Yuav ua li cas yog ib qho enzyme active site tsim?

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 daim ntawv daim ntawv cog lus ib ntus nrog lub substrate (binding qhov chaw ) thiab residues uas catalyze cov tshuaj tiv thaiv ntawm cov substrate ( catalytic site ).

Ib yam li ntawd, tib neeg nug, puas qhov chaw ua haujlwm ntawm cov enzyme hloov pauv?

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 tau cuam tshuam chemical bonds nyob rau hauv lub enzyme thiab hloov nws duab . 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.

Qhov thib ob, vim li cas cov duab ntawm qhov chaw nquag ntawm cov enzyme tseem ceeb? Hauv lub enzyme molecule, zoo thiab tsis zoo them cov amino acids yuav nyiam. Qhov no contributes rau lub folding ntawm lub enzyme molec, nws duab , thiab cov cov duab ntawm qhov chaw nquag . Hloov cov pH yuav cuam tshuam cov nqi ntawm cov amino acid molecules. Amino acids uas nyiam ib leeg yuav tsis muaj lawm.

Raws li txoj cai, koj ua li cas txiav txim siab qhov chaw ua haujlwm ntawm enzyme?

Ib feem ntawm qhov enzyme qhov twg substrate khi yog hu ua qhov chaw nquag (vim qhov ntawd yog qhov uas qhov catalytic "action" tshwm sim). Ib lub substrate nkag mus rau hauv qhov chaw nquag ntawm enzyme.

Puas yog qhov chaw ua haujlwm ntawm enzyme hydrophobic?

a) Ib qhov chaw nquag feem ntau yog ib qho hollow lossis cleft ntawm qhov chaw ntawm ib qho enzyme . b) Ib qhov chaw nquag yog ib txwm hydrophilic nyob rau hauv qhov. d) Ib qhov chaw nquag muaj cov amino acids uas yog ib qho tseem ceeb rau cov txheej txheem khi thiab cov txheej txheem catalytic.