Qhov sib txawv tseem ceeb ntawm cytosine thiab cysteine yog tias cytosine yog ib qho ntawm tsib lub hauv paus nitrogenous pom hauv DNA thiab RNA thaum cysteine yog ib qho tsis tseem ceeb amino acid.
Cytosine thiab cysteine yog ob hom tseem ceeb molecules. Cytosine yog lub hauv paus nitrogenous uas yog pyrimidine derivative. Nws yog tsim nyog los tsim cytosine nucleotides, uas yog lub tsev blocks ntawm DNA thiab RNA. Cysteine, ntawm qhov tod tes, yog ib qho tsis tseem ceeb amino acid uas muaj leej faj. Cysteine yog xav tau rau kev tsim cov protein, detoxification, thiab ntau yam metabolic zog.
YCytosine yog dab tsi?
Cytosine yog lub hauv paus nitrogenous pom hauv DNA thiab RNA. Nws yog lub hauv paus pyrimidine uas muaj tsuas yog ib lub nplhaib uas muaj nitrogen, zoo ib yam li thymine thiab uracil. Muaj ob qhov hloov pauv txuas rau lub nplhaib ntawm cytosine. Yog li, nws muaj pawg amine ntawm C4 thiab pawg keto ntawm C2. Cytosine tsim peb daim ntawv cog lus hydrogen nrog guanine hauv cov hlua txuas ntxiv ntawm DNA ob lub helix. Cov tshuaj formula ntawm cytosine yog C4H5N3O. Nws qhov hnyav molecular yog 111.1 g / mol.
Daim duab 01: Cytosine
Cytosine khi nrog ribose txhawm rau tsim nucleoside cytidine thiab nrog deoxyribose los tsim deoxycytidine. Lub nucleotide ntawm cytosine hauv DNA muaj peb yam: cytosine puag, deoxyribose thiab phosphate pawg. Cytosine tuaj yeem hloov mus rau hauv uracil, ua qhov hloov pauv hloov pauv, vim tias nws yog qhov tsis ruaj khov. Nws tseem tuaj yeem raug methylated rau hauv 5-methylcytosine los ntawm ib qho enzyme hu ua DNA methyltransferase.
Cytosine yog ib feem ntawm cov nucleotide hu ua cytidine triphosphate (CTP) uas tuaj yeem ua tus co-factor rau enzymes thiab tuaj yeem hloov cov phosphate los hloov adenosine diphosphate (ADP) rau adenosine triphosphate (ATP).
YCysteine yog dab tsi?
Y Cysteine yog ib qho tsis tseem ceeb amino acid uas tseem yog hydrophilic amino acid. Cov tshuaj formula ntawm cysteine yog C
3H7NO2S, thiab nws qhov hnyav molecular yog 121.15 g. /mol. Cysteine muaj sulfur. Cysteine coded nyob rau hauv mRNA los ntawm UGU thiab UGC codons. Yog tias muaj cov methionine txaus, tib neeg lub cev tuaj yeem tsim cov cysteine nyob rau hauv cov xwm txheej ntawm lub cev. Txij li thaum tib neeg lub cev tuaj yeem ua cysteine, nws raug cais raws li cov amino acid tsis tseem ceeb. Lub cev siv cysteine los ua lwm yam amino acids.
Daim duab 02: Cysteine
Y Cysteine muaj nyob hauv cov zaub mov muaj protein ntau. Cysteine yog ib qho precursor rau antioxidant glutathione. Ntxiv mus, nws yog ib tug precursor rau hlau-sulfur pawg. Hauv kev lag luam tshuaj thiab kev tu tus kheej, cysteine yog siv los ua tus thawj coj. Tsis tas li ntawd, cysteine yog qhov muaj txiaj ntsig zoo thaum txo cov tshuaj lom ntawm cawv kom txo qis kev puas siab puas ntsws thiab hangover. Tsis tas li ntawd xwb, cysteine tseem ceeb hauv kev tsim cov collagen, nrog rau cov tawv nqaij elasticity thiab kev ntxhib los mos.
Dab tsi zoo sib xws ntawm Cytosine thiab Cysteine?
- Ob leeg cytosine thiab cysteine yog tsim nyob rau hauv tib neeg lub cev.
- Lawv tseem ceeb thiab ua haujlwm ntau hauv tib neeg lub cev.
Qhov txawv ntawm Cytosine thiab Cysteine yog dab tsi?
Cytosine yog lub hauv paus nitrogenous lossis lub hauv paus ntawm cytosine nucleotides hauv DNA thiab RNA thaum cysteine yog sulfur-muaj amino acid uas yog hom tsis tseem ceeb. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm cytosine thiab cysteine . C4H5N3O yog cov tshuaj formula ntawm cytosine thaum C3 H7NO2S is the chemical formula of cysteine.
Cov lus qhia hauv qab no qhia ntau qhov sib txawv ntawm cytosine thiab cysteine.
Summary – Cytosine vs Cysteine
Cytosine yog lub hauv paus nitrogenous pom hauv DNA thiab RNA. Nws tsim peb daim ntawv cog lus hydrogen nrog guanine hauv cov hlua txuas ntxiv ntawm DNA ob chav helix. Cysteine yog ib qho sulfur-muaj amino acid uas yog cais raws li tsis tseem ceeb. Yog li, tib neeg lub cev tuaj yeem tsim cov cysteine yog tias muaj methionine. Cysteine yog ib qho tseem ceeb rau kev tsim cov protein, detoxification thiab lwm yam kev ua haujlwm metabolic. Yog li, qhov no qhia txog qhov sib txawv ntawm cytosine thiab cysteine.
