Hydra tropomyosin TROP1 is expressed in head-specific epithelial cells and is a major component of the cytoskeletal structure that anchors nematocytes

A cDNA clone encoding a 253 amino acid tropomyosin was isolated from Hydra in a differential screen for headspecific genes. The Hydra tropomyosin gene, designated trop1, is a single copy gene, lacks introns and is strongly expressed in tentacle-specific epithelial cells. Analysis of protein synthesis in head and gastric tissue indicated a high rate of tropomyosin synthesis in head tissue. Immunolocalization of tropomyosin in tentacle tissue revealed a cushion-like tropomyosin-containing structure within battery cells at the base of nematocytes. The structure appears to form part of the cytoskeletal anchor for nematocytes. Tropomyosin cushions were also observed in epithelial cells along the body column, which contain mounted stenotele nematocytes

Louis C. Wyman to John D. Feerick

Letter from Representative Louis C. Wyman to Dean John D. Feerick, regarding his scholarly article on presidential inability.https://ir.lawnet.fordham.edu/twentyfifth_amendment_correspondence/1017/thumbnail.jp

Utilidad clínica de NedAMHPlus/IBV en la valoración de la marcha. A propósito de un caso

[ES] NedAMHPlus/IBV es una aplicación software diseñada por el Instituto de Biomecánica (IBV) para ayudar al profesional clínico a realizar un análisis objetivo de la marcha de una forma sencilla, rápida y, lo que es fundamental, fácilmente interpretable ya que se centra en detectar y cuantificar los principales déficits dinámicos y cinemáticos de la misma. A través de un caso clínico se muestra la utilidad de esta aplicación en el proceso de interpretación y decisión terapéutica guiado por los resultados obtenidos con esta prueba.Peydro De Moya, MF.; Bermejo Bosch, I.; Herrera-Ligero, C.; Medina Ripoll, E.; Guerrero Ramos, D.; Andrade Celdrán, J.; Lopez Pascual, J. (2021). Utilidad clínica de NedAMHPlus/IBV en la valoración de la marcha. A propósito de un caso. Revista de Biomecánica (Online). (68):1-6. http://hdl.handle.net/10251/187405166

Determinacions del perfil genètic de les malalties neoplàstiques hematològiques

Malalties neoplàstiques hematològiques; Perfil genètic; PrecisióEnfermedades neoplásticas hematológicas; Perfil genético; PrecisiónHematological neoplastic diseases; Genetic profile; AccuracyLa patologia hematooncològica s’ha dividit en tres grups: limfoide, mieloide i leucèmia aguda limfoblàstica. S’ha definit la llista de gens adequada per a cada patologia i tots ells han estat seleccionats atenent a: La seva utilitat diagnòstica i de diagnòstic diferencial amb altres entitats i que, per tant, permetin a l’equip diagnòstic (hematòlegs, patòlegs o biòlegs) realitzar un diagnòstic ben fet. La seva utilitat pronòstica i predictiva, sempre que això comporti un canvi d’actitud terapèutica. Per exemple, indicació de trasplantament de progenitors o altres teràpies cel·lulars, canvi en el seguiment i canvi en el tipus de tractament. La seva utilitat terapèutica per a la indicació de l’ús de fàrmacs diana

LSST: from Science Drivers to Reference Design and Anticipated Data Products

(Abridged) We describe here the most ambitious survey currently planned in the optical, the Large Synoptic Survey Telescope (LSST). A vast array of science will be enabled by a single wide-deep-fast sky survey, and LSST will have unique survey capability in the faint time domain. The LSST design is driven by four main science themes: probing dark energy and dark matter, taking an inventory of the Solar System, exploring the transient optical sky, and mapping the Milky Way. LSST will be a wide-field ground-based system sited at Cerro Pach\'{o}n in northern Chile. The telescope will have an 8.4 m (6.5 m effective) primary mirror, a 9.6 deg$^2$ field of view, and a 3.2 Gigapixel camera. The standard observing sequence will consist of pairs of 15-second exposures in a given field, with two such visits in each pointing in a given night. With these repeats, the LSST system is capable of imaging about 10,000 square degrees of sky in a single filter in three nights. The typical 5$\sigma$ point-source depth in a single visit in $r$ will be $\sim 24.5$ (AB). The project is in the construction phase and will begin regular survey operations by 2022. The survey area will be contained within 30,000 deg$^2$ with $\delta<+34.5^\circ$, and will be imaged multiple times in six bands, $ugrizy$, covering the wavelength range 320--1050 nm. About 90\% of the observing time will be devoted to a deep-wide-fast survey mode which will uniformly observe a 18,000 deg$^2$ region about 800 times (summed over all six bands) during the anticipated 10 years of operations, and yield a coadded map to $r\sim27.5$. The remaining 10\% of the observing time will be allocated to projects such as a Very Deep and Fast time domain survey. The goal is to make LSST data products, including a relational database of about 32 trillion observations of 40 billion objects, available to the public and scientists around the world.Comment: 57 pages, 32 color figures, version with high-resolution figures available from https://www.lsst.org/overvie

