their capability at a specific task, which inc ...
Cellular differentiation
In developmental biology, cellular differentiation isa cell changes from one cell type to another. Most commonly this is a less specialized type becoming a more specialized type, such as during cell growth. Differentiation occurs numerous times during the development of a multicellular organism as it changes from a simple zygote to a complex system of tissues and cell types. Differentiation continues in adulthood as adult stem cells divide and create fully differentiated daughter cells during tissue repair and during normal cell turnover. Some differentiation occurs in response to antigen exposure. Differentiation dramatically changes a cell's size, shape, membrane potential, metabolic activity, and responsiveness to signals. These changes are largely due to highly controlled modifications in gene expression and are the study of epigenetics. With a few exceptions, cellular differentiation almost never involves a change in the DNA sequence itself. Thus, different cells can have very different physical characteristics despite having the same genome.A cell that can differentiate into all cell types of the adult organism is known as pluripotent. Such cells are called embryonic stem cells in animals and meristematic cells in higher plants. A cell that can differentiate into all cell types, including the placental tissue, is known as totipotent. In mammals, only the zygote and subsequent blastomeres are totipotent, while in plants many differentiated cells can become totipotent with simple laboratory techniques. In cytopathology, the level of cellular differentiation is used as a measure of cancer progression. ""Grade"" is a marker of how differentiated a cell in a tumor is.