草菇ras啟動子區(qū)域的克隆及其序列分析
Cloning and Sequence Analysis of ras Promoter Region from Volvariella volvacea
劉世強 楊麗卿 郭麗瓊 林俊芳
摘 要:根據(jù)Kajiwara S[1]等報道的ras啟動子的序列設計并合成一對特異引物,以草菇菌絲的總DNA為模板,通過PCR擴增,獲得一條長約0.75kb片段.DNA序列測定結果表明,該片段長度為751bp.采用Blast軟件和Promoter predictions軟件進行啟動子序列結構分析,結果表明,該片段中243~293 bp和539~589 bp兩區(qū)域為ras啟動子的基礎啟動子區(qū).在283bp和579bp處有兩個轉錄起始位點,在244~247bp和292~295bp之間有2個TATA box,在36~39bp、377~380bp、434~437bp和716~719bp之間有4個CAAT box.此外,該片段中還含有9個G box、12個Ⅰ box、2個P box以及3個重要順式作用元件:ABRE元件、WUN-motif(基元)和HSE元件.
關鍵詞:草菇; ras啟動子; PCR擴增; 序列分析
分類號:S646.130.6 文獻標識碼:A
文章編號:1005-9873(2004)01-0001-06
基金項目:國家自然科學基金資助項目(30060054和30371000)、廣東省自然科學基金資助項目(032239)和華南農(nóng)業(yè)大學校長基金項目(5100-k03003)的部分研究內(nèi)容
作者簡介:劉世強(1978-),男,華南熱帶農(nóng)業(yè)大學農(nóng)學院在讀碩士研究生,主要從事食用菌的基因工程研究與開發(fā).林俊芳,本文通訊作者
作者單位:劉世強(中國熱帶農(nóng)業(yè)科學院熱帶作物生物技術國家重點實驗室,???571701)
楊麗卿(中國熱帶農(nóng)業(yè)科學院熱帶作物生物技術國家重點實驗室,海口,571701)
郭麗瓊(中國熱帶農(nóng)業(yè)科學院熱帶作物生物技術國家重點實驗室,???571701;華南農(nóng)業(yè)大學食品學院生物工程系,廣州,510640)
林俊芳(中國熱帶農(nóng)業(yè)科學院熱帶作物生物技術國家重點實驗室,???571701;華南農(nóng)業(yè)大學食品學院生物工程系,廣州,510640)
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