Video: Qhov twg koj yuav pom hydrogen bonds hauv cov proteins?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Nyob rau hauv lub thib ob qauv ntawm cov proteins , hydrogen bonds tsim ntawm cov pob txha oxygens thiab amide hydrogens. Thaum qhov sib nrug ntawm cov amino acid residues koom nrog a hydrogen daim ntawv cog lus tshwm sim tsis tu ncua ntawm txoj haujlwm kuv thiab kuv + 4, ib qho alpha helix yog tsim.
Tsis tas li ntawd, hydrogen bonds hauv cov protein yog dab tsi?
A hydrogen daim ntawv cog lus yog tsim los ntawm kev sib cuam tshuam ntawm a hydrogen atom uas yog covalently bonded rau ib tug electronegative atom (tus pub) nrog rau lwm electronegative atom (acceptor). Hydrogen bonding confers rigidity rau lub protein ntau qauv thiab tshwj xeeb rau kev sib cuam tshuam ntawm intermolecular.
Ib yam li ntawd, yuav ua li cas cov proteins tawg hydrogen bonds? Thaum tshav kub kub tuaj yeem siv los cuam tshuam hydrogen bonds thiab tsis-polar hydrophobic kev sib cuam tshuam. Qhov no tshwm sim vim thaum tshav kub kub ua rau lub zog kinetic thiab ua rau cov molecules vibrate sai heev thiab hnyav heev uas lub kinetic zog. daim ntawv cog lus raug cuam tshuam. Cov cov proteins hauv qe denature thiab coagulate thaum ua noj.
Raws li, qhov twg koj yuav pom hydrogen bonds hauv nucleic acids?
Yog li hauv nucleic acids hydrogen bonding tshwm sim ntawm adenosine thiab thymine bases thiab nruab nrab ntawm cytosine thiab guanine bases. Hauv cov carbohydrates, hydrogen bonding tshwm sim ntawm -OH pawg ntawm cov molecules.
Lub luag haujlwm ntawm hydrogen bonds hauv cov qauv ntawm cov protein yog dab tsi?
Cov hydrogen - daim ntawv cog lus kuj ua ib qho tseem ceeb heev luag hauj lwm hauv cov proteins ' qauv vim nws stabilizes theem nrab, tertiary thiab quaternary qauv ntawm cov protein uas tsim los ntawm alpha helix, beta nplooj ntawv, lem thiab loops. Cov hydrogen - daim ntawv cog lus txuas cov amino acides ntawm cov sib txawv polypeptide chains hauv proteins qauv.
Pom zoo:
Lub organelle twg ua haujlwm raws li qhov chaw xa ntawv ntawm lub xov tooj ntawm tes txheeb cov proteins thiab xa lawv mus rau lawv qhov chaw xav tau sab hauv lossis sab nraud ntawm tes?
Golgi Hais txog qhov no, dab tsi organelle yog lub luag haujlwm rau kev thauj mus los? endoplasmic reticulum (ER Qhov thib ob, cov proteins txav mus los ntawm lub cell li cas? Cov proteins txav mus los endomembrane system thiab raug xa tawm los ntawm lub ntsej muag trans ntawm Golgi apparatus nyob rau hauv thauj vesicles uas txav mus los cytoplasm thiab tom qab ntawd fuse nrog plasma membrane tso tawm protein ntau mus rau sab nraum lub cell .
Hauv cov molecules lom neeg twg koj tuaj yeem pom hydrogen bonds?
Hydrogen Bond Piv txwv Hydrogen bonding tshwm sim nto moo tshaj plaws ntawm cov dej molecules. Tib neeg DNA yog ib qho piv txwv nthuav ntawm hydrogen daim ntawv cog lus. Hydroflouric thiab formic acids muaj ib hom tshwj xeeb ntawm hydrogen daim ntawv cog lus hu ua symmetric hydrogen bond
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