• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Golgi-targeting sequence of p230 - Journal of Cell Science
Golgi-targeting sequence of p230 - Journal of Cell Science

... mechanism to target this peripheral membane protein specifically to TGN membranes. The majority (approx. 85%) of p230 is predicted to form an α-helical coil-coiled structure, notable exceptions being the 120- and 80-amino acid amino and carboxy termini (Erlich et al., 1996) (Fig. 1). To examine the ...
An Abscisic Acid-Activated and Calcium-lndependent
An Abscisic Acid-Activated and Calcium-lndependent

... leaflets of fava bean was ~5 x 106 with 99.9% purity (calculated on a cell basis by counting a sample of ~6000 cells). The purified GCPs could respond to white light by swelling and to ABA by shrinking (data not shown), as reported previously (Fitzsimons and Weyers, 1986,1987), demonstrating that th ...
Mutant forms of the F protein of human respiratory syncytial (RS
Mutant forms of the F protein of human respiratory syncytial (RS

... by disulphide bonds (McIntosh & Chanock, 1990). Neutralizing and fusion-inhibiting MAbs to the F protein not only protect against RS virus infection in mice, cotton rats and calves (see Taylor, 1994; Walsh et al., 1984) but can clear an established infection (Tempest et al., 1991 ; see Taylor, 1994) ...
Gene trap insertion into a novel gene expressed during mouse limb
Gene trap insertion into a novel gene expressed during mouse limb

... expression in the limb. The limb has been the subject of studies for decades in the chick, because it is readily accessible to experimental manipulations in ovo. Many genes that are involved in limb development have been identified by homology screening using Drosophila probes (for review, see Tickl ...
The Assimilation of Amino-acids by Bacteria
The Assimilation of Amino-acids by Bacteria

... (Gale & Mitchell, 1947). The protein synthesis takes place only in growing cells and can be eliminated by working with well-washed suspensions of cells. The remaining metabolism (transfer of glutamic acid to the metabolic pool), which takes place in resting and growing cells, can be inhibited by sui ...
P-Glycoprotein Substrates and Antagonists Cluster into Two Distinct
P-Glycoprotein Substrates and Antagonists Cluster into Two Distinct

... in RPMI, 10% fetal calf serum, penicillin, streptomycin, and glutamine. SW620 Ad300 cells possess a multidrug-resistant phenotype and do not seem to have mechanisms of resistance other than overexpression of Pgp (25). National Cancer Institute Drug Screen database. The National Cancer Institute Drug ...
Document
Document

... precipitate seen when a supravital dye binds and cross-links ...
to get the file - Oxford Brookes University
to get the file - Oxford Brookes University

... RHD3 gene found that it is expressed in all major Arabidopsis organs, and multiple levels of regulation are employed to ensure appropriate expression of the gene (Wang et al., 2002), indicating that RHD3 is not root-hairspeci®c. The major defect in rhd3 mutants is reduced cell size, particularly in ...
Physical and Chemical Basis of Cytoplasmic Streaming
Physical and Chemical Basis of Cytoplasmic Streaming

... into two major groups with respect to the proteins involved, i.e. the actinmyosin system and the tubulin-dynein system. Cytoplasmic streaming belongs mostly to the first group. Possible roles for the tubulin-dynein system in cytoplasmic streaming have yet to be investigated. Fromthe phenomenological ...
PDF
PDF

... Fig. 1. S-photo-MO and AS-photo-MO regulate Ntla function. (A,B)Diagrams describing the mechanism of AS-photo-MO (A) and S-photo-MOs (B). (C)Molecular structure of the photo-subunit (red) and its position within the MO (green). (D,E)Lateral view of a wild-type embryo (D) and an ntlaMO injected em ...
Lecture 11 Part 2
Lecture 11 Part 2

... Hormones That Bind to Nuclear Receptor Proteins • Lipophilic steroid and thyroid hormones are attached to __________ carrier proteins. – dissociate from ___________ and diffuse across membrane – Receptors on nucleus for the lipophilic hormones are known as nuclear ______________. – Complex binds wi ...
Electrophilic Affibodies Forming Covalent Bonds to Protein Targets*DS
Electrophilic Affibodies Forming Covalent Bonds to Protein Targets*DS

... detection limit of standard immunoassays, including early markers of cancer or neurodegeneration (1, 2). Immunoassays have advanced enormously over the last 60 years, opening up whole new fields of research from the ability to detect lower and lower abundance species (3). Nearly all enzyme-linked im ...
Molecular mechanisms of Salmonella invasion
Molecular mechanisms of Salmonella invasion

Plant Physiology
Plant Physiology

... The first response of the alfalfa plant to wild-type R. meliloti is root hair deformation. Wood and Newcomb (33) have made a detailed light microscopic study of the early infection ofalfalfa root hairs by R. meliloti. They found that shepherd's crooks were visible 6 to 8 h after inoculation and that ...
Mitochondria in Lung Biology and Pathology: More than - AJP-Lung
Mitochondria in Lung Biology and Pathology: More than - AJP-Lung

