Actomyosin-based Self-organization of cell internalization during C. elegans gastrulation Open Access
... that are apparently similar on the cellular level (for example, oscillatory contractility) can result in markedly different outcomes, depending on the respective subcellular organization and behavior of actomyosin [8]. In the roundworm Caenorhabditis elegans, gastrulation begins at the 26-cell stage ...
... that are apparently similar on the cellular level (for example, oscillatory contractility) can result in markedly different outcomes, depending on the respective subcellular organization and behavior of actomyosin [8]. In the roundworm Caenorhabditis elegans, gastrulation begins at the 26-cell stage ...
Nuclear envelope dynamics during plant cell division suggest
... membranes, supporting the ER-retention model [8,9]. The same marker was used previously to show that in HeLa cells the NE membranes migrate into the mitotic ER and re-emerge to form the new NE [3]. The study also found that although LBR– GFP was strongly immobilized in the interphase NE by binding i ...
... membranes, supporting the ER-retention model [8,9]. The same marker was used previously to show that in HeLa cells the NE membranes migrate into the mitotic ER and re-emerge to form the new NE [3]. The study also found that although LBR– GFP was strongly immobilized in the interphase NE by binding i ...
Raven/Johnson Biology 8e
... d. Eukaryotic cells have evolved from prokaryotic cells. The correct answer is d— A. Answer a is incorrect. The cell theory states that all living things are composed of one or more cells. The correct answer is d— B. Answer b is incorrect. The idea that cells arise from preexisting cells is an impor ...
... d. Eukaryotic cells have evolved from prokaryotic cells. The correct answer is d— A. Answer a is incorrect. The cell theory states that all living things are composed of one or more cells. The correct answer is d— B. Answer b is incorrect. The idea that cells arise from preexisting cells is an impor ...
Lamin proteins form an internal nucleoskeleton as well as a
... The nuclear lamina is a protein mesh underlying the nuclear membrane that remains associated with the residual nuclear envelope after extraction with non-ionic detergents and high concentrations of salt (Newport and Forbes, 1987; Gerace and Burke, 1988). In most mammalian cells, it is composed of th ...
... The nuclear lamina is a protein mesh underlying the nuclear membrane that remains associated with the residual nuclear envelope after extraction with non-ionic detergents and high concentrations of salt (Newport and Forbes, 1987; Gerace and Burke, 1988). In most mammalian cells, it is composed of th ...
Conjecture: Can Continuous Regeneration Lead to Immortality
... pinna.14 Although this is not seen in mice other than this mouse strain and its parental line, the LG/J mouse strain, hole closure has been reported in both rabbit ears and bat wings.15,16 The MRL mouse has also been shown to heal cryoinjuries to the right ventricle of the heart through cell prolife ...
... pinna.14 Although this is not seen in mice other than this mouse strain and its parental line, the LG/J mouse strain, hole closure has been reported in both rabbit ears and bat wings.15,16 The MRL mouse has also been shown to heal cryoinjuries to the right ventricle of the heart through cell prolife ...
Naive T cell homeostasis: from awareness of space to a
... specificity in the same environment are unaffected, thereby providing a potential mechanism to sustain TCR diversity 26–29 (fIG. 1a). by this model, competition for a self-peptide–MHC molecule (limited at the level of selfpeptide–MHC expression or access) controls the size of the pool of T cells cap ...
... specificity in the same environment are unaffected, thereby providing a potential mechanism to sustain TCR diversity 26–29 (fIG. 1a). by this model, competition for a self-peptide–MHC molecule (limited at the level of selfpeptide–MHC expression or access) controls the size of the pool of T cells cap ...
Cdk1 regulates centrosome separation by restraining proteolysis of
... suggesting a possible role for Ase1 in spindle assembly (data not shown). It is possible that failure to separate SPBs in cdc28Y19E and cdc28-as1 cells is due to low abundance of these proteins. To test this, G1-synchronized cdc28Y19E cells expressing Cin8-HA3, Kip1-cmyc3 or Ase1-cmyc3 from their re ...
... suggesting a possible role for Ase1 in spindle assembly (data not shown). It is possible that failure to separate SPBs in cdc28Y19E and cdc28-as1 cells is due to low abundance of these proteins. To test this, G1-synchronized cdc28Y19E cells expressing Cin8-HA3, Kip1-cmyc3 or Ase1-cmyc3 from their re ...
