Results 91 to 100 of about 382,564 (207)

Iron – a key nexus in the virulence of Aspergillus fumigatus

Frontiers in Microbiology, 2012
Iron is an essential but in excess toxic nutrient. Therefore, fungi evolved fine-tuned mechanisms for uptake and storage of iron, such as the production of siderophores (low-molecular mass iron-specific chelators).
Hubertus eHaas
doaj   +1 more source

Siderophore-mediated iron uptake in mycobacteria [PDF]

, 1993
Iron is vital for the survival and proliferation of microorganisms, while mycobacteria also require this element for their survival within the host. To meet the demand for iron, mycobacteria synthesise and utilise specific high-affinity iron-binding ...
Raghu, B, Raghupati Sarma, G, Venkatesan, P   +2 more
core  

Branding Practices on Four Dairies in Kantale, Sri Lanka. [PDF]

, 2018
Hot-iron branding is illegal in Sri Lanka, but is still commonly used to identify dairy herds in extensive farming systems, which are primarily located in the countrys Dry Zone.
Adcock, Sarah, Rajapaksha, Eranda, Tucker, Cassandra, Weerasinghe, Gayani   +3 more
core   +2 more sources

Cloning and characterization of the iron uptake gene iutA from avian Escherichia coli

Brazilian Archives of Biology and Technology, 2008
The aim of this work was to isolate, clone and characterize the iron uptake gene iutA from avian pathogenic E. coli (APEC). The iutA gene was isolated from the strain APEC 9, serotype O2:H9, which was cloned in the expression vector pET101/D-TOPO.
Dorismey Vieira Tokano, Marisa Emiko Kawaichi, Emerson José Venâncio, Marilda Carlos Vidotto   +3 more
doaj   +1 more source

Iron biogeochemistry across marine systems progress from the past decade [PDF]

, 2010
Based on an international workshop (Gothenburg, 14–16 May 2008), this review article aims to combine interdisciplinary knowledge from coastal and open ocean research on iron biogeochemistry. The major scientific findings of the past decade are structured
Achterberg, E. P., Ardelan, M. V., Baker, A. R., Breitbarth, E., Bucciarelli, E., Chever, F., Croot, P. L., Duggen, S., Gledhill, M., Hassellöv, M., Hassler, C., Hoffmann, L. J., Hunter, K. A., Hutchins, D. A., Ingri, J., Jickells, T., Lohan, M. C., Nielsdό, Sarthou, G., Schoemann, V., Trapp, J. M., Turner, D. R., Ye, Ying   +22 more
core   +5 more sources

Lipoprotein SPD_1609 of Streptococcus pneumoniae Promotes Adherence and Invasion to Epithelial Cells Contributing to Bacterial Virulence

Frontiers in Microbiology, 2019
In most bacteria, iron plays a vital role in pathogenesis processes. To support survival and infection, Streptococcus pneumoniae has evolved three ABC transporters, PiaABC, PiuABC, and PitABC. Moreover, indirect evidence supports that operon 804 may be a
Xiao-Yan Yang, Xiao-Yan Yang, Nan Li, Jing-Yu Xu, Xuesong Sun, Qing-Yu He   +5 more
doaj   +1 more source

Discovery Prospects for a Supernova Signature of Biogenic Origin

, 2011
Approximately 2.8 Myr before the present our planet was subjected to the debris of a supernova explosion. The terrestrial proxy for this event was the discovery of live atoms of 60Fe in a deep-sea ferromanganese crust.
Basu, Bazylinski, Bosch, de Baar, Egli, Egli, Egli, Faivre, Fields, Fitoussi, Jickells, Knie, Knie, Knie, Knie, Kopp, Limongi, Limongi, Moskowitz, Nomoto, R. Egli, Rauscher, Roden, Rugel, S. Bishop, Wang, Woosley, Zachara   +27 more
core   +1 more source

Glacially derived iron is more bioavailable to Antarctic phytoplankton than other sources

Communications Earth & Environment
The bioavailability of iron from different sources to phytoplankton, driving substantial carbon dioxide uptake of the large blooms downstream of South Georgia Island, remains unknown.
Jasmin Stimpfle, Florian Koch, Berenice Ebner, Christian Völkner, Rebecca Zitoun, Camila F. Sukekava, Sylvia G. Sander, Susann Henkel, Randelle M. Bundy, Angel Ruacho, Sabine Kasten, Scarlett Trimborn   +11 more
doaj   +1 more source

Delayed hepatic uptake of multi-phosphonic acid poly(ethylene glycol) coated iron oxide measured by real-time Magnetic Resonance Imaging

, 2016
We report on the synthesis, characterization, stability and pharmacokinetics of novel iron based contrast agents for magnetic resonance imaging (MRI). Statistical copolymers combining multiple phosphonic acid groups and poly(ethylene glycol) (PEG) were ...
Berret, J. -F., Doan, B. -T., Graillot, A., Loubat, C., Mignet, N., Ramniceanu, G., Vezignol, C.   +6 more
core   +3 more sources

Pneumonia infection in mice reveals the involvement of the feoA gene in the pathogenesis of Acinetobacter baumannii

Virulence, 2018
Acinetobacter baumannii has emerged in the last decade as an important nosocomial pathogen. To identify genes involved in the course of a pneumonia infection, gene expression profiles were obtained from A.
Laura Álvarez-Fraga, Juan C. Vázquez-Ucha, Marta Martínez-Guitián, Juan A. Vallejo, Germán Bou, Alejandro Beceiro, Margarita Poza   +6 more
doaj   +1 more source