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The G-protein regulator LGN modulates the activity of the NO
The G-protein regulator LGN modulates the activity of the NO

... (soluble guanylate cyclase) (also called GTP pyrophosphatelyase). These effects include regulation of smooth muscle cell relaxation, neurotransmission, platelet function, mitochondrial biogenesis and cell proliferation [1,2]. sGC converts GTP into the second messenger cGMP, resulting in activation o ...
estrogen receptor by cyclin D1 Ligand
estrogen receptor by cyclin D1 Ligand

... Cyclin D1 is induced in response to mitogenic stimulation of quiescent cells and acts as an activator of CDK4 and CDK6. These cyclin D1/CDK complexes are key regulators of progression through the G1 phase of the cell cycle and are involved in functional inactivation of the retinoblastoma family prot ...
Mycobacteria Target DC-SIGN to Suppress Dendritic Cell Function
Mycobacteria Target DC-SIGN to Suppress Dendritic Cell Function

... purified ManLAM was efficiently bound by DC-SIGN, in contrast to AraLAM (Fig. 1 c), demonstrating that DCSIGN specifically interacts with the mono-, di-, and trimers of -d-mannoses of ManLAM. Even at high concentrations, DC-SIGN did not bind AraLAM, demonstrating a high specificity for ManLAM and i ...
Self-Incompatibility-induced Programmed Cell
Self-Incompatibility-induced Programmed Cell

... Robinson, 1998). There has been much debate about the cytosolic pH gradient, comprising an apical domain ~pH 6.8 and a subapical alkaline band ~pH 7.2 to 7.8 in lily pollen tubes (Fricker et al., 1997; Messerli and Robinson, 1998; Feijo et al., 2001; Lovy-Wheeler et al., 2006). Oscillations of [pH] ...
Short- and long-range functions of Goosecoid in
Short- and long-range functions of Goosecoid in

... of the organizer is to repress factors secreted from ventral regions of the embryo (Niehrs, 2004). Secreted ventralizing factors of the BMP, Wnt and Nodal families function in gradients in the early embryo and organizer-derived molecules attenuate the activity of these factors (Niehrs, 2004). Ventra ...
ERROR-PRONE REPAIR DNA POLYMERASES IN PROKARYOTES
ERROR-PRONE REPAIR DNA POLYMERASES IN PROKARYOTES

... do exhibit error-prone behavior. These polymerases include the four founding Y-family members and their human homologs, along with errant fellow travelers such as pol ␫, an enzyme that prefers to incorporate G rather than A opposite T. We also describe the properties of several repair polymerases th ...
Physiology and molecular biology of petal senescence
Physiology and molecular biology of petal senescence

... contents, and might therefore be due to ongoing remobilization, but might also occur independently of the remobilization process. Several factors that control programmed death of animal cells, such as caspases, proteins released by mitochondria, and proteins that control the release of compounds thr ...
EIR 18 - Universitätsklinikum Tübingen
EIR 18 - Universitätsklinikum Tübingen

... This year´s issue of EIR contains eight scientific articles, six of which are concerned with Exercise Immunology itself while the last two have a decidedly clinical orientation. We would love to see this latter part increase a bit in future issues of EIR. It must however be acknowledged that all of ...
Assessing the Flexibility of Intermediate Filaments by Atomic Force
Assessing the Flexibility of Intermediate Filaments by Atomic Force

... M.E. Müller Institute for Structural Biology Biozentrum, University of Basel, Klingelbergstr. 70 4056 Basel, Switzerland ...
Auxin transport – shaping the plant
Auxin transport – shaping the plant

... Two theoretical concepts have greatly in¯uenced the way that we think about auxin and its action: the concepts of a hormones and a morphogen. The mammalian hormone concept de®nes hormones as extracellular signaling molecules, which act on target cells distant from their localized site of synthesis [ ...
Author`s post-print  - Cardiff Metropolitan University
Author`s post-print - Cardiff Metropolitan University

... Medihoney™ on existing biofilm (Fig. 2a) because both bacteria dispersed from the biofilm and adherent bacteria contributed to density. ...
Arabidopsis VILLIN4 is involved in root hair growth through
Arabidopsis VILLIN4 is involved in root hair growth through

... cells (Klahre et al., 2000). The full length of AtVLN3 and the headpiece domains of AtVLN1 to AtVLN3, when fused with green fluorescent protein (GFP), decorate actin filaments in plant and animal cells, thus demonstrating that these AtVLNs bind to actin filaments in vivo (Klahre et al., 2000). The b ...
[pdf]
[pdf]

... are less dramatic but similar to those observed after injection of a dominant-negative mutant of the APC/C-specific E2, UbcH10C114S. By contrast, overexpression or injection of WT ubiquitin does not affect the degradation of APC/C substrates, progression through the cell cycle, or development of emb ...
Mouse Embryology Module, Woods Hole 2010
Mouse Embryology Module, Woods Hole 2010

... Alcian Blue does not readily dissolve in 70% ETOH, but does dissolve in 50% ETOH. To make 100 ml of 0.4% Alcian Blue stock, add 0.4g Alcian Blue to 10 ml 50% ETOH in a 250 ml bottle. Swirl and place in 37°C water bath. Swirl occasionally. When dissolved, add 25 ml water and 65 ml 95% ...
O A RIGINAL RTICLES
O A RIGINAL RTICLES

