Facial Nerve
... loss of lacrimal secretion. 4. Central type of facial lesion produces all the effects described above with the difference that the effects are seen on the opposite side. This is because of interruption of corticonuclear fibres from cerebral cortex to facial nerve nucleus. These are crossed fibres. T ...
... loss of lacrimal secretion. 4. Central type of facial lesion produces all the effects described above with the difference that the effects are seen on the opposite side. This is because of interruption of corticonuclear fibres from cerebral cortex to facial nerve nucleus. These are crossed fibres. T ...
how the ubiquitin–proteasome system controls transcription
... establishes the mechanism through which uH2B contributes to gene silencing, and indicates that histone ubiquitylation is an integral part of the HISTONE CODE25 that cells use to distinguish transcriptionally active from inactive chromatin. But how does ubiquitylation regulate other histone modificat ...
... establishes the mechanism through which uH2B contributes to gene silencing, and indicates that histone ubiquitylation is an integral part of the HISTONE CODE25 that cells use to distinguish transcriptionally active from inactive chromatin. But how does ubiquitylation regulate other histone modificat ...
Objectives for BIO105 Principles of Biology Mark S. Wilson Science
... - describe the basic three-dimensional structure of DNA - summarize the functions of nucleic acids - recognize each of the four macromolecules -- ascribe a molecule to one of the groups Topic: Cell Structure and Function After attending lecture, studying their notes, and reading the textbook, a stud ...
... - describe the basic three-dimensional structure of DNA - summarize the functions of nucleic acids - recognize each of the four macromolecules -- ascribe a molecule to one of the groups Topic: Cell Structure and Function After attending lecture, studying their notes, and reading the textbook, a stud ...
The Sec34/35 Golgi Transport Complex Is Related to the Exocyst
... McNew et al., 2000; Pelham, 2001). Although there are specific sets of SNARE proteins associated with each transport step, it is now clear that while they may contribute to the fidelity of fusion between membranes, other factors must also play a role. For several transport steps it has been possible ...
... McNew et al., 2000; Pelham, 2001). Although there are specific sets of SNARE proteins associated with each transport step, it is now clear that while they may contribute to the fidelity of fusion between membranes, other factors must also play a role. For several transport steps it has been possible ...
Sample pages 1 PDF
... The Arabidopsis genome has 54 SNARE genes (18 Qa-SNAREs/Syntaxins, 11 Qb-SNAREs, 8 Qc-SNAREs, 14 R-SNAREs/VAMPs and 3 SNAP-25s) (Uemura et al. 2004), many of which are plant-specific and those associated with the PM have roles in cytokinesis, hormone responses, and pathogen resistance (Collins et al ...
... The Arabidopsis genome has 54 SNARE genes (18 Qa-SNAREs/Syntaxins, 11 Qb-SNAREs, 8 Qc-SNAREs, 14 R-SNAREs/VAMPs and 3 SNAP-25s) (Uemura et al. 2004), many of which are plant-specific and those associated with the PM have roles in cytokinesis, hormone responses, and pathogen resistance (Collins et al ...
ROLE OF SPINDLE MICROTUBULES IN THE
... Sea urchin eggs are used to investigate the involvement of spindle microtubules in the mechanisms that control the timing of cell cycle events. Eggs are treated for 4 min with Colcemid at prophase of the first mitosis. No microtubules are assembled for at least 3 h, and the eggs do not divide. These ...
... Sea urchin eggs are used to investigate the involvement of spindle microtubules in the mechanisms that control the timing of cell cycle events. Eggs are treated for 4 min with Colcemid at prophase of the first mitosis. No microtubules are assembled for at least 3 h, and the eggs do not divide. These ...
Avirulence proteins from haustoria
... characteristics, which can vary between different rust and host species (Harder & Chong, 1991; Perfect & Green, 2001). This membrane provides a distinct separation between the pathogen and host, which may be important for the estab lishment of a biotrophic association (Perfect & Green, 2001; Voegel ...
... characteristics, which can vary between different rust and host species (Harder & Chong, 1991; Perfect & Green, 2001). This membrane provides a distinct separation between the pathogen and host, which may be important for the estab lishment of a biotrophic association (Perfect & Green, 2001; Voegel ...
Direct Evidence of Active and Rapid Nuclear
... elegans) culture system established by Fukuda and Komamine (1980a). In the zinnia cell cultures, single mesophyll cells transdifferentiate directly into TEs without cell division (Fukuda and Komamine, 1980b). This system is useful for studies of the processes of PCD because differentiation occurs at ...
