Qhov sib txawv tseem ceeb ntawm FAD thiab FMN yog FAD molecule muaj ob lub nucleotide Cheebtsam, hos FMN tsuas muaj ib qho nucleotide tivthaiv.
Lub sij hawm FAD sawv cev rau Flavin Adenine Dinucleotide thaum lub sij hawm FMN sawv cev rau Flavin Mononucleotide. Ob qho no yog biomolecules uas peb tuaj yeem pom hauv cov kab mob. Ntxiv mus, lawv yog cov ntawv coenzyme ntawm riboflavin.
FAD?
Lub sij hawm FAD sawv cev rau Flavin Adenine Dinucleotide. Nws yog ib qho redox-active coenzyme uas cuam tshuam nrog ntau cov proteins uas koom nrog ntau cov tshuaj tiv thaiv enzymatic hauv cov metabolism. Cov tshuaj no poob rau hauv qeb ntawm flavoprotein. Flavoproteins yog cov protein molecules uas muaj cov pab pawg flavin, uas tuaj yeem ua rau hauv daim ntawv FAD lossis FMN. Ob leeg FAD thiab FMN yog nruj nruj cofactors uas tuaj yeem txais lossis pub ob lub electrons thiab ob lub protons kom txo qis lossis pub dawb lossis lees txais ib qho hluav taws xob thiab ib qho proton, tsim cov semiquinone nruab nrab.
Daim duab 01: Cov Qauv Tshuaj ntawm FAD
Cov tshuaj formula ntawm FAD yog C27H33N9O 15P2 Cov molar mass ntawm no compound yog 785.557 mol / L. Thaum muab rho tawm, cov tshuaj no zoo li dawb, vitreous crystals. Muaj ob qhov tseem ceeb hauv FAD molecule: adenine nucleotide thiab flavin mononucleotide. Ob lub ntsiab lus no yog txuas ua ke los ntawm pawg phosphate. Nyob rau hauv no molecule, lub adenine tivthaiv yog txuas mus rau ib tug cyclic ribose ntawm thawj carbon, thiab cov phosphate pawg yog txuas mus rau lub ribose molecule ntawm tsib carbon atom.
Nrog rau FMN, Fad tuaj yeem ua tus enzyme cofactor. Ob qho no yog tsim los ntawm riboflavin. Riboflavin muaj nyob hauv cov kab mob, cov kab mob thiab cov nroj tsuag vim tias lawv tuaj yeem tsim cov molecule no. Txawm li cas los xij, eukaryotes xws li tib neeg tsis tuaj yeem tsim cov tshuaj no, yog li peb yuav tsum tau coj los ntawm sab nraud. Qhov no hu ua Vitamin B2, thiab nws muaj nyob rau hauv cov khoom noj khoom haus.
FMN yog dab tsi?
Lub sijhawm FMN sawv cev rau Flavin Mononucleotide. Nws yog biomolecule uas tsim los ntawm riboflavin (vitamin B2) los ntawm kev ua ntawm ib qho enzyme hu ua riboflavin kinase. Cov tshuaj no tuaj yeem ua haujlwm raws li pab pawg pob txha ntawm ntau yam oxidoreductases (xws li NADH dehydrogenase). Txawm li cas los xij, lub npe FMN yog kev dag ntxias vim nws tsis yog nucleotide tiag tiag vim tsis muaj glycosidic daim ntawv cog lus. Ntxiv mus, FMN yog ib tug muaj zog oxidizing tus neeg saib xyuas piv rau NAD, thiab cov compound no yog ib qho tseem ceeb nyob rau hauv ob qho tib si thiab ob chav electron hloov. FMN yog daim ntawv tseem ceeb ntawm riboflavin peb tuaj yeem pom hauv cov hlwb thiab cov ntaub so ntswg. Peb cov hlwb xav tau lub zog ntau dua los tsim cov khoom sib xyaw no, tab sis nws yog cov khoom sib xyaw ua ke piv rau riboflavin (niam txiv molecule).
Daim duab 02: Tus qauv ntawm FMN
FMN yog siv los ua zaub mov ntxiv vim nws muaj peev xwm muab cov zaub mov xim liab-txiv kab ntxwv. Lub npe rau cov xim zaub mov no yog E tooj E101a. Cov ntsev ntsev ntawm FMN muaj tus lej E E 106 thiab nws yog cov khoom noj khoom haus zoo sib xws. Cov ntsev ntsev no yooj yim thiab sai sai hloov mus ua dawb riboflavin tom qab noj. Yog li ntawd, peb tuaj yeem pom cov khoom noj ntxiv hauv cov khoom noj rau menyuam mos, jams, mis nyuj, thiab khoom qab zib.
Qhov txawv ntawm FAD thiab FMN yog dab tsi?
FAD sawv cev rau Flavin Adenine Dinucleotide thaum FMN sawv cev rau Flavin Mononucleotide. Qhov sib txawv tseem ceeb ntawm FAD thiab FMN yog tias FAD molecule muaj ob lub nucleotide Cheebtsam, thaum FMN tsuas muaj ib qho nucleotide feem. Hais txog cov ntawv thov, FAD feem ntau muaj txiaj ntsig zoo li cofactor hauv cov hlwb thiab cov ntaub so ntswg. Tab sis, FMN yog qhov tseem ceeb tshaj li cov khoom noj ntxiv hauv cov khoom noj mis nyuj, khoom qab zib, khoom noj rau menyuam yaus, rau xim txiv kab ntxwv-liab.
Hauv qab infographic qhia qhov sib txawv ntawm FAD thiab FMN hauv daim ntawv teev npe.
Summary – FAD vs FMN
FAD thiab FMN yog biomolecules peb tuaj yeem pom hauv cov kab mob lom. Qhov sib txawv tseem ceeb ntawm FAD thiab FMN yog tias FAD molecule muaj ob yam nucleotide, hos FMN tsuas muaj ib qho nucleotide tivthaiv.
