The anaphase promoting complex/ cyclosome: a
... apparatus during mitosis. Without APC/C, cells cannot separate their sister chromatids in anaphase, they cannot exit from mitosis and divide into two daughter cells, and they cannot initiate the steps that are necessary for DNA replication later in S phase. APC/C seems to have similarly important fu ...
... apparatus during mitosis. Without APC/C, cells cannot separate their sister chromatids in anaphase, they cannot exit from mitosis and divide into two daughter cells, and they cannot initiate the steps that are necessary for DNA replication later in S phase. APC/C seems to have similarly important fu ...
Chapter 1: The Microbial World and You
... The site of protein synthesis (translation). Found in all eucaryotic and procaryotic cells. Made up of protein and ribosomal RNA (rRNA). Procaryotic ribosomes (70S) are smaller and less dense than eucaryotic ribosomes (80S). Procaryotic ribosomes have two subunits: Small subunit: 30S L ...
... The site of protein synthesis (translation). Found in all eucaryotic and procaryotic cells. Made up of protein and ribosomal RNA (rRNA). Procaryotic ribosomes (70S) are smaller and less dense than eucaryotic ribosomes (80S). Procaryotic ribosomes have two subunits: Small subunit: 30S L ...
Research Project Final Report
... which someone not closely associated with the project can follow. Defra recognises that in a small minority of cases there may be information, such as intellectual property or commercially confidential data, used in or generated by the research project, which should not be disclosed. In these cases, ...
... which someone not closely associated with the project can follow. Defra recognises that in a small minority of cases there may be information, such as intellectual property or commercially confidential data, used in or generated by the research project, which should not be disclosed. In these cases, ...
a morphogenetic role for the TNF signalling pathway
... adaptor proteins TRADD, receptor-interacting protein (RIP) and TRAF2 do not participate in TNFα-induced activation of Rho GTPases (Puls et al., 1999). Thus, the effects on the actin cytoskeleton may be separable from the classical pathways downstream of the TNFR that involve caspase, JNK and NF-κB s ...
... adaptor proteins TRADD, receptor-interacting protein (RIP) and TRAF2 do not participate in TNFα-induced activation of Rho GTPases (Puls et al., 1999). Thus, the effects on the actin cytoskeleton may be separable from the classical pathways downstream of the TNFR that involve caspase, JNK and NF-κB s ...
Atg18 function in autophagy is regulated by specific sites within its b
... into atg18D mutant cells to perform the GFP-Atg8 processing assay. This is a well-established method to monitor bulk autophagy in yeast by measuring the accumulation of free GFP in the vacuole over time (Cheong and Klionsky, 2008). When this assay was performed in wild type cells, a band of 25 kDa c ...
... into atg18D mutant cells to perform the GFP-Atg8 processing assay. This is a well-established method to monitor bulk autophagy in yeast by measuring the accumulation of free GFP in the vacuole over time (Cheong and Klionsky, 2008). When this assay was performed in wild type cells, a band of 25 kDa c ...
PROTEINS IN NUCLEOCYTOPLASMIC INTERACTIONS III
... nuclei of operated ceils contain more (194 epm) than the predicted amount of radioactive protein (164 cpm), they must be capable of compensating to some degree by taking up protein that under normal circumstances would remain in the cytoplasm. Since a class of nuclear protein (RMP) has been shown al ...
... nuclei of operated ceils contain more (194 epm) than the predicted amount of radioactive protein (164 cpm), they must be capable of compensating to some degree by taking up protein that under normal circumstances would remain in the cytoplasm. Since a class of nuclear protein (RMP) has been shown al ...
PROTEINS IN NUCLEOCYTOPLASMIC
... nuclei of operated ceils contain more (194 epm) than the predicted amount of radioactive protein (164 cpm), they must be capable of compensating to some degree by taking up protein that under normal circumstances would remain in the cytoplasm. Since a class of nuclear protein (RMP) has been shown al ...