... elegans) culture system established by Fukuda and Komamine (1980a). In the zinnia cell cultures, single mesophyll cells transdifferentiate directly into TEs without cell division (Fukuda and Komamine, 1980b). This system is useful for studies of the processes of PCD because differentiation occurs at ...
A Mechanosensory System Controls Cell Shape Changes During
... Essential life processes are heavily controlled by a variety of positive and negative feedback systems. Cytokinesis failure, ultimately leading to aneuploidy, is appreciated as an early step in tumor formation in mammals and is deleterious for all cells. Further, the growing list of cancer predispos ...
... Essential life processes are heavily controlled by a variety of positive and negative feedback systems. Cytokinesis failure, ultimately leading to aneuploidy, is appreciated as an early step in tumor formation in mammals and is deleterious for all cells. Further, the growing list of cancer predispos ...
Concentration gradient
... – transport substances much more slowly across a membrane compared to channels • the maximum rate at which these proteins can transport substances across a membrane is limited by how fast they can change shapes • Pumps hydrolyze a molecule of ATP and use the energy to transport substances across the ...
... – transport substances much more slowly across a membrane compared to channels • the maximum rate at which these proteins can transport substances across a membrane is limited by how fast they can change shapes • Pumps hydrolyze a molecule of ATP and use the energy to transport substances across the ...
Membrane Trafficking During Plant Cytokinesis
... Formation of transport vesicles involves the assembly of distinct coat complexes that drive membrane budding and the selection of cargo proteins. This process is regulated by small GTPases such as ARF (ADP-Ribosylation Factor) that are required for the formation of TGN-derived clathrin coated vesicl ...
... Formation of transport vesicles involves the assembly of distinct coat complexes that drive membrane budding and the selection of cargo proteins. This process is regulated by small GTPases such as ARF (ADP-Ribosylation Factor) that are required for the formation of TGN-derived clathrin coated vesicl ...
The Plant Extracellular Matrix: News from the Cell`s Frontier
... 1996), are also being sought. Candace Haiger (Texas Tech University) and Delmer's group showed recently that sucrose synthase (SuSy) is associated with the plasma membrane and may supply UDP-Glc directly to cellulose synthase (Amor et al., 1995). They have been examining immunolabeling patterns of m ...
... 1996), are also being sought. Candace Haiger (Texas Tech University) and Delmer's group showed recently that sucrose synthase (SuSy) is associated with the plasma membrane and may supply UDP-Glc directly to cellulose synthase (Amor et al., 1995). They have been examining immunolabeling patterns of m ...
Chapter 7 Body Systems
... • Function: Hollow protein cylinders that break down abnormal/misfolded proteins and normal proteins no longer needed by the cell ...
... • Function: Hollow protein cylinders that break down abnormal/misfolded proteins and normal proteins no longer needed by the cell ...
Identification of a Mid-anaphase Checkpoint in
... Studies in populations of budding yeast, after activation of a facultative, dicentric chromosome are also indicative of a mid-anaphase cell cycle checkpoint which can delay progression through mitosis (Neff and Burke, 1992; Brock and Bloom, 1994). These dicentric chromosomes contain two centromeres, ...
... Studies in populations of budding yeast, after activation of a facultative, dicentric chromosome are also indicative of a mid-anaphase cell cycle checkpoint which can delay progression through mitosis (Neff and Burke, 1992; Brock and Bloom, 1994). These dicentric chromosomes contain two centromeres, ...
pdf: Wu et al. 2010
... has been reported in fungi [fission and budding yeasts and Aspergillus nidulans (Nasmyth et al., 2000)], Caenorhabditis elegans at both mitosis and meiosis (Siomos et al., 2001), Drosophila melanogaster (Jäger et al., 2001), various vertebrates (Papi et al., 2005; Kumada et al., 2006; Wirth et al., ...
... has been reported in fungi [fission and budding yeasts and Aspergillus nidulans (Nasmyth et al., 2000)], Caenorhabditis elegans at both mitosis and meiosis (Siomos et al., 2001), Drosophila melanogaster (Jäger et al., 2001), various vertebrates (Papi et al., 2005; Kumada et al., 2006; Wirth et al., ...
Self-Replication Mechanism by Means of Self
... genome can contain the number of cells of the organism, and so the self-replication can manage to end up with the correct number of cells. After the creation of the complete organism, or when at least two cells ar present in the circuit, a differentiation process is mandatory to let the cells expres ...
... genome can contain the number of cells of the organism, and so the self-replication can manage to end up with the correct number of cells. After the creation of the complete organism, or when at least two cells ar present in the circuit, a differentiation process is mandatory to let the cells expres ...
