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Tag: "iron" at biology news

Scientists find missing enzyme for tuberculosis iron scavenging pathway

...g enzyme" from the pathway for biosynthesis of the iron scavenging agent mycobactin," recalls Dr. Baker. "Mycobactin is a small molecule which binds iron very tightly. Bacteria synthesize it so that they can acquire the iron they need to grow ?it is secr...

Iron Deficiency Sparks Dramatic Changes In Gene Expression

...strated that iron-starved cellspreserve the little iron they possess by shutting down the major ironusers ...ly thetreatment of serious disorders caused by low iron levels.Results of his study, funded by the National Institutes of Health, arepublished in the Jan. 1...

Imaging Lymph Nodes with Nanoparticles

...e nanoparticles contain a centralsuperparamagnetic iron oxide core and are covered by dextran, impartinglong circulation times and biocompatibility. When injectedintravenously, the nanoparticles localize to lymphoid tissue, and areinternalized into macrophages. There is then a decrease in signalintensity ...

Growth in the sea comes down to a struggle for iron

Scientists know that injecting iron into some major regions of the oceans can stimulat...s happens is unclear, but the answer could be that iron sets off a kind of chemical warfare in the marine ecosystem, according to University of Maine oceano...

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