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  5. 以生物資訊探勘技術探討蛋白質結構之功能性演化: 以NDM beta lactamase 為例
 
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以生物資訊探勘技術探討蛋白質結構之功能性演化: 以NDM beta lactamase 為例

Other Title
Exploring the Structure-Function Correlation in Protein Evolution By Using Bioinformatics Data Mining: A Study of NDM beta lactamase
Type
thesis
Date Issued
2023-07-11
Author(s)
楊牧心
Advisor
張語曲 ; 吳瑞裕
Subjects
系所名稱:醫學科學研究所碩士班
Description
學位別:碩士
語文別:中文
口試委員:郭泰志 GUO,TAI-CHIH;王皓青 WANG, HAO-CHING;黃姿雯 HUANG, TZU-WEN
授權範圍:網際網路,開放日期為2023-07-20
Abstract
隨著分子生物學的快速進展與基因和蛋白質快速突變,取得基因的定序與胺基酸的序列對於現今的科技而言已是相當方便;然而,目前蛋白質的立體結構分析,卻仍是一大難關。透過計算生物學(Computational Biology)模式(如: SWISS-MODEL、ΑlphaFold2),由胺基酸序列推測該蛋白質的結構,可大幅簡化結構的解析流程。本研究以New Delhi metallo-β-Lactamase (NDM)為標的,希望透過更精細的方式,探討以胺基酸序列建立之模擬結構,可否成為精準的立體結構模型,建立整合結構與功能之資料庫,探討序列變異點位對蛋白質結構的影響。本研究透過標準化結構分析流程,建立一套完整的結構分析模式。研究中有三大突破,包含為分析流程設計、臨床變異型/人工突變型的綜合模擬預測與現有結晶結構的價值最大化。第一,進行蛋白質結構標準定位視覺化,並輔以突變位外各位點之胺基酸鍵角差異進行量化分析。在動態反應或環境變因的狀態下,評估細部結構變化。第二,由NDM之臨床與人工突變型序列,建立整合的結構模型資料庫,並將對應結晶結構的結果,分析不同來源的點突變之間的交互影響、結構對功能影響以及NDM催化中心變化。第三,收集以及統整目前結構資料庫中與標的相關的結晶結構,針對常見不同反應條件進行討論,包含臨床突變位結構、蛋白質與受質作用機制和抑制劑作用位置進行分析。希望透過這套系統流程優化,對於快速且新興的蛋白質突變,進行快速精準之模擬預測。
URI
https://handle.ncl.edu.tw/11296/j32rkm
https://203.71.86.71/handle/123456789/10264

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