![Dab tsi yog qhov chaw sib khi antigen? Dab tsi yog qhov chaw sib khi antigen?](https://i.answers-medical.com/preview/medical-health/13913737-what-is-the-antigen-binding-site-j.webp)
Video: Dab tsi yog qhov chaw sib khi antigen?
![Video: Dab tsi yog qhov chaw sib khi antigen? Video: Dab tsi yog qhov chaw sib khi antigen?](https://i.ytimg.com/vi/1Wsm7ny-aeo/hqdefault.jpg)
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Cov antigen - khi fragment (Fab) yog thaj av ntawm cov tshuaj tiv thaiv kab mob uas khi rau antigens . Tus sau sib txawv muaj cov paratope (the antigen - qhov chaw khi ), suav nrog txheej txheej kev ua kom tiav-txiav txim siab thaj tsam, ntawm qhov kawg ntawm qhov kawg ntawm monomer. Txhua caj npab ntawm Y li no khi epitope ntawm qhov antigen.
Ntxiv mus, dab tsi yog qhov chaw tiv thaiv antigen ntawm cov tshuaj tiv thaiv?
Paratope yog ib feem ntawm ib qho tshuaj tiv thaiv kab mob uas lees paub ib antigen , cov antigen - khi qhov chaw ntawm cov tshuaj tiv thaiv kab mob . Nws yog thaj av me me (15-22 amino acids) ntawm antibody cov Fv cheeb tsam thiab muaj ib feem ntawm antibody cov hnyav thiab lub teeb saw. Ib feem ntawm qhov antigen qhov uas paratope khi hu ua epitope.
Ib yam nkaus, yuav ua li cas thaum antigen khi rau cov tshuaj tiv thaiv kab mob? Thaum qee qhov tshuaj tiv thaiv ua ke nrog antigens , lawv qhib qhov cascade ntawm cuaj cov protein, hu ua kev sib ntxiv, uas tau nthuav dav hauv daim ntawv tsis ua haujlwm hauv cov ntshav. Ua tiav daim ntawv koom tes nrog tshuaj tiv thaiv , ib zaug lawv tau reacted nrog antigen , los pab rhuav tshem cov neeg txawv tebchaws txawv txav thiab tshem lawv tawm ntawm lub cev.
Cov lus nug tseem yog, vim li cas thiaj muaj ob qhov chaw tiv thaiv antigen?
Vim ib antigen tuaj yeem muaj ntau qhov sib txawv ntawm epitopes, tus naj npawb ntawm cov tshuaj tiv thaiv tuaj yeem ua tau khi mus rau cov protein. Thaum twg ob lossis ntau dua cov chaw tiv thaiv antigen yog qhov zoo ib yam, cov tshuaj tiv thaiv kab mob tuaj yeem tsim kom muaj kev sib raug zoo nrog antigen tshaj yog tias tsuas yog ib qho ntawm cov tshuaj tiv thaiv kab mob qhov chaw yog khi.
Muaj pes tsawg qhov chaw khi ua antigens muaj?
Vim lawv ob leeg antigen - khi qhov chaw , lawv yog piav raws li bivalent Tsuav yog ib qho muaj antigen peb lossis ntau dua antigenic txiav txim siab, bivalent antibody molecules tau hla nws mus rau hauv lub lattice loj (Daim duab 24-19).
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