抗生素是其中一種應付細菌或微生物的手段,以Virginiamycin M2(VM2)這抗生素為例,它能夠與細菌的核糖體(Ribosome)結合,從而抑制細菌的生長及繁殖。961Please respect copyright.PENANARi6RMDa4wG
961Please respect copyright.PENANAKtreaWpERh
961Please respect copyright.PENANAygO37Eirvg
961Please respect copyright.PENANANdQTdMowZe
為應對抗生素的襲擊,細菌亦會發展出不同的機制作出制衡。同樣以VM2作為例子,細菌會生產一隻名為VatA酵素,能夠有效對VM2進行改造。961Please respect copyright.PENANALCIOvoMaux
961Please respect copyright.PENANAyNHQEBIpVe
被改造的VM2再也無法合併及阻礙Ribosome功能,細菌亦得以繼續無阻繁殖,展示出抗藥性。961Please respect copyright.PENANAVo8KaLTcjh
961Please respect copyright.PENANArlUA1NhFld
961Please respect copyright.PENANAxtlquH0yAL
(圖2)最近,有科學家應用名為Modular Synthesis的技術進行應對(Ref1)。961Please respect copyright.PENANAfVfKiJgEE1
簡單來說,Modular Synthesis就把化學物當作是砌LEGO一樣,能夠任意在短時間內改組化學物的各個部位。961Please respect copyright.PENANAmw2kD7zJYG
961Please respect copyright.PENANA5YiCBqwOVT
961Please respect copyright.PENANAQHGpRLNjzc
如圖中所示,化學物各顏色部位均能轉變成其相應顏色的組件。961Please respect copyright.PENANAls2I00cnva
961Please respect copyright.PENANA5SVarUebph
961Please respect copyright.PENANAANbfrGNtgZ
(圖3)經過一輪的驗證後,科學家發現細菌VatA酵素會在VM2某部位(C14)進行改造,但箇中過程將會與VM2另一個位置(C4)進行觸碰。961Please respect copyright.PENANApLFs57qh88
961Please respect copyright.PENANATi9PPfJymZ
961Please respect copyright.PENANAx9jFTKUsm0
基於這點,科學家特意在C4部位裝上一大串臃腫的化學結構,促使細菌VatA酵素無法與VM2進行互動的同時,亦能確保人為改造的VM2能夠使細菌的Ribosome功能受阻。961Please respect copyright.PENANApYFhexQZ1e
961Please respect copyright.PENANAwPi72iaBns
當然,並不難想像細菌會隨著時間的增長發展出另一種新穎的應對方法,到時候科學家會否重用Modular Synthesis技倆應對,或者發展出一道一勞永逸的方法,就有待我們細心等候了。961Please respect copyright.PENANAvXS3LqemOe
961Please respect copyright.PENANADMoFjIOoKL
暫時來說,這場道高一尺、魔高一丈的遊戲,應該還要持續好一段的時間。961Please respect copyright.PENANAgIpSPp6SR3
961Please respect copyright.PENANA4Ep700KTLY
如果想我快啲出文的話,請入去Penana網站科普專欄–薯不揀單俾一個like以及Bookmark,這對我非常之重要。961Please respect copyright.PENANAqodg7ZFjRZ
961Please respect copyright.PENANAXD5q9I4ohJ
Link: https://www.penana.com/story/66244/%E7%A7%91%E6%99%AE%E5%B0%88%E6%AC%84-%E8%96%AF%E4%B8%8D%E6%8F%80%E5%96%AE/toc961Please respect copyright.PENANAfAqjRn3ycw
961Please respect copyright.PENANAKy31MRvN5b
同時亦可以在Penana網站裡按「買一嚿/半嚿薯仔」,以課金的方式推動我繼續搜羅資料寫文,多謝。961Please respect copyright.PENANAiqa6T0QFgq
961Please respect copyright.PENANAsHFMrJYUJW
Link:961Please respect copyright.PENANAQ4g2lSKYHq
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio961Please respect copyright.PENANAT5jeHh7Ixu
961Please respect copyright.PENANAOV2pDEaC4S
961Please respect copyright.PENANAyqYKI1fLVH
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。961Please respect copyright.PENANAn8KVZ72oCi
961Please respect copyright.PENANAMY45D3vDoj
961Please respect copyright.PENANA0EGJQbOZ3x
Ref1:https://www.nature.com/articles/s41586-020-2761-3961Please respect copyright.PENANADt8OlC8tra
arrow_back
科普專欄–薯不揀單
more_vert
-
info_outline Info
-
toc Table of Contents
-
share Share
-
format_color_text Display Settings
-
exposure_plus_1 Recommend
-
Sponsor
-
report_problem Report
-
account_circle Login
Search stories, writers or societies
Continue ReadingClear All
What Others Are ReadingRefresh
X
Never miss what's happening on Penana!
科普專欄–薯不揀單
Author:
薯仔聞茱莉
ISSUE #59
深入淺出–抗生素為人類與細菌的戰場
LIKES 1
READS 957
BOOKMARKS 151
campaign
Request update 0
Sponsor
Login with Facebook
or Sign up/Login to comment or bookmark! Click to load the next chapter
X
After each update request, the author will receive a notification!
smartphone100
→ Request update
X
Sponsor again
Click to login
Login first to show your name as a sponsor.
Thank you for supporting the story! :)
Please Login first.
×
Write down what you like about the story
×
Reading Theme:
Font Size:
Line Spacing:
Paragraph Spacing:
Load the next issue automatically
Reset to default
×
People Who Like This
x
Before You Publish
Please ensure your story does not contain illegal, hateful, inciting, or violence-promoting content, or any infringing, plagiarized, or spam material, and that it complies with Penana’s Terms of Use.
Penana reserves the right to remove any content that violates these rules or causes legal or community risk, and to suspend or terminate related accounts.

