Kufashaira kwe5900 madhigirii celsius uye kuomarara kwakafanana nedhaimondi kwakabatana nekabhoni: tungsten ndiyo simbi inorema, asi ine mabasa ebhayoloji-kunyanya muhuturu hunoda kupisa. Chikwata chinotungamirwa naTetyana Milojevic kubva kuFaculty of Chemistry paYunivhesiti yeVienna inoshuma kekutanga isingawanzo hutachiona-tungsten kusangana padanho renanometer. Kubva pane zvakawanikwa izvi, kwete chete tungsten biogeochemistry, asiwo kurarama kwehutachiona mukunze mamiriro ekunze kunogona kuongororwa. Mhedzisiro yacho yakaonekwa nguva pfupi yadarika mupepanhau Frontiers in Microbiology.

Sesimbi yakaoma uye isingawanzo simbi, tungsten, ine zvimiro zvayo zvinoshamisa uye nzvimbo yepamusoro yekunyungudika kwesimbi dzese, isarudzo isingambofungidzirwe kune biological system. Chete tupukanana tushoma, senge thermophilic archaea kana sero nucleus-isina ma microorganisms, akachinja kune yakanyanyisa mamiriro enzvimbo ye tungsten uye akawana nzira yekufananidza tungsten. Zvidzidzo zviviri zvichangoburwa nebiochemist uye astrobiologist Tetyana Milojevic kubva kuDhipatimendi reBiophysical Chemistry, Faculty of Chemistry paYunivhesiti yeVienna, zvinojekesa basa rinobvira rema microorganisms munzvimbo ine tungsten-yakapfuma uye inotsanangura nanoscale tungsten-microbial interface yekunyanyisa. kupisa- uye acid-inoda microorganism Metallosphaera sedula inokura ne tungsten compounds (Figures 1, 2). Ndiyo zvakare iyi microorganism inozoedzwa kuti irarame panguva yekufamba pakati penyeredzi mune ramangwana zvidzidzo munzvimbo yekunze. Tungsten inogona kuva chinhu chakakosha mune izvi.

Kubva ku tungsten polyoxometalates senge inotsigira hupenyu inorganic masisitimu kune microbial bioprocessing ye tungsten ores.

Zvakafanana neferrous sulfide mineral cells, artificial polyoxometalates (POMs) anoonekwa semasero emuchadenga mukufambisa maitiro emakemikari epamberi uye kuratidza "sehupenyu" maitiro. Nekudaro, kukosha kwePOM kune nzira dzekuchengetedza hupenyu (semuenzaniso, microbial kufema) haisati yagadziriswa. "Tichishandisa muenzaniso weMetallosphaera sedula, inokura mu acid inopisa uye inofema kuburikidza nesimbi oxidation, takaongorora kana yakaoma inorganic masisitimu akavakirwa patungsten POM masumbu anogona kuchengetedza kukura kweM. sedula uye kuburitsa cellular kupararira uye kupatsanura," anodaro Milojevic.

Masayendisiti akakwanisa kuratidza kuti kushandiswa kwetungsten-based inorganic POM Clusters inogonesa kubatanidzwa kweheterogeneous tungsten redox mhando mumaseru emicrobial. Iyo organometallic deposits painterface pakati peM. sedula neW-POM yakanyungudika kusvika kune nanometer renji panguva yekudyidzana kune zvibereko neAustrian Center yeElectron Microscopy uye Nanoanalysis (FELMI-ZFE, Graz). Zvatinowana zvinowedzera tungsten-encrusted M. sedula kune zvinyorwa zvinokura zvebiomineralized microbial species, pakati payo archaea isingawanzomiririrwa,” akadaro Milojevic. Iyo biotransformation ye tungsten mineral scheelite inoitwa neiyo yakanyanya thermoacidophile M. sedula inotungamirira pakuputsika kwechimiro che scheelite, chinotevera solubilization ye tungsten, uye tungsten mineralization ye microbial cell surface (Mufananidzo 3). Iyo biogenic tungsten carbide-senanostructures inotsanangurwa muchidzidzo inomiririra inogona kusimba nanomaterial yakawanikwa neyakachengetedzeka hutachiona-inobatsirwa dhizaini.