Video: Dab tsi yog qhov txwv enzymes siv rau hauv qhov xwm txheej?
2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
Kev txwv enzyme, tseem hu ua txwv endonuclease, ib qho protein ua los ntawm kab mob taj qob DNA ntawm qhov chaw tshwj xeeb raws cov molecule. Hauv cov kab mob ntawm tes , txwv enzymes cleave txawv teb chaws DNA , yog li tshem tawm cov kab mob.
Yog li ntawd, dab tsi yog lub luag haujlwm ntawm kev txwv enzymes hauv cov xwm txheej?
A txwv enzyme yog cov protein uas paub txog qhov tshwj xeeb, luv luv nucleotide ib ntus thiab txiav DNA tsuas yog ntawm qhov chaw tshwj xeeb, uas yog hu ua txwv qhov chaw lossis lub hom phiaj ua ntu zus. Hauv cov kab mob muaj sia, txwv kev ua haujlwm ntawm cov enzymes los tiv thaiv lub cell tiv thaiv kev kis tus kab mob bacteriophages.
Ib yam li ntawd, kev txwv enzymes npe li cas? Kev txwv enzymes muaj npe raws li cov kab mob uas lawv tau tshawb pom. Piv txwv li, lub enzyme Hind III raug cais tawm ntawm Haemophilus influenzae, lim Rd. Thawj peb tsab ntawv ntawm lub npe yog italicized vim lawv abbreviate lub genus thiab hom npe ntawm lub cev.
Ib yam li ntawd ib tug yuav nug, qhov twg yog qhov txwv enzymes pom nyob rau hauv qhov?
Txhawm rau txiav DNA, tag nrho txwv enzymes ua ob qhov kev txiav, ib zaug los ntawm txhua lub qab zib-phosphate qaum (piv txwv li txhua txoj hlua) ntawm DNA ob lub helix. Cov no cov enzymes yog pom nyob rau hauv cov kab mob thiab archaea thiab muab ib tug tiv thaiv mechanism tiv thaiv invading kab mob.
Lub evolutionary keeb kwm ntawm kev txwv enzymes yog dab tsi thiab lawv lub hom phiaj yog dab tsi?
Kev txwv endonucleases (REases) tiv thaiv cov kab mob los ntawm invading txawv teb chaws DNAs thiab yog endowed nrog exquisite sequence specifications. REases muaj keeb kwm los ntawm cov poj koob yawm txwv cov proteins thiab evolved tshiab sequence specifications los ntawm genetic recombination, gene duplication, replication slippage, thiab transpositional xwm txheej.
Pom zoo:
ICS thaj chaw ua haujlwm twg teeb tsa cov phiaj xwm phiaj xwm phiaj xwm thiab ua ntej thiab muaj lub luag haujlwm tag nrho rau qhov xwm txheej?
Cov lus txib xwm txheej yog lub luag haujlwm rau kev teeb tsa lub hom phiaj xwm txheej, cov tswv yim thiab qhov tseem ceeb. Nws kuj muaj lub luag haujlwm tag nrho rau qhov xwm txheej
Dab tsi yog cov ntsiab lus tseem ceeb ntawm qhov phiaj xwm phiaj xwm xwm txheej?
Lub Hom Phiaj Xwm Txheej Xwm Txheej yog dab tsi? Cov hom phiaj xwm txheej tshwm sim (qhov twg cov lus teb xav tau thaum kawg ntawm cov lus teb) Lub sijhawm ua haujlwm lub hom phiaj (cov cheeb tsam loj uas yuav tsum tau hais hauv lub sijhawm ua haujlwm tau teev tseg kom ua tiav cov hom phiaj lossis cov hom phiaj tswj hwm) Cov tswv yim teb (qhov tseem ceeb thiab txoj hauv kev kom ua tiav hom phiaj)
Dab tsi yog qhov txawv ntawm qhov tsis muaj xwm txheej thiab cov xwm txheej sentinel?
Cov xwm txheej Sentinel tau txhais tias yog 'qhov tshwm sim tsis tau xav txog uas cuam tshuam txog kev tuag lossis kev puas tsuaj loj ntawm lub cev lossis kev puas siab puas ntsws, lossis kev pheej hmoo ntawm qhov ntawd.' Lub NQF's Never Events kuj tseem suav tias yog cov xwm txheej xa mus los ntawm Pawg Neeg Sib Koom Tes. Lub Koom Haum Koom Tes ua haujlwm tau ua tiav ntawm qhov kev tshuaj xyuas hauv paus tom qab kev tshwm sim sentinel
Tus thawj tswj hwm qhov xwm txheej ua lub luag haujlwm dab tsi hauv kev tswj hwm xwm txheej ceev?
Cov khoom siv tsis raug tuaj yeem raug sib tw thiab tshem tawm. Tus thawj tswj hwm qhov xwm txheej yog tus neeg ua haujlwm rau txhua yam ntawm kev teb thaum muaj xwm txheej ceev; suav nrog kev tsim cov hom phiaj xwm txheej ceev, tswj txhua qhov xwm txheej ua haujlwm, kev siv cov peev txheej nrog rau lub luag haujlwm rau txhua tus neeg koom nrog
Dab tsi yog qhov xwm txheej thiab qhov xwm txheej uas koj yuav tsum tau tshaj tawm rau FAA?
Cov lus teb luv luv yog tias "kev sib tsoo" thiab "qhov xwm txheej hnyav" yuav tsum raug qhia rau NTSB, tab sis qhov xwm txheej tsis loj tsis tas yuav tsum tau tshaj tawm, raws li 49 CFR 830.2 thiab 830.5. Tsis muaj xwm txheej lossis qhov xwm txheej loj raug tshaj tawm rau FAA tshwj tsis yog FAA thov cov ntaub ntawv raws li ib feem ntawm kev tshawb nrhiav