... extracellular space. Mitochondria are the principal site of oxygen consumption in the ...
From signal to form: aspects of the cytoskeleton
From signal to form: aspects of the cytoskeleton

... directions; in biological terminology it is the observed axial differentiation of an organism or tissue or cell into parts with distinctive properties or form. A root hair with the mechanism for cell elongation completely localized at one site on the cell periphery is a typical polar cell. The appea ...
introduction to polyomaviruses
introduction to polyomaviruses

... Atwood, 2009). The apparent ubiquity of BKV and JCV makes it difficult to correlate seropositivity for BKV- or JCV-specific antibodies with specific disease states, such as cancer. Reports in the past four years have revealed the existence of seven more human polyomaviruses. Perhaps the most intrigu ...
ANSWER
ANSWER

... • ANSWER: this is the only organelle without a membrane, it is the site where proteins are made. • QUESTION: What is the ribosome? ...
Biofilm exopolysaccharides
Biofilm exopolysaccharides

... include both colanic acid production in Es. coli (PrigentCombaret et al., 1999) and alginate synthesis in Pseudomonas aeruginosa (Davies & Geesey, 1995), as well as secretion of a galactoglucan EPS of unknown structure in Vibrio cholerae El Tor (Watnick & Kolter, 1999). Is it possible that, because ...
Macrophages Gallinarum Survival within Infected Required for
Macrophages Gallinarum Survival within Infected Required for

... mortality that causes major economic losses in poultry production. We have reported that S. Gallinarum harbors a type VI secretion system (T6SS) encoded in Salmonella pathogenicity island 19 (SPI-19) that is required for efficient colonization of chicks. In the present study, we aimed to characteriz ...
NIH Public Access
NIH Public Access

... Hippocampal replay is thought to be essential for the consolidation of event memories in hippocampal–neocortical networks. Replay is present during both sleep and waking behavior, but while sleep replay involves the reactivation of stored representations in the absence of specific sensory inputs, aw ...
video slide
video slide

... Summary ...
Heme, Myoglobin, Hemoglobin
Heme, Myoglobin, Hemoglobin

... heme oxygenase forming biliverdin and releasing iron. The iron can be transferred to apotransferrin (the iron transport protein) in plasma or can be stored within cells as ferritin (i.e. the iron is bound to the storage protein, apoferritin). The remaining porphyrin ring (biliverdin) is degraded to ...
here - The Nebenführ Lab
here - The Nebenführ Lab

... based on the presence of ribosomes on contiguous membrane regions (Figures 3C and 3F). Stacked ER cisternae were first seen on one side of the residual Golgi stacks (Figures 3C and 3D), but later they were found on both sides (Figures 3F and 4). Such ER-Golgi “sandwiches” began to appear after 10 mi ...
PDF
PDF

... In section 1 of the Results, it has been shown that there is excess embryonic mortality between days 6 and 8, amounting to 56-1-43-2 = 12-9% (Table 6). In 12-9 % of the day 8 implants (8.4 of Table 6), embryonic structures were seen. In 8-8 % of the implants at day 6 there were embryonic cell clumps ...
< 1 ... 94 95 96 97 98 99 100 101 102 ... 1231 >

Amitosis

Amitosis (a- + mitosis) is absence of mitosis, the usual form of cell division in the cells of eukaryotes. There are several senses in which eukaryotic cells can be amitotic. One refers to capability for non-mitotic division and the other refers to lack of capability for division. In one sense of the word, which is now mostly obsolete, amitosis is cell division in eukaryotic cells that happens without the usual features of mitosis as seen on microscopy, namely, without nuclear envelope breakdown and without formation of mitotic spindle and condensed chromosomes as far as microscopy can detect. However, most examples of cell division formerly thought to belong to this supposedly ""non-mitotic"" class, such as the division of unicellular eukaryotes, are today recognized as belonging to a class of mitosis called closed mitosis. A spectrum of mitotic activity can be categorized as open, semi-closed, and closed mitosis, depending on the fate of the nuclear envelope. An exception is the division of ciliate macronucleus, which is not mitotic, and the reference to this process as amitosis may be the only legitimate use of the ""non-mitotic division"" sense of the term today. In animals and plants which normally have open mitosis, the microscopic picture described in the 19th century as amitosis most likely corresponded to apoptosis, a process of programmed cell death associated with fragmentation of the nucleus and cytoplasm. Relatedly, even in the late 19th century cytologists mentioned that in larger life forms, amitosis is a ""forerunner of degeneration"".Another sense of amitotic refers to cells of certain tissues that are usually no longer capable of mitosis once the organism has matured into adulthood. In humans this is true of various muscle and nerve tissue types; if the existing ones are damaged, they cannot be replaced with new ones of equal capability. For example, cardiac muscle destroyed by heart attack and nerves destroyed by piercing trauma usually cannot regenerate. In contrast, skin cells are capable of mitosis throughout adulthood; old skin cells that die and slough off are replaced with new ones. Human liver tissue also has a sort of dormant regenerative ability; it is usually not needed or expressed but can be elicited if needed.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report