Cell-cycle regulation
... function, as RNAi results in embryonic lethality at approximately the hundred-cell stage (Brodigan et al., 2003; Fay and Han, 2000). Several other members of the Cdk superfamily are present in C. elegans, including a Cdk7/Mo15 ortholog (Boxem et al., 1999; Liu and Kipreos, 2000). Cdk7 was identified ...
... function, as RNAi results in embryonic lethality at approximately the hundred-cell stage (Brodigan et al., 2003; Fay and Han, 2000). Several other members of the Cdk superfamily are present in C. elegans, including a Cdk7/Mo15 ortholog (Boxem et al., 1999; Liu and Kipreos, 2000). Cdk7 was identified ...
Full Text - The International Journal of Developmental Biology
... tion revealed that filopodia are firmly adherent to and aligned with extracellular fibrils. Furthermore, the presence of the statistically significant alignment of such fibrils along the blastopore-animal pole axis (Johnson et al., 1992; Nakatsuji et al., 1982), indicates an interesting possibility ...
... tion revealed that filopodia are firmly adherent to and aligned with extracellular fibrils. Furthermore, the presence of the statistically significant alignment of such fibrils along the blastopore-animal pole axis (Johnson et al., 1992; Nakatsuji et al., 1982), indicates an interesting possibility ...
- Wiley Online Library
... divisome – FtsZ, FtsA, ZipA, ZapA, FtsE, FtsX, FtsK, FtsQ, FtsB, FtsL, FtsW, FtsI, FtsN, AmiC and EnvC – 10 (underlined proteins) are essential for cell division (Goehring and Beckwith, 2005). The 10 essential divisome proteins are proposed to be recruited in a concerted mode of assembly (RayChaudhu ...
... divisome – FtsZ, FtsA, ZipA, ZapA, FtsE, FtsX, FtsK, FtsQ, FtsB, FtsL, FtsW, FtsI, FtsN, AmiC and EnvC – 10 (underlined proteins) are essential for cell division (Goehring and Beckwith, 2005). The 10 essential divisome proteins are proposed to be recruited in a concerted mode of assembly (RayChaudhu ...
BCL-2 Expression and Mitochondrial Activity in
... complexes with death-accelerating homologs7 and functions in antioxidant pathways in preventing apoptosis.8The precise biochemical activities of bcl-2 protein and its homologs are not known, however. Because of its localization to mitochondrial membranes,' protection by BCL-2 has been previously ass ...
... complexes with death-accelerating homologs7 and functions in antioxidant pathways in preventing apoptosis.8The precise biochemical activities of bcl-2 protein and its homologs are not known, however. Because of its localization to mitochondrial membranes,' protection by BCL-2 has been previously ass ...
Distribution of Lysosomes in Cultured Cells and Ascites Tumor Cells
... outgrowth in cultures. Evidence presented suggests that hepatic cells lost their characteristic nature during a short term cultivation, so far as the acid phosphatase activity is concerned. Robbins and Gonatas (1964a, b) examined the ultrastructure in the course of mitotic division by means of elect ...
... outgrowth in cultures. Evidence presented suggests that hepatic cells lost their characteristic nature during a short term cultivation, so far as the acid phosphatase activity is concerned. Robbins and Gonatas (1964a, b) examined the ultrastructure in the course of mitotic division by means of elect ...
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Lecture 6 - The Plasma Membrane
... and tertiary structure, but no quaternary structure BIOL 211 Winter 2012 ...
... and tertiary structure, but no quaternary structure BIOL 211 Winter 2012 ...
7-2 Eukaryotic Cell Structure
... There are two types of ER—rough and smooth. The portion of the ER involved in protein synthesis is called rough endoplasmic reticulum, or rough ER. Ribosomes are found on the surface of rough ER. Rough ER is abundant in cells that produce large amounts of protein for export. ...
... There are two types of ER—rough and smooth. The portion of the ER involved in protein synthesis is called rough endoplasmic reticulum, or rough ER. Ribosomes are found on the surface of rough ER. Rough ER is abundant in cells that produce large amounts of protein for export. ...
