The 8 Alpha-Helices (A-H) of Myoglobin.
Puas myoglobin muaj alpha helices?
Myoglobin (thiab hemoglobin) yog qhov txawv ntawm qhov lawv muaj tsuas yog alpha helix theem nrab qauv(pom ntawm no ua helical loops hauv liab) txuas ua ke los ntawm stretches ntawm random coil.
Muaj pes tsawg alpha helices muaj?
Cov protein yog qee zaum thauj khoom los ntawm ib qho membrane-spanning helix, qee zaum los ntawm ib khub, thiab qee zaum los ntawm ib pob helix, feem ntau classical muaj xws li xya helices teem-thiab- nqes hauv ib lub nplhaib xws li rhodopsins (saib daim duab ntawm txoj cai) lossis rau G protein-coupled receptors (GPCRs).
Puas muaj pes tsawg alpha helices nyob rau hauv hemoglobin?
Hemoglobin txawv dua li lwm cov proteins vim tias nws tus kheej polypeptides, uas muaj plaub, hu ua globins es tsis yog cov protein subunits. Lub 7 alpha helices thiab luv luv uas tsis yog helical randomly coiled ntu.
Puas muaj pes tsawg alpha helices hauv cov protein?
Cov qauv ntawm cov protein no yog ib qho 8-amino- acid α helix ua raws li txoj cai "tig" muaj 3 amino acids ua raws li lwm α helix ntawm 9 amino kua qaub. Muaj peb txoj haujlwm nyob rau hauv helix-tig-helix motif uas tau txuag tau zoo.