PIERGIORGIO PETTAZZONI
... cells, inhibits proliferation and induces differentiation of HL-60 human leukemic cells. This HNE concentration also induces erythroid differentiation by increasing gamma globin expression in MEL and K562 cells. Moreover, HNE causes cell cycle arrest and apoptosis in numerous cell lines. The mechani ...
... cells, inhibits proliferation and induces differentiation of HL-60 human leukemic cells. This HNE concentration also induces erythroid differentiation by increasing gamma globin expression in MEL and K562 cells. Moreover, HNE causes cell cycle arrest and apoptosis in numerous cell lines. The mechani ...
Molecular identification of 26 syntaxin genes and
... a given intracellular compartment (1–3). SNAREs vary widely in size and structure and share only one homolo- ...
... a given intracellular compartment (1–3). SNAREs vary widely in size and structure and share only one homolo- ...
Systematic identification of cell size regulators in
... the intensity of the bud neck (triangles) of a representative cell measured with a time resolution of 1 min. Gray lines denote cytokinesis and START (bud neck appearance), and red circle denotes time of nuclear separation. See Materials and Methods for details of determination of bud neck disappeara ...
... the intensity of the bud neck (triangles) of a representative cell measured with a time resolution of 1 min. Gray lines denote cytokinesis and START (bud neck appearance), and red circle denotes time of nuclear separation. See Materials and Methods for details of determination of bud neck disappeara ...
UNDERSTANDING THE INTRACELLULAR NICHE IN CNIDARIAN
... area of research and a SCOPUS search for publications on just one of the apicomplexans (Plasmodium) returns over 38 780 hits, whereas a search for “Symbiodinium OR zooxanthella” returns 1337. Dinoflagellates, apicomplexans, and ciliates are sister taxa all belonging to the Alveolata (Cavalier-Smith ...
... area of research and a SCOPUS search for publications on just one of the apicomplexans (Plasmodium) returns over 38 780 hits, whereas a search for “Symbiodinium OR zooxanthella” returns 1337. Dinoflagellates, apicomplexans, and ciliates are sister taxa all belonging to the Alveolata (Cavalier-Smith ...
The hypersensitive response and the induction of cell death in plants
... et al, 1994). Such rapid responses could make detection of intermediate steps almost impossible using fixed tissues. As yet there is no specific molecular or cytological marker in plants which would allow clear discrimination between necrosis and the HR. Therefore recent investigations have often ap ...
... et al, 1994). Such rapid responses could make detection of intermediate steps almost impossible using fixed tissues. As yet there is no specific molecular or cytological marker in plants which would allow clear discrimination between necrosis and the HR. Therefore recent investigations have often ap ...
cell-substrate contacts in cultured chick embryonic cells
... per cell, due to spreading, and a closer match between phase and IR images due to reduced ruffling activity was found. The only other difference was that more extensive contacts were apparent in the interior of the explant. These consisted of short processes, which could be identified in PC and were ...
... per cell, due to spreading, and a closer match between phase and IR images due to reduced ruffling activity was found. The only other difference was that more extensive contacts were apparent in the interior of the explant. These consisted of short processes, which could be identified in PC and were ...
How signaling modalities link oogenesis to
... • Impact on the preimplantation embryo • Can oogenesis be recapitulated in vitro ...
... • Impact on the preimplantation embryo • Can oogenesis be recapitulated in vitro ...
Theory notes task worksheets etc answers
... A worksheet is a single sheet of rows and columns in a workbook. It consists of all of the cells on that single sheet 1b. Give an example of the use of worksheets within a business context Any suitable example e.g. a different worksheet for each month of the year to keep track of expenses; a differe ...
... A worksheet is a single sheet of rows and columns in a workbook. It consists of all of the cells on that single sheet 1b. Give an example of the use of worksheets within a business context Any suitable example e.g. a different worksheet for each month of the year to keep track of expenses; a differe ...
PDF
... daunting and conceptually difficult problems in biology. How do specialized cells and tissues differentiate from their more simple progenitors during embryonic development and become organized into a three-dimensional architectural framework? At what point along a lineage pathway are cells committed ...
... daunting and conceptually difficult problems in biology. How do specialized cells and tissues differentiate from their more simple progenitors during embryonic development and become organized into a three-dimensional architectural framework? At what point along a lineage pathway are cells committed ...
The Small GTPases Rho and Rac Are Required for the
... and Hall, 1996; Zigmond, 1996). Studies in fibroblasts revealed that members of the Rho family modulate different aspects of actin organization and cell morphology, i.e., stress fibers, lamellipodia, and filopodia are regulated by Rho, Rac, and Cdc42, respectively (Ridley and Hall, 1992; Ridley et a ...
