Linus Pauling nrhiav tau dab tsi txog DNA?
Linus Pauling nrhiav tau dab tsi txog DNA?

Video: Linus Pauling nrhiav tau dab tsi txog DNA?

Video: Linus Pauling nrhiav tau dab tsi txog DNA?
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Hauv xyoo 1950, Linus Pauling los ua lub npe hu ua tus tsim ntawm molecular biology vim nws nrhiav pom ntawm lub kauv qauv ntawm cov proteins (Taton, 1964). Pauling tus Kev tshawb pom tau pab txhawb rau Watson thiab Crick qhov kev ua tiav ntawm DNA ob helix.

Ib yam li ntawd, koj tuaj yeem nug, Pauling pom dab tsi txog DNA?

Pauling qhov kev tshawb pom tau ua rau txoj hauv kev rau xyoo 1953 kev tshawb pom ntawm DNA tus qauv ob-helix los ntawm kev sib koom ua ke ntawm Francis Crick , Rosalind Franklin, James Watson thiab Maurice Wilkins. Pauling tsuas yog lawv cov neeg sib tw loj hauv kev sib tw, tab sis nws tsis raug ntseeg tias DNA yog triple-helix.

Qhov thib ob, Linus Pauling cuam tshuam nrog dab tsi? Nws cov lus piav qhia hais tias: Ib tus kws tshawb fawb muaj txiaj ntsig zoo heev, tus kws kho mob ua ke Linus Pauling (1901–1994) yeej xyoo 1954 Nobel nqi zog hauv Chemistry rau kev txiav txim qhov xwm txheej ntawm cov tshuaj sib txuas ntawm cov atoms rau hauv cov molecules.

Tsis tas li ntawd, hom qauv DNA twg Linus Pauling tau hais tsis raug?

Linus Pauling's peb npaug DNA helix qauv , 3D animation nrog cov lus piav qhia yooj yim. Qhov no yog Linus Pauling's ua tsis tau tejyam sim twv seb tus qauv ntawm DNA . Qhov teeb meem nrog nws triple helix qauv yog tias cov phosphates tsim lub helical core, nrog lub hauv paus taw qhia sab nraud.

Watson thiab Crick nrhiav tau dab tsi?

Watson thiab Crick ua haujlwm ua ke ntawm kev kawm txog cov qauv ntawm DNA (deoxyribonucleic acid), cov molecule uas muaj cov ntaub ntawv keeb kwm ntawm cov hlwb. Thaum lub Plaub Hlis 1953, lawv tau tshaj tawm cov xov xwm ntawm lawv qhov kev tshawb pom, cov qauv molecular ntawm DNA raws li tag nrho nws cov yam ntxwv paub - ob lub helix.

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