![Puas yog lactase muaj quaternary qauv? Puas yog lactase muaj quaternary qauv?](https://i.answers-medical.com/preview/medical-health/14127745-does-lactase-have-quaternary-structure-j.webp)
Video: Puas yog lactase muaj quaternary qauv?
![Video: Puas yog lactase muaj quaternary qauv? Video: Puas yog lactase muaj quaternary qauv?](https://i.ytimg.com/vi/OwZGOjMRcXQ/hqdefault.jpg)
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
β-galactosidase ( lactase ) yog tetramer, hais tias nws muaj plaub subunits. Qhov no yog ib qho piv txwv ntawm cov enzyme uas suav nrog a quaternary qauv.
Hauv qhov no, tus qauv ntawm lactase yog dab tsi?
Neeg laus lactase muaj ib leeg nkaus xwb 160-kDa polypeptide saw uas nyob ib puag ncig txhawm rau txhuam daim tawv nqaij ntawm cov hnyuv epithelial. Nws yog taw qhia nrog N-terminus sab nraum lub cell thiab C-terminus hauv cytosol. LPH muaj ob qhov chaw catalytic glutamic acid.
Ib tug kuj yuav nug, muaj pes tsawg amino acids nyob rau hauv thawj qauv ntawm lactase? Cov Qauv ntawm Lactase Cov seem ntawm cov saw raug muab tshem tawm vim tias polypeptide tau hloov pauv mus rau nws daim ntawv loj hlob, lactase. Ntau cov saw hlau tau muab tso ua ke los tsim cov lactase, uas yog tsim los ntawm plaub ntawm tib lub subunits. Txhua subunit muaj 1023 amino acid residues rau tag nrho ntawm 4092 amino acid seem.
Hauv kev hwm rau qhov no, hom protein twg yog lactase?
Cov enzyme Lactase yog transmembrane protein ntau nyob rau hauv cov hnyuv epithelial hlwb, los yog enterocytes. Nws txoj haujlwm yog ua kom tawg lactose nyob rau hauv nws ob lub suab thaj sib xyaw: piam thaj thiab galactose. Cov suab thaj uas muaj nyob hauv no tuaj yeem siv hauv kev tsim khoom ATP thiab lwm yam txheej txheem ntawm tes.
Dab tsi yog qhov reactant rau lactase enzyme?
(a) lactose yog cov reactant thiab qabzib thiab galactose yog cov khoom lag luam.
Pom zoo:
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Hydrostatic underwater hnyav
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