... has been observed following a lengthy intake of antibiotics or in the case of diarrhea. This can result in a reduction of the protective functions of these substances for the body. In order to obtain a regular absorption of isoflavones, the intake isoflavones rich foods or isoflavones supplements mu ...
A Receptor-Like Kinase Mediates Ammonium
A Receptor-Like Kinase Mediates Ammonium

... Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, Department of Biology, Henan University, Kaifeng 475001, China ...
1 Ratio of mutant JAK2-V617F to wild type Jak2 determines the MPD
1 Ratio of mutant JAK2-V617F to wild type Jak2 determines the MPD

... JAK2-V617F mutation could represent the primary causative lesion in MPD. While the JAK2-V617F mutation is found in approximately 95% of patients with polycythemia vera (PV), it is also detectable in about 50% of patient with primary myelofibrosis (PMF) and essential thrombocythemia (ET).2,5 It remai ...
Human Eosinophils from Transport-Mediated Release of Preformed
Human Eosinophils from Transport-Mediated Release of Preformed

... 4) brefeldin A (0.1 and 1 ␮g/ml; Biomol, Plymouth Meeting, PA). Statis- ...
Barley Aleurone Cells Contain Two Types of
Barley Aleurone Cells Contain Two Types of

... Figure 1 shows that barley aleurone cells contain protein storage vacuoles and a distinctly different kind of organelle, which we have called secondary vacuoles. Differential interference contrast (DIC) microscopy showed that these two types of vacuole occur in both GA- and ABA-treated aleurone prot ...
Endoplasmic reticulum localization of the low density lipoprotein
Endoplasmic reticulum localization of the low density lipoprotein

... initiated in the secretory pathway. Here, we evaluated the ability of several LDLR variants that are stalled within the secretory pathway to regulate apoB secretion. Both a naturally occurring mutant LDLR and an LDLR consisting of only the ligand-binding domains and a C-terminal endoplasmic reticulu ...
The functional relationship between ectodermal and mesodermal
The functional relationship between ectodermal and mesodermal

... ectoteloblasts, while others do not. Moreover, the number of ectoteloblasts varies between species. Conservation of mesoderm segmentation is consistent with a critical developmental function, such as providing an instructive signal to the segmental ectoderm. To test the hypothesis that the mesoderm ...
Discrete Domains Mediate the Light-Responsive
Discrete Domains Mediate the Light-Responsive

... and DET1, which are nuclear-targeted proteins whose interactions with the COP9-containing complex remain to be resolved (Pepper et al., 1994; von Arnim and Deng, 1994). Overexpression of the COP1 protein in transgenic Arabidopsis induces features of the etiolation pathway under light conditions, mos ...
Investigations on Mitochondrial Pleomorphy and
Investigations on Mitochondrial Pleomorphy and

... fluctuations in light, sugar and O2. Light and sugar are shown to induce fission whereas a greento-red photo-convertible mEos fluorescent protein targeted to mitochondria (mitoEos) reveals that hypoxia induces fusion, leading to giant mitochondria. The endoplasmic reticulum (ER) is shown to be a med ...
1 - The Mostowy Lab
1 - The Mostowy Lab

... Non-canonical autophagy is a new and developing concept, and can be characterized by features that are different from those in canonical autophagy [3]. In particular, non-canonical autophagy is:  A mechanism in which the double-membraned autophagosome does not require all of the ATG proteins to for ...
PDF
PDF

... nothing was known of cell volume regulation in oocytes before fertilization. We show here that GLYT1 is quiescent in mouse germinal-vesicle-stage oocytes but becomes fully activated within hours after ovulation is triggered. This initiates accumulation of substantial amounts of intracellular glycine ...
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Amitosis

Amitosis (a- + mitosis) is absence of mitosis, the usual form of cell division in the cells of eukaryotes. There are several senses in which eukaryotic cells can be amitotic. One refers to capability for non-mitotic division and the other refers to lack of capability for division. In one sense of the word, which is now mostly obsolete, amitosis is cell division in eukaryotic cells that happens without the usual features of mitosis as seen on microscopy, namely, without nuclear envelope breakdown and without formation of mitotic spindle and condensed chromosomes as far as microscopy can detect. However, most examples of cell division formerly thought to belong to this supposedly ""non-mitotic"" class, such as the division of unicellular eukaryotes, are today recognized as belonging to a class of mitosis called closed mitosis. A spectrum of mitotic activity can be categorized as open, semi-closed, and closed mitosis, depending on the fate of the nuclear envelope. An exception is the division of ciliate macronucleus, which is not mitotic, and the reference to this process as amitosis may be the only legitimate use of the ""non-mitotic division"" sense of the term today. In animals and plants which normally have open mitosis, the microscopic picture described in the 19th century as amitosis most likely corresponded to apoptosis, a process of programmed cell death associated with fragmentation of the nucleus and cytoplasm. Relatedly, even in the late 19th century cytologists mentioned that in larger life forms, amitosis is a ""forerunner of degeneration"".Another sense of amitotic refers to cells of certain tissues that are usually no longer capable of mitosis once the organism has matured into adulthood. In humans this is true of various muscle and nerve tissue types; if the existing ones are damaged, they cannot be replaced with new ones of equal capability. For example, cardiac muscle destroyed by heart attack and nerves destroyed by piercing trauma usually cannot regenerate. In contrast, skin cells are capable of mitosis throughout adulthood; old skin cells that die and slough off are replaced with new ones. Human liver tissue also has a sort of dormant regenerative ability; it is usually not needed or expressed but can be elicited if needed.
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