... nuclei of operated ceils contain more (194 epm) than the predicted amount of radioactive protein (164 cpm), they must be capable of compensating to some degree by taking up protein that under normal circumstances would remain in the cytoplasm. Since a class of nuclear protein (RMP) has been shown al ...
Centromeres: An Integrated Protein/DNA Complex
... Figure 1. At least three middle repetitive elements K (6.4 kb), L (4.5 kb), and B (1-2 kb) flank a nonconservedsingle copy central core, cc2 (7 kb chromosome2). Independent investigations have also shown the S. pombe centromere to be made up of a unique central domain flanked by repeated elements dg ...
... Figure 1. At least three middle repetitive elements K (6.4 kb), L (4.5 kb), and B (1-2 kb) flank a nonconservedsingle copy central core, cc2 (7 kb chromosome2). Independent investigations have also shown the S. pombe centromere to be made up of a unique central domain flanked by repeated elements dg ...
Shaping mitotic chromosomes: From classical concepts to molecular
... remarkable degree of chromosome condensation, even though H3S10 phosphorylation can no longer be detected in the mutant [40]. These observations imply that H3 phosphorylation cannot be the universal determinant of mitotic chromosome condensation. This conclusion is furthermore supported by the findi ...
... remarkable degree of chromosome condensation, even though H3S10 phosphorylation can no longer be detected in the mutant [40]. These observations imply that H3 phosphorylation cannot be the universal determinant of mitotic chromosome condensation. This conclusion is furthermore supported by the findi ...
PDF
... complement of intracellular organelles. However, as lens fiber cells mature they must destroy their organelles, including nuclei, in a process that has remained enigmatic for over a century, but which is crucial for the formation of the organelle-free zone in the center of the lens that assures clar ...
... complement of intracellular organelles. However, as lens fiber cells mature they must destroy their organelles, including nuclei, in a process that has remained enigmatic for over a century, but which is crucial for the formation of the organelle-free zone in the center of the lens that assures clar ...
An Adaptive Multiple Access Protocol for Broadcast Channels
... Another factor that influence handoff Area and shape of the cell An ideal situation is to have the cell configuration match the velocity of the MSs and to have a larger boundary where the handoff rate is minimal The mobility of an individual MS is difficult to predict Each MS having a different ...
... Another factor that influence handoff Area and shape of the cell An ideal situation is to have the cell configuration match the velocity of the MSs and to have a larger boundary where the handoff rate is minimal The mobility of an individual MS is difficult to predict Each MS having a different ...
Laser-Micropipet Combination for Single-Cell Analysis
... prior to sampling. For nonadherent cells, the use of electroosmotic flow (EOF) to move the cell into the capillary inlet may impact the cellular process to be measured. A large body of literature exists on the biological effects of electric fields.16-19 Electric fields as low as 1-15 V/cm can cause ...
... prior to sampling. For nonadherent cells, the use of electroosmotic flow (EOF) to move the cell into the capillary inlet may impact the cellular process to be measured. A large body of literature exists on the biological effects of electric fields.16-19 Electric fields as low as 1-15 V/cm can cause ...
BMC Microbiology
... PCR reactions were performed to confirm both the genomic and cDNA sequences of the sscmk1 gene. The genomic DNA PCR product was 1839 bp, showing the presence of an open reading frame (ORF) of 1221 bp interrupted by five introns (Figure 1). The coding sequence in this PCR product confirmed the one ob ...
... PCR reactions were performed to confirm both the genomic and cDNA sequences of the sscmk1 gene. The genomic DNA PCR product was 1839 bp, showing the presence of an open reading frame (ORF) of 1221 bp interrupted by five introns (Figure 1). The coding sequence in this PCR product confirmed the one ob ...
Different involvement of the mitochondrial, plastidial and
... in mitochondria. On the other hand, GR activity was more equally distributed in the investigated compartments: no difference in the GR activity of cytosol and plastids was detected, whereas in mitochondria this activity was only about 40% lower than in the other cellular compartments. The analysis o ...
