Iron vs Ferritin
Nrog tag nrho cov tshuaj nyob hauv lub qab ntuj khwb, muaj qee lub ntsiab lus tseem ceeb rau kev ua haujlwm zoo ntawm cov kab mob. Hlau yog ib qho ntawm cov khoom tsim nyog rau tag nrho cov tsiaj nyob. Nws yog ib qho tseem ceeb los tswj cov theem ntawm cov ntsiab lus hauv peb lub cev. Tshaj lossis tsis muaj cov no ntau dua li qub tuaj yeem ua rau muaj kab mob. Feem ntau, cov proteins koom nrog hauv kev tswj cov qib ntawm cov khoom hauv cov kab mob. Ferritin yog ib qho protein ntau uas cuam tshuam nrog kev tswj cov hlau.
Iron
Hlau yog hlau nyob rau hauv d thaiv nrog lub cim Fe. Nws yog ib qho ntawm feem ntau cov ntsiab lus tsim lub ntiaj teb thiab muaj ntau ntau nyob rau hauv lub puab thiab sab hauv lub ntiaj teb core. Nws yog qhov thib plaub tshaj plaws nyob rau hauv lub ntiaj teb crust. Cov khoom hlau ntshiab muaj qhov ci ntsa iab grey tab sis thaum raug huab cua thiab dej nws tsim cov hlau oxide uas feem ntau hu ua xeb.
Tus lej atomic ntawm cov hlau yog 26, thiab nws yog cov hlau hauv thawj qhov kev hloov pauv hlau. Lub teeb tsa hluav taws xob ntawm cov hlau yog [Ar] 3d6 4s2 Hlau muaj plaub qhov isotopes ruaj khov lawm. Lawv yog 54Fe, 56Fe, 57Fe thiab 58 Fe. Ntawm cov no, cov isotope tshaj plaws yog 56 Fe. Hlau muaj oxidation xeev xws li −2 txog +8. Ntawm cov +2 thiab +3 daim ntawv no feem ntau. +2 oxidation daim ntawv ntawm hlau yog hu ua ferrous thiab +3 daim ntawv hu ua ferric. Cov ions no nyob rau hauv daim ntawv ntawm ionic crystals, uas yog tsim nrog ntau yam anions.
Cov kab mob lom neeg xav tau hlau rau ntau lub hom phiaj. Piv txwv li, nyob rau hauv tib neeg, ferrous yog pom raws li ib tug chelate agent nyob rau hauv hemoglobin. Nws tseem yog ib qho tseem ceeb rau chlorophyll synthesis hauv cov nroj tsuag. Li no, thaum muaj qhov tsis txaus ntawm cov ion no, cov kab ke lom neeg muaj ntau yam kab mob. Hlau, ua hlau, muaj thermal conductivity thiab hluav taws xob zoo. Lub purity ntawm cov qauv hlau cuam tshuam rau cov neeg kho tshuab lub zog ntawm nws. Thaum cov pa roj carbon ntau dua hauv cov hlau, nws qhov hardness thiab tensile zog yog nce.
Ferritin yog cov protein uas muaj nyob hauv cov hlwb uas tswj hwm cov hlau. Nws txoj haujlwm yog khaws cov hlau thiab tso tawm thaum tsim nyog. Hlau tswj yog ua raws li kev tswj hauv cov hlwb los ntawm cov protein no. Los ntawm tus nqi ntawm ferritin hauv hlwb, peb tuaj yeem kwv yees tus nqi ntawm cov hlau tam sim no. Qhov no yog ib qho protein ntau rau tag nrho cov kab mob nyob. Tsis tsuas yog cov tsiaj thiab cov nroj tsuag siab dua, tab sis kuj algae thiab kab mob tsim cov ferritin.
Ferritin yog cov protein globular muaj 24 sub units. Nws loj yog 450 kDa. Thaum ferritin tsis ua ke nrog hlau, nws yog hu ua apoferritin. Ferritin khaws cov hlau, kom cov hlau ntau dhau yuav tsis ua rau cov hlwb. Nws kuj thauj hlau mus rau qhov chaw uas yuav tsum tau hlau thiab tso tawm. Thaum muaj qib qis ntawm ferritin, muaj kev pheej hmoo rau kev tsis muaj hlau, thiab qhov no tuaj yeem ua rau ntshav ntshav.
Iron thiab Ferritin txawv li cas?
• Hlau yog ib yam tshuaj, thiab ferritin yog protein.
• Yog li, ferritin muaj qhov hnyav dua molar uas hlau.
• Ferritin tswj kev cia thiab tso tawm cov hlau hauv cov hlwb.
