Kev faib tawm ntawm α helices, β strands, thiab tig raws cov saw hlau feem ntau hu ua nws cov qauv theem nrab.
Puas yog alpha helix tus qauv thib ob?
Lub α-helix yog ntau lub ntsiab ntawm cov qauv protein thib ob, tsim thaum cov amino acids "cua" los tsim ib sab tes xis helix qhov twg sab-chains taw qhia los ntawm lub hauv paus kauj (Fig. 3.1A, B).
Dab tsi yog alpha helix hauv cov qauv thib ob ntawm cov protein?
The alpha helix (α-helix) yog feem ntau motif nyob rau hauv cov qauv thib ob ntawm cov proteins thiab yog txoj cai tes-helix conformation nyob rau hauv uas txhua lub caj qaum N-H pawg hydrogen daim ntawv cog lus rau qaum C=O. pawg ntawm cov amino acid nyob rau plaub seem ua ntej raws li cov protein ntau.
Puas yog alpha helix ib tug tertiary qauv ntawm cov protein?
Protein Structure
Piv txwv li, cov α-helices tej zaum yuav taw qhia rau ib leeg los yog ntawm lub kaum sab xis. Yog li cov qauv tertiary hais txog qhov folding ntawm qhov sib txawv ntawmhelices, nplooj ntawv, tig, thiab cov seem ntawm cov protein rau hauv nws cov qauv peb-dimensional.
Puas yog alpha helix quaternary qauv?
Cov α-helix thiab β-pleated cov ntawv qauv muaj nyob hauv ntau cov globular thiab fibrous proteins. … Hauv qhov xwm txheej, qee cov proteins yog tsim los ntawm ntau lub polypeptides, tseem hu ua subunits, thiab kev sib cuam tshuam ntawm cov subunits no ua cov qauv quaternary.