... in mitochondria. On the other hand, GR activity was more equally distributed in the investigated compartments: no difference in the GR activity of cytosol and plastids was detected, whereas in mitochondria this activity was only about 40% lower than in the other cellular compartments. The analysis o ...
Calcium entry in Trypanosoma brucei ... arachidonic acid Abstract
... PLA2 inhibitors blocked Ca2+ entry; 3 -(4 -octadecyl)-benzoylacrylic acid (OBAA; IC50 0.4+/0.1 microM) was the most potent. We identified in live trypanosomes PLA2 activity that was sensitive to OBAA and could be stimulated by Ca2+, suggesting the presence of positive feedback control. The cell-asso ...
... PLA2 inhibitors blocked Ca2+ entry; 3 -(4 -octadecyl)-benzoylacrylic acid (OBAA; IC50 0.4+/0.1 microM) was the most potent. We identified in live trypanosomes PLA2 activity that was sensitive to OBAA and could be stimulated by Ca2+, suggesting the presence of positive feedback control. The cell-asso ...
Intercellular adhesion, signalling and the cytoskeleton
... formation of filopodia-like projections packed with bundles of actin (Fig. 2b). These projections were postulated to promote cells to seek, find and literally grasp onto their neighbours. The use of filopodial projections seems to be a conserved intermediate stage in the process of joining sheets of ...
... formation of filopodia-like projections packed with bundles of actin (Fig. 2b). These projections were postulated to promote cells to seek, find and literally grasp onto their neighbours. The use of filopodial projections seems to be a conserved intermediate stage in the process of joining sheets of ...
CYTOCHALASIN B: ASPECTS OF PHAGOCYTOSIS IN NUTRIENT
... (not synthesized de novo by Tetrahymena (Kidder & Dewey, 1951)) can overcome the need for food vacuole formation both in the presence of cytochalasin B (present paper) and in the particle-free proteose peptone broth (Rasmussen, 1974). Summing up, phagocytosis can be significantly reduced in 2 ways, ...
... (not synthesized de novo by Tetrahymena (Kidder & Dewey, 1951)) can overcome the need for food vacuole formation both in the presence of cytochalasin B (present paper) and in the particle-free proteose peptone broth (Rasmussen, 1974). Summing up, phagocytosis can be significantly reduced in 2 ways, ...
The relative efficiency of homology
... these sister chromatid linkages and/or maintain a bipolar mitotic spindle, can cause chromosomal instability (CIN) or cell death (3,4). Thus, characterizing the factors and pathways that are important for these aspects of anaphase will provide insight into genome maintenance. Decatenation stress cau ...
... these sister chromatid linkages and/or maintain a bipolar mitotic spindle, can cause chromosomal instability (CIN) or cell death (3,4). Thus, characterizing the factors and pathways that are important for these aspects of anaphase will provide insight into genome maintenance. Decatenation stress cau ...
Retinoic acid receptor alpha drives cell cycle progression and is
... Although these data indicate a pressing need for new therapeutic approaches in PTCL, attempts to improve outcomes using alternative chemotherapy regimens have been disappointing. Targeted therapies offer promise, but data on drug and patient selection are limited [3]. Therefore, the identification a ...
... Although these data indicate a pressing need for new therapeutic approaches in PTCL, attempts to improve outcomes using alternative chemotherapy regimens have been disappointing. Targeted therapies offer promise, but data on drug and patient selection are limited [3]. Therefore, the identification a ...
THE PLAY ABOUT A PLANT CELL, AN ANIMAL CELL, AND A
... Cell Membrane: I do what I have to do. It is my job, you know, to keep things in that aren’t on the exit list?!?!? Oxy: Oh I am so sorry I should…probably… get going. Cell Membrane: So soon?????? Oxy: Well maybe there is time for one more question? Cell Membrane: Sure! Oxy: What’s this colorless, je ...
