2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Lub siab yog qhov chaw tseem ceeb rau kev hloov pauv. Tag nrho cov amino acids tuaj yeem hloov pauv tsuas yog lysine, threonine, proline thiab hydroxy proline. Txhua qhov kev hloov pauv hloov pauv hloov pauv tau.
Kev hloov pauv hauv lub cev li cas?
Lub siab yog qhov chaw tseem ceeb ntawm cov amino acid metabolism, tab sis lwm cov ntaub so ntswg, xws li lub raum, cov hnyuv me, cov leeg, thiab cov ntaub so ntswg adipose, koom nrog. Feem ntau, thawj kauj ruam hauv kev tawg ntawm cov amino acids yog kev sib cais ntawm cov amino pawg los ntawm cov pob txha pob txha, feem ntau yog los ntawm cov tshuaj tiv thaiv transamination.
Puas hloov pauv tshwm sim hauv cytosol lossis mitochondria?
Valine, leucine, thiab isoleucine degradation
Valine, leucine, thiab isoleucine yog cov saw hlau amino acids (BCAAs) thiab lawv txoj kev degradation feem ntau nyob hauv cheeb tsam mitochondria tsuas yog thawj qhov kev hloov pauv. kauj ruam, uas tshwm sim hauv cytoplasm (8).
Puas hloov pauv tshwm sim hauv cytosol?
Alpha-ketoglutarate qee zaum sau ua 2-oxoglutarate. Muaj ob hom kev sib txawv ntawm cov enzyme no (qhov sib txawv ntawm cov amino acid sib txawv), ib qho nyob hauv mitochondrion thiab ib qho hauv cytosol (soluble cytoplasm).
Kev hloov pauv ntawm alanine tshwm sim nyob qhov twg?
Lub siab siv cov alanine thiab hloov nws rov qab rau hauv pyruvate los ntawm kev hloov pauv. Cov pyruvate tuaj yeem siv rau gluconeogenesis thiabcov amino pawg nws thiaj li tshwm sim li urea. Kev thauj mus los no yog hu ua lub voj voog alanine.
Pom zoo:
Dab tsi yog qhov hloov pauv thiab hloov pauv hloov pauv?
Point mutations hloov ib leeg nucleotide. Frameshift kev hloov pauv yog ntxiv lossis tshem tawm ntawm nucleotides uas ua rau muaj kev hloov pauv hauv kev nyeem ntawv. frameshift thiab point mutation yog dab tsi? Ib qho kev hloov pauv cuam tshuam rau ib khub hauv paus.
Qhov kev hloov pauv no puas yuav ua rau muaj kev hloov pauv hloov pauv?
Yog li, yog tias muaj kev hloov pauv, piv txwv li, kev ntxig lossis tshem tawm ntawm nucleotide, tshwm sim, qhov no tuaj yeem ua rau kev hloov pauv ntawm kev nyeem ntawv. Nws hloov tag nrho cov amino acid ib ntus. Cov kev hloov pauv no yog hu ua frameshift mutation (tseem hu ua kev nyeem ntawv hloov pauv, nyeem ntawv hloov pauv, lossis framing yuam kev).
Qhov twg yog qhov kev hloov pauv hloov pauv hloov pauv?
Semiconservative replication piav qhia txog cov txheej txheem ntawm DNA replication nyob rau hauv tag nrho cov paub hlwb. DNA replication tshwm sim ntawm ntau lub hauv paus pib ntawm kev rov ua dua raws DNA qauv strand. Raws li DNA ob chav helix yog unwound by helicase, replication tshwm sim nyias ntawm txhua tus qauv strand nyob rau hauv antiparallel cov lus qhia.
Qhov kev hloov pauv twg yog xav tias yuav cuam tshuam los ntawm kev hloov pauv hloov pauv?
Dependent Variable Qhov sib txawv uas nyob ntawm lwm yam uas ntsuas. Cov kev hloov pauv no yuav tsum tau hloov pauv raws li qhov kev sim ua haujlwm ntawm tus kheej hloov pauv lossis hloov pauv. Nws yog cov nyhuv presumed. Qhov kev tshawb fawb hloov pauv twg yog qhov tshwm sim?
Los ntawm kev hloov pauv hloov pauv hloov pauv?
Kev hloov pauv hloov pauv hloov pauv (TMA) yog qhov isothermal (tsis hloov pauv nucleic acid kub), ib leeg-tube nucleic acid amplification system siv ob lub enzymes, RNA polymerase thiab thim rov qab kev sau ntawv. … Cov txheej txheem no tuaj yeem siv los tsom rau RNA thiab DNA.
