柱狀田頭菇凝集素的分離純化及其部分性質(zhì)
The Isolation-Purification and Some Characteristics of Agrocybe cylindracea Lectin
劉艷如 余萍 鄭怡
摘 要:經(jīng)硫酸銨分級(jí)沉淀、活性炭柱吸附、DEAE-Sepharose FF離子交換層析及Sephadex G-100分子篩層析,從柱狀田頭菇子實(shí)體浸出液中分離到在PAGE上顯示1條蛋白質(zhì)染色帶的凝集素ACL(Agrocybe cylindracea lectin).經(jīng)Sephadex G-100測(cè)得ACL分子量為67890,經(jīng)SDS-PAGE測(cè)定,其亞基分子量分別為34673、20000和13183.ACL的中性糖含量為5.87%,氨基酸中天冬氨酸含量最高,半胱氨酸含量最低.ACL能凝集多種動(dòng)物和人的A、B或O型紅細(xì)胞,對(duì)鼠紅細(xì)胞的血凝活性可被7種單糖和3種雙糖抑制.ACL是一種對(duì)熱較為穩(wěn)定的凝集素.
關(guān)鍵詞:柱狀田頭菇; 凝集素; 提純; 血球凝集活性; 理化特性
分類號(hào):S646.901 文獻(xiàn)標(biāo)識(shí)碼:A
文章編號(hào):1005-9873(2004)03-0017-07
基金項(xiàng)目:福建省教育廳資助項(xiàng)目"食用菌凝集素的研究及應(yīng)用"(JA02185)的部分內(nèi)容
作者簡(jiǎn)介:劉艷如(1964-),女,1986年畢業(yè)于華東師范大學(xué)化學(xué)系,理學(xué)學(xué)士,副教授,主要從事蛋白質(zhì)的分離、純化等研究,發(fā)表主筆論文9篇.
作者單位:劉艷如(福建師范大學(xué)生物工程學(xué)院)
余萍(福建師范大學(xué)化學(xué)與材料學(xué)院,福州,350007)
鄭怡(福建師范大學(xué)生物工程學(xué)院)
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