Two Distinct Attachment Sites for Vimentin along
... functional dichotomy of the vimentin-binding sites under in vitro conditions may reflect a vectorial assembly process whereby 10-rim filaments, although structurally apolar, acquire polar features brought about by the differential attachment to specific receptors arranged along the plasma membrane a ...
... functional dichotomy of the vimentin-binding sites under in vitro conditions may reflect a vectorial assembly process whereby 10-rim filaments, although structurally apolar, acquire polar features brought about by the differential attachment to specific receptors arranged along the plasma membrane a ...
PLANT CELL WALL PROTEINS
... chimeras might play a major role in cell adhesion during plant development. For instance, one well-characterized cell-cell recognition process involving HRGPs is the mating system of Chlamydomonas. The sexual agglutinins of Chlamydomonas mediate the initial recognition of opposite mating types. Alth ...
... chimeras might play a major role in cell adhesion during plant development. For instance, one well-characterized cell-cell recognition process involving HRGPs is the mating system of Chlamydomonas. The sexual agglutinins of Chlamydomonas mediate the initial recognition of opposite mating types. Alth ...
SNARE complexes of different composition jointly
... ABSTRACT Membrane fusion is mediated by soluble N-ethylmaleimide–sensitive factor attachment protein receptor (SNARE) complexes. Although membrane fusion is required for separating daughter cells in eukaryotic cytokinesis, the SNARE complexes involved are not known. In plants, membrane vesicles tar ...
... ABSTRACT Membrane fusion is mediated by soluble N-ethylmaleimide–sensitive factor attachment protein receptor (SNARE) complexes. Although membrane fusion is required for separating daughter cells in eukaryotic cytokinesis, the SNARE complexes involved are not known. In plants, membrane vesicles tar ...
Mutations affecting the cytoskeletal organization
... Complementation analysis of the two, third chromosome mutations, AS928 and AS1479, demonstrates that they fall into a single complementation group. Deficiency analysis maps both mutations to region 70D2-70D6. In situ hybridization maps the P-element in AS928 to region 70 and revertant analysis demon ...
... Complementation analysis of the two, third chromosome mutations, AS928 and AS1479, demonstrates that they fall into a single complementation group. Deficiency analysis maps both mutations to region 70D2-70D6. In situ hybridization maps the P-element in AS928 to region 70 and revertant analysis demon ...
Cell Wall Polysaccharides are Mislocalized to the Vacuole in
... During cell wall biosynthesis, the Golgi apparatus is the platform for cell wall matrix biosynthesis and the site of packaging, of both matrix polysaccharides and proteins, into secretory vesicles with the correct targeting information. The objective of this study was to dissect the post-Golgi traff ...
... During cell wall biosynthesis, the Golgi apparatus is the platform for cell wall matrix biosynthesis and the site of packaging, of both matrix polysaccharides and proteins, into secretory vesicles with the correct targeting information. The objective of this study was to dissect the post-Golgi traff ...
Nucleic Acid AptamerssFrom Selection in Vitro to Applications in Vivo
... FIGURE 1. Structures of some aptamers from our group. (A) Secondary structure proposed previously for the citrulline- and arginine-specific aptamers, based on covariations of selected sequences and on the chemical footprinting pattern obtained in the presence of the cognate amino acid, as well as in ...
... FIGURE 1. Structures of some aptamers from our group. (A) Secondary structure proposed previously for the citrulline- and arginine-specific aptamers, based on covariations of selected sequences and on the chemical footprinting pattern obtained in the presence of the cognate amino acid, as well as in ...
Lab Anatomy 4 In this lecture , we will be talking about sections in
... Parietal lobe and temporal separated by the lateral fissure. Showing the body of the lateral ventricle (in the parietal lobe) and the inferior horn of the lateral ventricle (in the temporal lobe). In the cavity of the body of the lateral ventricle, Body of corpus callosum and thalamus bulge from the ...
... Parietal lobe and temporal separated by the lateral fissure. Showing the body of the lateral ventricle (in the parietal lobe) and the inferior horn of the lateral ventricle (in the temporal lobe). In the cavity of the body of the lateral ventricle, Body of corpus callosum and thalamus bulge from the ...
Making parallel lines meet
... spinning-disc confocal fluorescence microscope, the tagged cellulose synthase complexes are seen as spots at the plasma membrane. Over time, the spots move (see Fig. 2A and C). The velocity, ~0.3 mm min21, along with the density of the complexes per unit area, plausibly account for rates of cellulos ...
... spinning-disc confocal fluorescence microscope, the tagged cellulose synthase complexes are seen as spots at the plasma membrane. Over time, the spots move (see Fig. 2A and C). The velocity, ~0.3 mm min21, along with the density of the complexes per unit area, plausibly account for rates of cellulos ...
Cellular lipidomics
... even within the lateral plane of the membrane. To incorporate function, cellular lipidomics must not only determine which lipids are present but also the concentration of each lipid at each specific intracellular location in time and the lipid’s interaction partners. Moreover, cellular lipidomics mus ...
... even within the lateral plane of the membrane. To incorporate function, cellular lipidomics must not only determine which lipids are present but also the concentration of each lipid at each specific intracellular location in time and the lipid’s interaction partners. Moreover, cellular lipidomics mus ...
Protection of Drosophila chromosome ends through minimal
... protection conferred by extremely short telomeric arrays in yeast or mammalian systems. KEY WORDS: Drosophila melanogaster, Telomere, Capping protein, Male germline, Spermatogenesis ...
... protection conferred by extremely short telomeric arrays in yeast or mammalian systems. KEY WORDS: Drosophila melanogaster, Telomere, Capping protein, Male germline, Spermatogenesis ...
