Cov txheej txheem protein ntau npaum li cas suav nrog alpha helices thiab beta pleated nplooj?

2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36

Thawj proteins qauv tsuas yog qhov kev txiav txim ntawm cov amino acids khi ua ke los ntawm peptide bonds los ua a polypeptide saw. Secondary qauv hais txog cov alpha helices thiab beta pleated nplooj tsim los ntawm hydrogen bonding nyob rau hauv feem ntawm cov polypeptide.

Hauv qhov no, theem ntawm cov qauv protein cuam tshuam nrog alpha helix thiab beta pleated ntawv?

Secondary qauv Feem ntau ntawm cov txheej txheem thib ob yog α helix thiab β pleated ntawv. Ob lub qauv yog tuav hauv cov duab los ntawm hydrogen bonds, uas tsim ntawm carbonyl O ntawm ib amino acid thiab cov amino H ntawm lwm tus.

Ib yam li ntawd, alpha helix txawv ntawm daim ntawv beta pleated li cas? Cov alpha helix yog cov saw hlau polypeptide uas yog tus pas nrig thiab coiled nyob rau hauv lub caij nplooj ntoos hlav zoo li qauv, tuav los ntawm hydrogen bonds. Beta pleated nplooj ntawv ua los ntawm beta strands txuas tom qab los ntawm ob los yog ntau dua hydrogen bonds ua ib tug qaum. Txhua beta strand, los yog saw, yog ua los ntawm 3 mus rau 10 amino acid residues.

Nyob rau hauv txoj kev no, hom kev sib cuam tshuam dab tsi stabilizes α helix thiab β pleated daim ntawv qauv ntawm cov protein?

peptide daim ntawv cog lus. polar bonds.

Dab tsi yog alpha helices thiab beta pleated ntawv?

Secondary Structure ntawm Protein Ob tug fibrous qauv lub alpha helix , thiab cov beta pleated ntawv , uas yog structural Cheebtsam ntawm lub cell. Cov alpha helix yog tsim thaum polypeptide chains twist mus rau hauv ib tug kauv. Cov beta pleated ntawv yog polypeptide chains khiav ntawm ib sab.