Ib tug tsawg ntawm cov noob nyob rau hauv tej zaum tag nrho cov kab mob vam khom rau "recoding" rau kev txhais ntawm lawv mRNAs. Hauv cov xwm txheej no, cov kev cai rau kev txiav txim siab yog hloov pauv ib ntus los ntawm kev ua ntawm cov cim tshwj xeeb ua raumRNA sequences. … Ribosomes tuaj yeem txhais hla coding qhov khoob hauv mRNA.
Dab tsi yog kev txiav txim siab thiab rov sau cov lus txhais?
yog tias kev txiav txim siab yog ib qho piv txwv ntawm kev txhais ib yam dab tsi rau hauv daim ntawv tsim nyog duarau kev ua tom ntej thaum recoding yog qhov ua lossis tshwm sim ntawm coding dua lossis txawv.
Dab tsi yog qhov txawv ntawm kev sau thiab txiav txim siab?
Decoding: Cov txheej txheem ntawm kev siv cov ntawv sau suab kom paub txog cov lus. … Phonological Recoding: Kev txhais cov ntawv rau suab rau cov lus kom tau txais kev nkag mus rau lo lus. Lo lus tsis tu ncua: Ib lo lus uas txhua tus tsiaj ntawv sawv cev rau lawv lub suab nrov tshaj plaws.
Dab tsi yog qhov kev hloov pauv hauv kev txhais lus?
Cells tau hloov kho cov txheej txheem tswj xyuas kom ntseeg tau fidelity ntawm txhua theem txhais lus. Txawm li cas los xij, hauv cov xwm txheej tshwj xeeb, cov teeb liab encoded hauv mRNA reprogram lub ribosome nyeem cov lus nyob rau hauv lwm txoj kev, ib tug tshwm sim hu ua translational recoding.
Yuav ua li cas yog qhov chaw hauv noob caj noob ces?
A-site (A rau aminoacyl) ntawm ribosome yog ib qhov chaw khi rau them t-RNA molecules thaum lub sij hawm tsim cov protein. Ib ntawm peb qhov chaw sib txuas,A-site yog thawj qhov chaw uas t-RNA khi thaum lub sij hawm tsim cov protein synthesis, lwm qhov chaw yog P-site (peptidyl) thiab E-site (tawm).
