Domain Of Attraction
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Um estimador com estrutura de U-estatística para o índice caudal de distribuições de cauda pesada
In this work we study the estimator proposed by Fan (2004) for the tail index of distributions in the domain of attraction of a -stable law with 0 <<2. This estimator has U-statistic structure and is robust and asymptotically unbiased. By using the classical tools theory of U-statistic, the consistency and the asymptotic normality of the estimator are proved
Publicado em: 2007
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2. Control of ion flux and selectivity by negatively charged residues in the outer mouth of rat sodium channels.
1. The sodium channel has a ring of negatively charged amino acids on its external face. This common structural feature of cation-selective channels has been proposed to optimize conduction by electrostatic attraction of permeant cations into the channel mouth. We tested this idea by mutagenesis of mu1 rat skeletal sodium channels expressed in Xenopus oocyte
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3. The plastocyanin binding domain of photosystem I.
The molecular recognition between plastocyanin and photosystem I was studied. Photosystem I and plastocyanin can be cross-linked to an active electron transfer complex. Immunoblots and mass spectrometric analysis of proteolytic peptides indicate that the two negative patches conserved in plant plastocyanins are cross-linked with lysine residues of a domain n
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4. Fibronectin fragments containing the RGDS cell-binding domain mediate monocyte migration into the rabbit lung. A potential mechanism for C5 fragment-induced monocyte lung accumulation.
Many inflammatory processes are characterized by an early phase of neutrophil migration and a later phase of monocyte migration into the inflammatory site. Mechanisms that govern the transition between phases are the subject of these investigations. Acute lung inflammation induced by C5 fragments in the rabbit leads to an initial neutrophil influx and plasma
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5. Frequency-Dependent Selection: The High Potential for Permanent Genetic Variation in the Diallelic, Pairwise Interaction Model
A detailed analytic and numerical study is made of the potential for permanent genetic variation in frequency-dependent models based on pairwise interactions among genotypes at a single diallelic locus. The full equilibrium structure and qualitative gene-frequency dynamics are derived analytically for a symmetric model, in which pairwise fitnesses are chiefl
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6. Cis and trans interactions of L1 with neuropilin-1 control axonal responses to semaphorin 3A
Mutations in the L1 gene induce a spectrum of human neurological disorders due to abnormal development of several brain structures and fiber tracts. Among its binding partners, L1 immunoglobulin superfamily adhesion molecule (Ig CAM) associates with neuropilin-1 (NP-1) to form a semaphorin3A (Sema3A) receptor and soluble L1 converts Sema3A-induced axonal rep
Oxford University Press.
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7. An androgen receptor mRNA isoform associated with hormone-induced cell proliferation.
The larynx of male Xenopus laevis undergoes an androgen-driven developmental transformation that enables the adult to produce his complex mate attraction song. During the early postmetamorphic period, androgen directs proliferation and differentiation of laryngeal muscle and cartilage. To explore the cellular and molecular basis of androgen control, we have
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8. Adhesion-induced domain formation by interplay of long-range repulsion and short-range attraction force: a model membrane study.
We study the role of the interplay of specific and universal forces for the adhesion of giant vesicles on solid supported membranes. To model the situation of cell adhesion, we incorporated lipopolymers (phospholipids with polyethyleneoxide headgroups) as artificial glycocalix, whereas attractive lock-and-key forces are mimicked by incorporating biotinylated
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9. Molecular analysis of the anthocyanin2 gene of petunia and its role in the evolution of flower color.
The shape and color of flowers are important for plant reproduction because they attract pollinators such as insects and birds. Therefore, it is thought that alterations in these traits may result in the attraction of different pollinators, genetic isolation, and ultimately, (sympatric) speciation. Petunia integrifolia and P. axillaris bear flowers with diff
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10. Dynamic strength of molecular adhesion bonds.
In biology, molecular linkages at, within, and beneath cell interfaces arise mainly from weak noncovalent interactions. These bonds will fail under any level of pulling force if held for sufficient time. Thus, when tested with ultrasensitive force probes, we expect cohesive material strength and strength of adhesion at interfaces to be time- and loading rate
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11. Molecular crowding enhances native state stability and refolding rates of globular proteins
The presence of macromolecules in cells geometrically restricts the available space for poplypeptide chains. To study the effects of macromolecular crowding on folding thermodynamics and kinetics, we used an off-lattice model of the all-β-sheet WW domain in the presence of large spherical particles whose interaction with the polypeptide chain is purely repu
National Academy of Sciences.
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12. A thermodynamic framework for Mg2+ binding to RNA
We present a model describing how Mg2+ binds and stabilizes specific RNA structures. In this model, RNA stabilization arises from two energetically distinct modes of Mg2+ binding: diffuse- and site-binding. Diffusely bound Mg2+ are electrostatically attracted to the strong anionic field around the RNA and are accurately described by the Poisson–Boltzmann e
The National Academy of Sciences.