... Cell Membrane: I do what I have to do. It is my job, you know, to keep things in that aren’t on the exit list?!?!? Oxy: Oh I am so sorry I should…probably… get going. Cell Membrane: So soon?????? Oxy: Well maybe there is time for one more question? Cell Membrane: Sure! Oxy: What’s this colorless, je ...
Unequal division in Saccharomyces cerevisiae and its implications
... personnal communication). The cdc 28 mediated step has been termed "start" because it controls the commitment of the cell to division (12). The experiments that demonstrated a correlation between completion of the start event and the attainment of a critical cell size in S. cerevisiae involved shift ...
... personnal communication). The cdc 28 mediated step has been termed "start" because it controls the commitment of the cell to division (12). The experiments that demonstrated a correlation between completion of the start event and the attainment of a critical cell size in S. cerevisiae involved shift ...
Asymmetric Cell Divisions: Zygotes of Fucoid Algae as a
... uppermost cell in this file becomes part of the root meristem and the remaining cells form the suspensor, a structure that attaches the embryo to the ovule (Laux et al. 2004; Souter and Lindsey 2000; Torres-Ruiz 2004). Although the developmental pattern that is set up by the first zygotic cell divisio ...
... uppermost cell in this file becomes part of the root meristem and the remaining cells form the suspensor, a structure that attaches the embryo to the ovule (Laux et al. 2004; Souter and Lindsey 2000; Torres-Ruiz 2004). Although the developmental pattern that is set up by the first zygotic cell divisio ...
Centrosome Biology: A SAS-sy Centriole in the Cell Cycle Dispatch
... holds the two centrioles together in their orthogonal orientation, but the action of the kinase Cdk2 and its associated cyclins is required for centriole separation and for the duplication process in general (reviewed in [5]). The classic experiments of Mazia et al. [6], along with a more recent stu ...
... holds the two centrioles together in their orthogonal orientation, but the action of the kinase Cdk2 and its associated cyclins is required for centriole separation and for the duplication process in general (reviewed in [5]). The classic experiments of Mazia et al. [6], along with a more recent stu ...
SP600125 Selectively Inhibits Histone H3
... INTRODUCTION. The role played by histone modifications in transcriptional regulation is one recent area of interest in the study of gene expression. These modifications collectively influence a web of regulatory events, and their interconnectedness has led to the hypothesis that there is a “histone ...
... INTRODUCTION. The role played by histone modifications in transcriptional regulation is one recent area of interest in the study of gene expression. These modifications collectively influence a web of regulatory events, and their interconnectedness has led to the hypothesis that there is a “histone ...
The Distribution of Polycomb-Group Proteins During Cell Division
... multicolor confocal fluorescence microscopy. All three proteins are localized in complex patterns of 100 or more loci throughout most of the interphase nuclear volume. The rather narrow distribution of the protein intensities in the vast majority of loci argues against a PcG-mediated sequestration o ...
... multicolor confocal fluorescence microscopy. All three proteins are localized in complex patterns of 100 or more loci throughout most of the interphase nuclear volume. The rather narrow distribution of the protein intensities in the vast majority of loci argues against a PcG-mediated sequestration o ...
Biochemical switches in the cell cycle
A series of biochemical switches control transitions between and within the various phases of the cell cycle. The cell cycle is a series of complex, ordered, sequential events that control how a single cell divides into two cells, and involves several different phases. The phases include the G1 and G2 phases, DNA replication or S phase, and the actual process of cell division, mitosis or M phase. During the M phase, the chromosomes separate and cytokinesis occurs.The switches maintain the orderly progression of the cell cycle and act as checkpoints to ensure that each phase has been properly completed before progression to the next phase. For example, Cdk, or cyclin dependent kinase, is a major control switch for the cell cycle and it allows the cell to move from G1 to S or G2 to M by adding phosphate to protein substrates. Such multi-component (involving multiple inter-linked proteins) switches have been shown to generate decisive, robust (and potentially irreversible) transitions and trigger stable oscillations. As a result, they are a subject of active research that tries to understand how such complex properties are wired into biological control systems.