... and Hall, 1996; Zigmond, 1996). Studies in fibroblasts revealed that members of the Rho family modulate different aspects of actin organization and cell morphology, i.e., stress fibers, lamellipodia, and filopodia are regulated by Rho, Rac, and Cdc42, respectively (Ridley and Hall, 1992; Ridley et a ...
08 Prokaryotes
... Many prokaryotes secrete sticky substances that form an additional protection layer – capsule outside the cell wall. Some prokaryotes adhere to one another or to substrate by surface appendages called pili. ...
... Many prokaryotes secrete sticky substances that form an additional protection layer – capsule outside the cell wall. Some prokaryotes adhere to one another or to substrate by surface appendages called pili. ...
Plant Cells Contain Two Functionally Distinct
... al., 1992) cells. The processed mature form of aleurain colocalized with vacuolar enzyme markers in cell fractionation experiments (Holwerda et al., 1992). The enzymes responsible for processing proaleurain in barley aleurone cells have an acidic pH optimum (Holwerda et al., 1990), and aleurain puri ...
... al., 1992) cells. The processed mature form of aleurain colocalized with vacuolar enzyme markers in cell fractionation experiments (Holwerda et al., 1992). The enzymes responsible for processing proaleurain in barley aleurone cells have an acidic pH optimum (Holwerda et al., 1990), and aleurain puri ...
Fuel Cell book.indd
... hose. This water may be sucked in by the cell when operated in the fuel cell mode. This water could disturb the gas supply and may cause a sudden drop in power. ...
... hose. This water may be sucked in by the cell when operated in the fuel cell mode. This water could disturb the gas supply and may cause a sudden drop in power. ...
A New Model of the Human Atrial Myocyte with Variable T
... TT organisation had a significant influence on spatiotemporal calcium cycling (Figure 3). In the large cell with high TT density, an almost uniform rise and decay in Ca2+ is observed throughout the cell during the Ca2+ transient. In the small cell with no TTs, propagation of Ca2+ from the surface sa ...
... TT organisation had a significant influence on spatiotemporal calcium cycling (Figure 3). In the large cell with high TT density, an almost uniform rise and decay in Ca2+ is observed throughout the cell during the Ca2+ transient. In the small cell with no TTs, propagation of Ca2+ from the surface sa ...
Genome-wide gene expression in uro mutant
... and developmental processes and the uro mutant demonstrated several auxin defective phenotypes (Guo et al. 2004), it is possible that the altered expression levels of other hormone related genes may be caused by an indirect effect. Our data also revealed the altered expression levels of cell cycle a ...
... and developmental processes and the uro mutant demonstrated several auxin defective phenotypes (Guo et al. 2004), it is possible that the altered expression levels of other hormone related genes may be caused by an indirect effect. Our data also revealed the altered expression levels of cell cycle a ...
Chapter 3- Part 1 Cells PPT
... I. Anatomy of the Generalized Cell Cells are the building blocks of all living things Carry out all chemical activities needed to sustain life The activity of a cell depends on its shape and the number and types of cellular organelles. ...
... I. Anatomy of the Generalized Cell Cells are the building blocks of all living things Carry out all chemical activities needed to sustain life The activity of a cell depends on its shape and the number and types of cellular organelles. ...
Cell cycle
The cell cycle or cell-division cycle is the series of events that take place in a cell leading to its division and duplication (replication) that produces two daughter cells. In prokaryotes which lack a cell nucleus, the cell cycle occurs via a process termed binary fission. In cells with a nucleus, as in eukaryotes, the cell cycle can be divided into three periods: interphase, the mitotic (M) phase, and cytokinesis. During interphase, the cell grows, accumulating nutrients needed for mitosis, preparing it for cell division and duplicating its DNA. During the mitotic phase, the cell splits itself into two distinct daughter cells. During the final stage, cytokinesis, the new cell is completely divided. To ensure the proper division of the cell, there are control mechanisms known as cell cycle checkpoints.The cell-division cycle is a vital process by which a single-celled fertilized egg develops into a mature organism, as well as the process by which hair, skin, blood cells, and some internal organs are renewed. After cell division, each of the daughter cells begin the interphase of a new cycle. Although the various stages of interphase are not usually morphologically distinguishable, each phase of the cell cycle has a distinct set of specialized biochemical processes that prepare the cell for initiation of cell division.