Determinacions del perfil genètic de les malalties neoplàstiques hematològiques

Malalties neoplàstiques hematològiques; Perfil genètic; PrecisióEnfermedades neoplásticas hematológicas; Perfil genético; PrecisiónHematological neoplastic diseases; Genetic profile; AccuracyLa patologia hematooncològica s’ha dividit en tres grups: limfoide, mieloide i leucèmia aguda limfoblàstica. S’ha definit la llista de gens adequada per a cada patologia i tots ells han estat seleccionats atenent a: La seva utilitat diagnòstica i de diagnòstic diferencial amb altres entitats i que, per tant, permetin a l’equip diagnòstic (hematòlegs, patòlegs o biòlegs) realitzar un diagnòstic ben fet. La seva utilitat pronòstica i predictiva, sempre que això comporti un canvi d’actitud terapèutica. Per exemple, indicació de trasplantament de progenitors o altres teràpies cel·lulars, canvi en el seguiment i canvi en el tipus de tractament. La seva utilitat terapèutica per a la indicació de l’ús de fàrmacs diana

Development and Validation of The SMAP Enhanced Passive Soil Moisture Product

Since the beginning of its routine science operation in March 2015, the NASA SMAP observatory has been returning interference-mitigated brightness temperature observations at L-band (1.41 GHz) frequency from space. The resulting data enable frequent global mapping of soil moisture with a retrieval uncertainty below 0.040 cu m/cu m at a 36 km spatial scale. This paper describes the development and validation of an enhanced version of the current standard soil moisture product. Compared with the standard product that is posted on a 36 km grid, the new enhanced product is posted on a 9 km grid. Derived from the same time-ordered brightness temperature observations that feed the current standard passive soil moisture product, the enhanced passive soil moisture product leverages on the Backus-Gilbert optimal interpolation technique that more fully utilizes the additional information from the original radiometer observations to achieve global mapping of soil moisture with enhanced clarity. The resulting enhanced soil moisture product was assessed using long-term in situ soil moisture observations from core validation sites located in diverse biomes and was found to exhibit an average retrieval uncertainty below 0.040 cu m/cu m. As of December 2016, the enhanced soil moisture product has been made available to the public from the NASA Distributed Active Archive Center at the National Snow and Ice Data Center

The Bactofilin Cytoskeleton Protein BacM of Myxococcus xanthus Forms an Extended β-Sheet Structure Likely Mediated by Hydrophobic Interactions

Bactofilins are novel cytoskeleton proteins that are widespread in Gram-negative bacteria. Myxococcus xanthus, an important predatory soil bacterium, possesses four bactofilins of which one, BacM (Mxan_7475) plays an important role in cell shape maintenance. Electron and fluorescence light microscopy, as well as studies using over-expressed, purified BacM, indicate that this protein polymerizes in vivo and in vitro into ~3 nm wide filaments that further associate into higher ordered fibers of about 10 nm. Here we use a multipronged approach combining secondary structure determination, molecular modeling, biochemistry, and genetics to identify and characterize critical molecular elements that enable BacM to polymerize. Our results indicate that the bactofilin-determining domain DUF583 folds into an extended β-sheet structure, and we hypothesize a left-handed β-helix with polymerization into 3 nm filaments primarily via patches of hydrophobic amino acid residues. These patches form the interface allowing head-to-tail polymerization during filament formation. Biochemical analyses of these processes show that folding and polymerization occur across a wide variety of conditions and even in the presence of chaotropic agents such as one molar urea. Together, these data suggest that bactofilins are comprised of a structure unique to cytoskeleton proteins, which enables robust polymerization