7-2 Eukaryotic Cell Structure
... There are two types of ER—rough and smooth. The portion of the ER involved in protein synthesis is called rough endoplasmic reticulum, or rough ER. Ribosomes are found on the surface of rough ER. Rough ER is abundant in cells that produce large amounts of protein for export. ...
... There are two types of ER—rough and smooth. The portion of the ER involved in protein synthesis is called rough endoplasmic reticulum, or rough ER. Ribosomes are found on the surface of rough ER. Rough ER is abundant in cells that produce large amounts of protein for export. ...
Science Express Logo Report
... Induced pluripotent stem (iPS) cells have been generated from mouse and human fibroblasts by the retroviral transduction of four transcription factors. However, the cell origins and molecular mechanisms of iPS cell induction remain elusive. This report describes the generation of iPS cells from adul ...
... Induced pluripotent stem (iPS) cells have been generated from mouse and human fibroblasts by the retroviral transduction of four transcription factors. However, the cell origins and molecular mechanisms of iPS cell induction remain elusive. This report describes the generation of iPS cells from adul ...
7-2 Eukaryotic Cell Structure
... There are two types of ER—rough and smooth. The portion of the ER involved in protein synthesis is called rough endoplasmic reticulum, or rough ER. Ribosomes are found on the surface of rough ER. Rough ER is abundant in cells that produce large amounts of protein for export. ...
... There are two types of ER—rough and smooth. The portion of the ER involved in protein synthesis is called rough endoplasmic reticulum, or rough ER. Ribosomes are found on the surface of rough ER. Rough ER is abundant in cells that produce large amounts of protein for export. ...
Tricia Windgassen 12/8/09 BIO464 Lab 2009 Bradley University
... from meiosis) that is exchanged with another cell before fertilization. This study’s conjugation cyclin gene expression profile did not closely agree with the Tetrahymena Gene Expression Database’s (TGED) expression profile for this cyclin, which peaked significantly at conjugation hour 0. ...
... from meiosis) that is exchanged with another cell before fertilization. This study’s conjugation cyclin gene expression profile did not closely agree with the Tetrahymena Gene Expression Database’s (TGED) expression profile for this cyclin, which peaked significantly at conjugation hour 0. ...
Notch Activation of Notch2 Selected Mesenchymal Stem Cells
... maintain stem cell mutipotency and expand cell numbers ex vivo. Notch signaling is initiated when the ligands Jagged1, 2 or Delta-like 1, 3, 4 bind to the single-pass transmembrane cell surface Notch receptors (Notch1-4) on neighboring cells. This interaction induces cleavage of the Notch receptors, ...
... maintain stem cell mutipotency and expand cell numbers ex vivo. Notch signaling is initiated when the ligands Jagged1, 2 or Delta-like 1, 3, 4 bind to the single-pass transmembrane cell surface Notch receptors (Notch1-4) on neighboring cells. This interaction induces cleavage of the Notch receptors, ...
Roseoloviruses manipulate host cell cycle - HHV
... Introduction The mammalian cell cycle is a highly regulated process. At the G1 phase cells undergo a critical check point, ensuring their readiness for DNA synthesis. This is followed by the S-phase during which the cellular genome is duplicated. Following DNA duplication, the cell progresses into t ...
... Introduction The mammalian cell cycle is a highly regulated process. At the G1 phase cells undergo a critical check point, ensuring their readiness for DNA synthesis. This is followed by the S-phase during which the cellular genome is duplicated. Following DNA duplication, the cell progresses into t ...
Chapter 27
... Genetic recombination, the combining of DNA from two sources, contributes to diversity Prokaryotic DNA from different individuals can be brought together by transformation, transduction, and conjugation Movement of genes among individuals from different species is called horizontal gene transf ...
... Genetic recombination, the combining of DNA from two sources, contributes to diversity Prokaryotic DNA from different individuals can be brought together by transformation, transduction, and conjugation Movement of genes among individuals from different species is called horizontal gene transf ...
C 3 Cellular Structure and Function
... level of the cell. As microscopes continued to improve, more discoveries were made about the cells of living things. However, by the late 1800s, light microscopes had reached their limit. Objects much smaller than cells, including the structures inside cells, were too small to be seen with even the ...