Document
... 21) Which of the following statements concerning endocytosis and exocytosis is CORRECT? A) These processes occur in both prokaryotes and eukaryotes. B) Phagocytosis is a type of endocytosis in which liquids are brought into the cell. C) Endocytosis produces a structure called a food vesicle. D) Was ...
... 21) Which of the following statements concerning endocytosis and exocytosis is CORRECT? A) These processes occur in both prokaryotes and eukaryotes. B) Phagocytosis is a type of endocytosis in which liquids are brought into the cell. C) Endocytosis produces a structure called a food vesicle. D) Was ...
The temperature effect during pulse application on cell membrane
... more pronounced in V79 cell line (Fig. 2). At 37 °C the cell membrane fluidity of studied cell lines differs, being less fluid in B16F1 than in V79 due to higher proportion of less fluid domain type 3 and higher order parameters of domain types 2 and 3 (Fig. 2). The morphology and size of the cells did ...
... more pronounced in V79 cell line (Fig. 2). At 37 °C the cell membrane fluidity of studied cell lines differs, being less fluid in B16F1 than in V79 due to higher proportion of less fluid domain type 3 and higher order parameters of domain types 2 and 3 (Fig. 2). The morphology and size of the cells did ...
Thalamus for the RITE
... and thalami bilaterally. The globus pallidus is also involved but not exclusively as it is in many patients with carbon monoxide poisoning. The heads of the caudate and nuclei appear normal, and there is no significant overall atrophy of the brain. These are findings that tend to exclude Huntington ...
... and thalami bilaterally. The globus pallidus is also involved but not exclusively as it is in many patients with carbon monoxide poisoning. The heads of the caudate and nuclei appear normal, and there is no significant overall atrophy of the brain. These are findings that tend to exclude Huntington ...
Challenges to our current view on chloroplasts
... stably transformed with DNA, encoding a plastid-targeted green fluorescent protein (GFP), fluorescence was found in the stroma of the plastids. Surprisingly, in addition, long, thin GFP-labeled tubules emanating from chloroplasts became visible. These structures did not contain chlorophyll and were ...
... stably transformed with DNA, encoding a plastid-targeted green fluorescent protein (GFP), fluorescence was found in the stroma of the plastids. Surprisingly, in addition, long, thin GFP-labeled tubules emanating from chloroplasts became visible. These structures did not contain chlorophyll and were ...
053107_EJC
... Associate to form a tight heterodimer Associate with the spliceosome Y14 has RNA Recognition Motif (RRM) Does not bind RNA RRM is buried at dimer interface with Mago Y14 Lau et al. Curr Bio. 2003 ...
... Associate to form a tight heterodimer Associate with the spliceosome Y14 has RNA Recognition Motif (RRM) Does not bind RNA RRM is buried at dimer interface with Mago Y14 Lau et al. Curr Bio. 2003 ...
Cell nucleus
In cell biology, the nucleus (pl. nuclei; from Latin nucleus or nuculeus, meaning kernel) is a membrane-enclosed organelle found in eukaryotic cells. Eukaryotes usually have a single nucleus, but a few cell types have no nuclei, and a few others have many.Cell nuclei contain most of the cell's genetic material, organized as multiple long linear DNA molecules in complex with a large variety of proteins, such as histones, to form chromosomes. The genes within these chromosomes are the cell's nuclear genome. The function of the nucleus is to maintain the integrity of these genes and to control the activities of the cell by regulating gene expression—the nucleus is, therefore, the control center of the cell. The main structures making up the nucleus are the nuclear envelope, a double membrane that encloses the entire organelle and isolates its contents from the cellular cytoplasm, and the nucleoskeleton (which includes nuclear lamina), a network within the nucleus that adds mechanical support, much like the cytoskeleton, which supports the cell as a whole.Because the nuclear membrane is impermeable to large molecules, nuclear pores are required that regulate nuclear transport of molecules across the envelope. The pores cross both nuclear membranes, providing a channel through which larger molecules must be actively transported by carrier proteins while allowing free movement of small molecules and ions. Movement of large molecules such as proteins and RNA through the pores is required for both gene expression and the maintenance of chromosomes. The interior of the nucleus does not contain any membrane-bound sub compartments, its contents are not uniform, and a number of sub-nuclear bodies exist, made up of unique proteins, RNA molecules, and particular parts of the chromosomes. The best-known of these is the nucleolus, which is mainly involved in the assembly of ribosomes. After being produced in the nucleolus, ribosomes are exported to the cytoplasm where they translate mRNA.