نتایج جستجو برای: wiskott
تعداد نتایج: 1772 فیلتر نتایج به سال:
The 70 C-terminal amino acids of Wiskott-Aldrich syndrome protein (WASp WA) activate the actin nucleation activity of the Arp2/3 complex. WASp WA binds both the Arp2/3 complex and actin monomers, but the mechanism by which it activates the Arp2/3 complex is not known. We characterized the effect of WASp WA on actin polymerization in the absence and presence of the human Arp2/3 complex. WASp WA ...
Peptide recognition modules mediate many protein-protein interactions critical for the assembly of macromolecular complexes. Complete genome sequences have revealed thousands of these domains, requiring improved methods for identifying their physiologically relevant binding partners. We have developed a strategy combining computational prediction of interactions from phage-display ligand consen...
In studies aimed at further characterizing the cellular immunodeficiency of the Wiskott-Aldrich syndrome (WAS), we found that T lymphocytes from WAS patients display abnormal chemotaxis in response to the T-cell chemoattractant stromal cell-derived factor (SDF)-1. The Wiskott- Aldrich syndrome protein (WASP), together with the Rho family GTPase Cdc42, control stimulus-induced actin cytoskeleton...
Arp2/3 complex is believed to induce de novo nucleation of actin filaments at the edge of motile cells downstream of WASp family proteins. In this study, the signaling pathways leading to Arp2/3 complex activation, actin assembly, and shape change were investigated in platelets isolated from patients with Wiskott-Aldrich Syndrome (WAS), that is, who lack WASp, and in WASp-deficient mouse platel...
Short microvilli cover the surfaces of circulating mammalian lymphocytes. The surfaces of monocytes and neutrophils are very different, containing ruffles as their predominant structure. In this study, we present the first quantitative characterization of lymphocyte microvilli. From analysis of scanning electron micrographs, we find that median microvillar length and surface density range from ...
Many cryptic species have been discovered in various taxonomic groups based on molecular phylogenetic analyses and mating experiments. Some sympatric cryptic species share equivalent resources, which contradicts the competitive exclusion principle. Two major theories have been proposed to explain the apparent lack of competitive exclusion, i.e. niche-based coexistence and neutral model, but a c...
Wiskott-Aldrich syndrome (WAS) is an X-linked immunodeficiency disorder with no clinical or immunologic abnormalities in carrier famales. The defective gene has been localized to proximal Xp. Carrier females have nonrandom use of the X chromosome in granulocytes, lymphocytes, and monocytes. We have used the probe M27p. which detects both a variable number tandem repeat polymorphism and methylat...
Objective. The aim of this paper is to report the case of Wiskott-Aldrich syndrome (WAS) that presented with unusual laboratory features. Clinical Presentation and Intervention. Male neonate admitted with symptoms related to thrombocytopenia, whose initial diagnosis was considered as neonatal alloimmune thrombocytopenia and JMML (juvenile myelomonocytic leukemia) but subsequently diagnosis was ...
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