Rock Cycle
Mostrando 13-24 de 29 artigos, teses e dissertações.
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13. Estudos sedimentológicos e o contexto estrutural da formação Serra do Martins, nos platôs de Portalegre, Martins e Santana/RN
This dissertation deals with sedimentological and structural framework of the siliciclastic rock of the Serra do Martins Formation (FSM) in the Portalegre, Martins and Santana plateau, located to the south of Potiguar Basin, in the southwest and central Rio Grande do Norte state. This formation, regarded as of Oligo-Miocene age based on intrusive relations o
Publicado em: 1999
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14. Petrologia dos granitóides brasilianos associados à zona de cisalhamento Remígio-Pocinhos(PB)
The Brasiliano Cycle in the Seridó Belt (NE Brazil) is regarded mostly as a crustal reworking event, characterized by transcurrent or transpressional shear zones which operated under high temperature and low pressure conditions. In the eastern domain of this belt- the so-called São José de Campestre Massif (SJCM), a transtensional deformation regime is ev
Publicado em: 1998
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15. Suppression of p160ROCK bypasses cell cycle arrest after Aurora-A/STK15 depletion
Alterations in the expression and activity of the centrosomal kinase, Aurora-A/serine/threonine kinase 15 (STK15), affect genomic stability, disrupt the fidelity of centrosome duplication, and induce cellular transformation. Here, we provide evidence that p160ROCK, a Rho-associate serine/threonine kinase, associates with Aurora-A in a protein complex with ot
National Academy of Sciences.
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16. TGF-β-induced RhoA and p160ROCK activation is involved in the inhibition of Cdc25A with resultant cell-cycle arrest
The ability of the transforming growth factor β (TGF-β) signaling pathways to inhibit proliferation of most cells while stimulating proliferation of others remains a conundrum. In this article, we report that the absence of RhoA and p160ROCK activity in fibroblastic NIH 3T3 cells and its presence in epithelial NMuMG cells can at least partially explain the
National Academy of Sciences.
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17. RhoE Inhibits Cell Cycle Progression and Ras-Induced Transformation
Rho GTPases are major regulators of cytoskeletal dynamics, but they also affect cell proliferation, transformation, and oncogenesis. RhoE, a member of the Rnd subfamily that does not detectably hydrolyze GTP, inhibits RhoA/ROCK signaling to promote actin stress fiber and focal adhesion disassembly. We have generated fibroblasts with inducible RhoE expression
American Society for Microbiology.
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18. Rock-scissors-paper and the survival of the weakest.
In the children's game of rock-scissors-paper, players each choose one of three strategies. A rock beats a pair of scissors, scissors beat a sheet of paper and paper beats a rock, so the strategies form a competitive cycle. Although cycles in competitive ability appear to be reasonably rare among terrestrial plants, they are common among marine sessile organ
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19. ROCK Mediates Phorbol Ester-induced Apoptosis in Prostate Cancer Cells via p21Cip1 Up-regulation and JNK*
It is established that androgen-dependent prostate cancer cells undergo apoptosis upon treatment with phorbol esters and related analogs, an effect primarily mediated by PKCδ. Treatment of LNCaP prostate cancer cells with phorbol 12-myristate 13-acetate (PMA) causes a strong and sustained activation of RhoA and its downstream effector ROCK (Rho kinase) as w
American Society for Biochemistry and Molecular Biology.
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20. Cytosolic Retention of Phosphorylated Extracellular Signal-Regulated Kinase and a Rho-Associated Kinase-Mediated Signal Impair Expression of p21Cip1/Waf1 in Phorbol 12-Myristate-13- Acetate-Induced Apoptotic Cells
In response to treatment with phorbol-12-myristate-13-acetate (PMA), the half-population of erythromyeloblast D2 cells, a cytokine-independent variant of TF-1 cells, displayed adhesion and differentiated into a monocyte/macrophage-like morphology, while the other half-population remained in suspension and underwent apoptosis. Expression of the cell cycle inh
American Society for Microbiology.
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21. Cell cycle kinetics in pterygium at three latitudes.
The cell cycle kinetics of 93 specimens of pterygial tissue, as well as 19 specimens of normal conjunctiva, from patients at three sites representing three different latitudes (Singapore, 1 degree; Hong Kong, 22 degrees; and Little Rock, Arkansas, 34 degrees) were evaluated by flow cytometry. The results showed no difference in cellular proliferation pattern
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22. Cross-talk between Ras and Rho signalling pathways in transformation favours proliferation and increased motility
Transformation by oncogenic Ras requires the function of the Rho family GTPases. We find that Ras-transformed cells have elevated levels of RhoA-GTP, which functions to inhibit the expression of the cell cycle inhibitor p21/Waf1. These high levels of Rho-GTP are not a direct consequence of Ras signalling but are selected for in response to sustained ERK–MA
Oxford University Press.
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23. Microbiological Analysis of Rock Cod (Sebastes spp.) Stored Under Elevated Carbon Dioxide Atmospheres
The numbers and types of microorganisms on fresh rock cod fillets and fillets stored in air or in a modified atmosphere (MA; 80% CO2, 20% air) at 4°C were compared. Samples were analyzed after 0, 7, 14, and 21 days of storage. The isolation plates were incubated aerobically, anaerobically, or under MA at 4, 20, or 35°C. After 7 days of storage in air, the
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24. The apparent coupling between synthesis and posttranslational modification of Escherichia coli acyl carrier protein is due to inhibition of amino acid biosynthesis.
Acyl carrier protein (ACP) is modified on serine 36 by the covalent posttranslational attachment of 4'-phosphopantetheine from coenzyme A (CoA), and this modification is required for lipid biosynthesis. Jackowski and Rock (J. Biol. Chem 258:15186-15191, 1983) reported that upon depletion of the CoA pool by starvation for a CoA precursor, no accumulation of t