Dab tsi yog qhov chaw ua haujlwm ntawm enzyme?

2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17

Hauv biology, lub qhov chaw nquag yog thaj tsam ntawm ib enzyme qhov twg substrate molecules khi thiab raug tshuaj lom neeg cov tshuaj tiv thaiv. Cov qhov chaw nquag muaj cov residues uas tsim ib ntus daim ntawv cog lus nrog lub substrate (binding qhov chaw ) thiab residues uas catalyze cov tshuaj tiv thaiv ntawm cov substrate (catalytic qhov chaw ).

Hauv qhov no, qhov chaw ua haujlwm ntawm cov enzyme teb yog dab tsi?

1 Teb . Cov qhov chaw nquag yog thaj tsam ntawm lub enzyme qhov twg substrate molecules khi thiab undergo tshuaj tiv thaiv.

Tsis tas li ntawd, qhov chaw ua haujlwm hauv biology yog dab tsi? Cov qhov chaw nquag hais txog thaj tsam tshwj xeeb ntawm ib qho enzyme qhov twg ib lub substrate khi thiab catalysis tshwm sim los yog qhov twg cov tshuaj tiv thaiv tshwm sim. Nws yog cov txheej txheem ntawm cov protein uas txiav txim siab seb cov protein puas ua haujlwm thaum muaj kev cuam tshuam los ntawm ib qho enzyme.

Ib yam li ntawd, puas qhov chaw ua haujlwm ntawm ib qho enzyme hloov cov duab?

Active Qhov chaw thiab tej yam kev mob ib puag ncig Txawm li cas los xij, nce lossis txo qhov kub ntawm sab nraud ntawm qhov kev pom zoo ua tau cuam tshuam chemical bonds nyob rau hauv lub enzyme thiab hloov nws puab . Yog tias enzyme hloov cov duab , cov qhov chaw nquag tej zaum yuav tsis khi rau qhov tsim nyog substrate thiab tus nqi ntawm cov tshuaj tiv thaiv yuav txo.

Dab tsi yog qhov chaw allosteric ntawm ib qho enzyme?

Qee yam khoom khi rau enzyme ntawm a qhov chaw lwm yam tshaj li active qhov chaw . Qhov no lwm yam qhov chaw yog hu ua allosteric site . Cov allosteric site tso cai rau cov molecules los qhib lossis inhibit, lossis tua, enzyme kev ua si. Cov molecules khi lub allosteric site thiab hloov qhov kev lees paub, lossis cov duab, ntawm qhov enzyme.