摘要
通过菌落原位分子杂交,从多发性骨髓瘤细胞株ARH-77cDNA文库获得L1逆转录酶基因5'端序列.随后使用3'RACE技术,获得L1逆转录酶基因3'端序列及poly(A)尾.生物信息学分析表明:该L1逆转录酶DNA序列有一长552bp开放性阅读框,编码184个氨基酸残基的多肽链,其相对分子质量约为21kDa.同时将编码L1逆转录酶保守区的开放性阅读框DNA片段与原核表达载体pQE30连接,得到重组原核表达质粒,利用大肠杆菌表达并获得L1逆转录酶融合蛋白.
The full length sequence with poly(A) tail of L1 reverse transcript as e gene in human multiple myeloma cell line ARH 77 cDNA library was obtained by in situ hybridization and 3′RACE technique.Bioinformatic analysis shows that L1 reverse transcriptase gene contains an open reading frame with 552 base pairs a nd encodes a polypeptide with 184 amino acids,its relative molecular weight is 2 1 kDa.The Recombinant prokaryotic expression plasmid pQE30 L1/ORF was construct ed and transformed into E.coli JM109.L1 fusion protein was expressed under the i nduction of IPTG.
出处
《生命科学研究》
CAS
CSCD
2005年第2期118-123,共6页
Life Science Research
基金
国家自然科学基金资助项目(39880021)
国家自然科学基金资助项目(30270570)
国家自然科学基金资助项目(30300406)