HnRNP C1/C2 May Regulate Exon 7 Splicing in the Spinal Muscular
... which leads to the axial and limb weakness associated with muscle atrophy. SMA is caused by the homologous deletion and/or deleterious mutation of the SMN1 gene, which encodes the protein SMN (15). SMN is a component of nuclear structures known as gems, suggesting a role in RNA metabolism (7, 16, 20 ...
... which leads to the axial and limb weakness associated with muscle atrophy. SMA is caused by the homologous deletion and/or deleterious mutation of the SMN1 gene, which encodes the protein SMN (15). SMN is a component of nuclear structures known as gems, suggesting a role in RNA metabolism (7, 16, 20 ...
Centromere dynamics
... Like centromere DNA, CenH3 for the most part does not cross species boundaries. In a detailed domain-swapping analysis, Baker and Rogers [5] found that only CenH3 from highly related yeasts were able to functionally complement in a heterologous environment. By contrast, it has been reported that Cs ...
... Like centromere DNA, CenH3 for the most part does not cross species boundaries. In a detailed domain-swapping analysis, Baker and Rogers [5] found that only CenH3 from highly related yeasts were able to functionally complement in a heterologous environment. By contrast, it has been reported that Cs ...
Sperm entry is sufficient to trigger division of the
... In conclusion, we propose that cdka;1 does not affect sperm cell fate but delays the pace of the cell cycle, leading to the production of one or two sperm cells with altered chromatin composition. Determination of the timing of transcriptional onset after fertilization HTR10 is a very divergent H3 v ...
... In conclusion, we propose that cdka;1 does not affect sperm cell fate but delays the pace of the cell cycle, leading to the production of one or two sperm cells with altered chromatin composition. Determination of the timing of transcriptional onset after fertilization HTR10 is a very divergent H3 v ...
SEDS proteins are a widespread family of bacterial
... recently discovered to make PG32–35 or encode an essential lipid II biosynthetic pathway36. In all cases, these organisms contain at least one SEDS family member and a bPBP, and we hypothesize that the assembly of their cell wall is mediated by these enzymes. On the basis of these and previous find ...
... recently discovered to make PG32–35 or encode an essential lipid II biosynthetic pathway36. In all cases, these organisms contain at least one SEDS family member and a bPBP, and we hypothesize that the assembly of their cell wall is mediated by these enzymes. On the basis of these and previous find ...
Membrane Structure and Function Chapter 7 Biology
... • Later studies found problems with this model, particularly the placement of membrane proteins, which have hydrophilic and hydrophobic regions • In 1972, J. Singer and G. Nicolson proposed that the membrane is a mosaic of proteins dispersed within the bilayer, with only the hydrophilic regions ...
... • Later studies found problems with this model, particularly the placement of membrane proteins, which have hydrophilic and hydrophobic regions • In 1972, J. Singer and G. Nicolson proposed that the membrane is a mosaic of proteins dispersed within the bilayer, with only the hydrophilic regions ...
Carl R. Woese (center)
... the translation mechanism than a passive carrier of the amino acid into that mechanism (Woese 2001). It did not feel right that the code was merely an historical accident. There was too much order in the set of codon assignments for that; order which had to be explained. The problem of the genetic c ...
... the translation mechanism than a passive carrier of the amino acid into that mechanism (Woese 2001). It did not feel right that the code was merely an historical accident. There was too much order in the set of codon assignments for that; order which had to be explained. The problem of the genetic c ...
THE QUEST FOR A MESSAGE: BUDDING YEAST, A MODEL
... onset of splicing. The intron is recognized by the early spliceosomal components U1 snRNP, BBP, and Mud2 [11]. Instead, splicing is blocked at the point of recognition of the RPL30 branch site by U2 snRNP. No direct interactions have been found between L30 and splicing factors, and it is thought th ...
... onset of splicing. The intron is recognized by the early spliceosomal components U1 snRNP, BBP, and Mud2 [11]. Instead, splicing is blocked at the point of recognition of the RPL30 branch site by U2 snRNP. No direct interactions have been found between L30 and splicing factors, and it is thought th ...
Assembly of AO and DHAS - Journal of Cell Science
... cross contamination between cytosol (in the SUP), matrix and as a dimer, we next performed import experiments at lower peroxisomal membrane. temperatures to attempt to uncover mechanistic differences in Using pulse-chase and this fractionation protocol, we the import of the two substrates. At 15°C, ...
... cross contamination between cytosol (in the SUP), matrix and as a dimer, we next performed import experiments at lower peroxisomal membrane. temperatures to attempt to uncover mechanistic differences in Using pulse-chase and this fractionation protocol, we the import of the two substrates. At 15°C, ...
Viruses and Life
... first "cells" were not free-living independent organisms but instead a compartmentdependent communities of replicators and other agents. Martin and Russell have suggested that the basic biochemistry was first to emerge in these alkaline vents and only later the genetic replicators appeared to the sc ...
... first "cells" were not free-living independent organisms but instead a compartmentdependent communities of replicators and other agents. Martin and Russell have suggested that the basic biochemistry was first to emerge in these alkaline vents and only later the genetic replicators appeared to the sc ...
Mitochondrion and Chloroplast Regulation of Plant Programmed
... animal cells. Similarly, CsA has been used in plant PCD models to pharmacologically provide evidence for the existence of the PTP. CsA has been shown to inhibit Ca2+-induced swelling of potato mitochondria [64], betulinic acid-induced PCD in tracheary element cells of Zinnia elegans [51], nitric oxi ...
... animal cells. Similarly, CsA has been used in plant PCD models to pharmacologically provide evidence for the existence of the PTP. CsA has been shown to inhibit Ca2+-induced swelling of potato mitochondria [64], betulinic acid-induced PCD in tracheary element cells of Zinnia elegans [51], nitric oxi ...
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.