... level of the cell. As microscopes continued to improve, more discoveries were made about the cells of living things. However, by the late 1800s, light microscopes had reached their limit. Objects much smaller than cells, including the structures inside cells, were too small to be seen with even the ...
Molecular encounters at microtubule ends in the plant cell cortex
... where it is involved in spindle assembly and MT outgrowth from the centrosome [18]. Similarly, the cyclindependent kinase CDKA is recruited to the late PPB in plant cells entering mitosis [19]. In mammalian cells, the initial activation of cyclin B1-Cdk1 in early prophase takes place at the centroso ...
... where it is involved in spindle assembly and MT outgrowth from the centrosome [18]. Similarly, the cyclindependent kinase CDKA is recruited to the late PPB in plant cells entering mitosis [19]. In mammalian cells, the initial activation of cyclin B1-Cdk1 in early prophase takes place at the centroso ...
Adult stem cells Hessah Alshammari MSc stem cell technology
... Under laboratory conditions scientists use the patient's own skin stem cells and grow the top layer of the skin, the 'epidermis'. Professor Maitz treated farmer John Heffernan who suffered burns to 80 per cent of his body in 2006. They've had to replace his skin from where ever he got burnt. They di ...
... Under laboratory conditions scientists use the patient's own skin stem cells and grow the top layer of the skin, the 'epidermis'. Professor Maitz treated farmer John Heffernan who suffered burns to 80 per cent of his body in 2006. They've had to replace his skin from where ever he got burnt. They di ...
Cell Cycle Modulation in the Response of the
... complexes is regulated by the binding of CKS (De Veylder et al., 2001a), a putative docking factor, and of Kip-related proteins (KRPs), which are inhibitors of CDK activity (reviewed by Dewitte and Murray, 2003). Superimposed on this, the phosphorylation state of various conserved residues of the CD ...
... complexes is regulated by the binding of CKS (De Veylder et al., 2001a), a putative docking factor, and of Kip-related proteins (KRPs), which are inhibitors of CDK activity (reviewed by Dewitte and Murray, 2003). Superimposed on this, the phosphorylation state of various conserved residues of the CD ...
Word
... KAUFER, B. B., JAROSINSKI, K. W. & OSTERRIEDER, N. 2011. Herpesvirus telomeric repeats facilitate genomic integration into host telomeres and mobilization of viral DNA during reactivation. J Exp Med, 208, 605-15. KUHL, U., LASSNER, D., WALLASCHEK, N., GROSS, U. M., KRUEGER, G. R., SEEBERG, B., KAUFE ...
... KAUFER, B. B., JAROSINSKI, K. W. & OSTERRIEDER, N. 2011. Herpesvirus telomeric repeats facilitate genomic integration into host telomeres and mobilization of viral DNA during reactivation. J Exp Med, 208, 605-15. KUHL, U., LASSNER, D., WALLASCHEK, N., GROSS, U. M., KRUEGER, G. R., SEEBERG, B., KAUFE ...
Chapter 3
... Metaphase - microtubules align the centromeres of the chromatid pairs at the metaphase plate Anaphase - the chromatid pairs split at the centromere and move to opposite poles of the cell; the chromatids are now called chromosomes Telophase - two identical nuclei are formed around the identical sets ...
... Metaphase - microtubules align the centromeres of the chromatid pairs at the metaphase plate Anaphase - the chromatid pairs split at the centromere and move to opposite poles of the cell; the chromatids are now called chromosomes Telophase - two identical nuclei are formed around the identical sets ...
Hyperosmotic stress-induced actin filament reorganization in leaf
... In plasmolysed cells, the AF cytoskeleton is signi®cantly affected. The changes observed were identical among all the mannitol solutions used (0.3, 0.5 and 1 M) as well as among all the epidermal and mesophyll cell types examined. To avoid repetition of the results the AF organization in cells plasm ...
... In plasmolysed cells, the AF cytoskeleton is signi®cantly affected. The changes observed were identical among all the mannitol solutions used (0.3, 0.5 and 1 M) as well as among all the epidermal and mesophyll cell types examined. To avoid repetition of the results the AF organization in cells plasm ...
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.