Kuwira kwa madigiri 5900 Celsius ndi kuuma ngati diamondi kuphatikiza mpweya:tungstenndi chitsulo cholemera kwambiri, komabe chili ndi ntchito zamoyo—makamaka mu tizilombo tokonda kutentha. Gulu lotsogozedwa ndi Tetyana Milojevic wochokera ku Faculty of Chemistry pa yunivesite ya Vienna lipoti koyamba kuti tipeze tizilombo toyambitsa matenda.tungstenkugwirizana pakati pa nanometer. Kutengera zomwe zapezazi, osati zokhatungstenbiogeochemistry, komanso kupulumuka kwa tizilombo tating'onoting'ono tating'onoting'ono tating'onoting'ono titha kufufuzidwa. Zotsatira zake zidawoneka posachedwa m'magaziniFrontiers mu Microbiology.

Monga chitsulo cholimba komanso chosowa,tungsten, yokhala ndi mphamvu zodabwitsa komanso malo osungunuka kwambiri kuposa zitsulo zonse, ndi chisankho chosakayikitsa kwambiri pazachilengedwe. Tizilombo tating'ono tochepa, monga thermophilic archaea kapena cell nucleus-free microorganisms, tazolowerana ndi malo owopsa a tungsten ndikupeza njira yolumikizira.tungsten. Kafukufuku waposachedwapa wa biochemist ndi astrobiologist Tetyana Milojevic wochokera ku dipatimenti ya Biophysical Chemistry, Faculty of Chemistry pa yunivesite ya Vienna, akuwunikira zomwe zingatheke kuti tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda.tungsten-olemera chilengedwe ndikufotokozera nanoscaletungsten-mawonekedwe a tizilombo tating'onoting'ono tating'onoting'ono tomwe timakonda acid Metallosphaera sedulatungstenmankhwala (Zithunzi 1, 2). Komanso ndi tizilombo tating'onoting'ono tomwe tiyesedwa kuti tipulumuke paulendo wapakati pa nyenyezi m'maphunziro amtsogolo mumlengalenga.Tungstenchikhoza kukhala chofunikira pa izi.

Kuchokeratungstenpolyoxometalates monga zochirikizira moyo organic frameworks kwa tizilombo tating'onoting'ono bioprocessing wamiyala ya tungsten

Mofanana ndi ma cell a ferrous sulfide mineral cell, ma polyoxometalates (POMs) ochita kupanga amatengedwa ngati ma cell a inorganic pothandizira njira zamakina asanakhalepo ndikuwonetsa mawonekedwe a "moyo". Komabe, kufunika kwa ma POM ku njira zochiritsira moyo (mwachitsanzo, kupuma kwa tizilombo toyambitsa matenda) sikunayankhidwebe. "Pogwiritsa ntchito chitsanzo cha Metallosphaera sedula, chomwe chimamera mu asidi otentha ndikupuma kudzera muzitsulo zachitsulo, tinafufuza ngati zovuta zowonongeka zochokera kumagulu a tungsten POM zimatha kupititsa patsogolo kukula kwa M. sedula ndikupanga kuchuluka kwa ma cell ndi kugawanika," akutero Milojevic.

Asayansi adatha kusonyeza kuti kugwiritsa ntchitotungsten-Magulu a POM opangidwa ndi inorganic amathandizira kuphatikizidwa kwamitundu yosiyanasiyanatungstenredox m'maselo ang'onoang'ono. Ma depositi a organometallic omwe amalumikizana pakati pa M. sedula ndi W-POM adasungunuka mpaka pamlingo wa nanometer panthawi yothandizana bwino ndi Austrian Center for Electron Microscopy and Nanoanalysis (FELMI-ZFE, Graz). Zomwe tapeza zimawonjezera ma tungsten-encrusted M. sedula ku zolemba zomwe zikukula za mitundu ya tizilombo tating'onoting'ono ta biomineralized, pakati pa omwe archaea samayimiridwa kawirikawiri," adatero Milojevic. The biotransformation wamchere wa tungstenscheelite yochitidwa ndi thermoacidophile M. sedula kwambiri imabweretsa kuwonongeka kwa kapangidwe ka scheelite, kenako solubilization yatungsten,nditungstenmineralization ya microbial cell surface (Chithunzi 3). The biogenictungsten carbide-monga ma nanostructures omwe akufotokozedwa mu kafukufukuyu akuyimira mawonekedwe okhazikika a nanomatadium omwe amapezedwa ndi kapangidwe kamene kamathandizidwa ndi tizilombo toyambitsa matenda.

"Zotsatira zathu zikuwonetsa kuti mafomu a M. sedulatungsten-kubereka mineralized cell pamwamba kudzera encrusting ndiTungsten carbide-ngatiMilojevic, katswiri wa sayansi ya zinthu zamoyo. Izitungsten-wozungulira wosanjikiza wopangidwa mozungulira ma cell a M. sedula amatha kuyimira njira yaying'ono yolimbana ndi zovuta zachilengedwe, monga paulendo wapadziko lonse lapansi.Tungstenencapsulation imatha kukhala ngati zida zamphamvu zoteteza ma radiation motsutsana ndi zovuta zachilengedwe. Milojevic anamaliza kunena kuti: “Zida zazing’onoting’ono za tungsten zimatithandiza kuti tipitirize kuphunzira za kupulumuka kwa tizilombo toyambitsa matenda amenewa m’mlengalenga.