摘要
Transactivator (Tat) of bovine immunodeficiency virus (BIV) is a virus encoded regulatory protein, which activates gene expression directed by BIV long terminal repeat (LTR), and plays an important role in BIV replicative cycle. With methods of fusion protein expression and deletion mutation, a set of BIV Tat deletion mutants was constructed, and co transfected into FBL cells with BIV LTR. Using luciferase gene as a reporter, the function of BIV Tat mutants was detected and it showed that: 17/96 aa region of BIV Tat peptide contains full activity; auxiliary amino acids exist in N terminal 17/34 aa region; Cys rich region and basic region are essential to BIV Tat activity. Computer prediction of BIV Tat secondary structure was showed, and mechanism how it functions was analyzed.
Transactivator (Tat) of bovine immunodeficiency virus (BIV) is a virus encoded regulatory protein, which activates gene expression directed by BIV long terminal repeat (LTR), and plays an important role in BIV replicative cycle. With methods of fusion protein expression and deletion mutation, a set of BIV Tat deletion mutants was constructed, and co transfected into FBL cells with BIV LTR. Using luciferase gene as a reporter, the function of BIV Tat mutants was detected and it showed that: 17/96 aa region of BIV Tat peptide contains full activity; auxiliary amino acids exist in N terminal 17/34 aa region; Cys rich region and basic region are essential to BIV Tat activity. Computer prediction of BIV Tat secondary structure was showed, and mechanism how it functions was analyzed.
出处
《中国病毒学》
CAS
CSCD
2000年第1期88-91,共4页
Virologica Sinica
基金
国家自然科学基金!(396 70 0 32 )
美国NIH资助国际合作项目!(R0 3TW 0 0 493 0 1A1)
关键词
牛免疫缺陷病毒
反式激活因子
缺失突变
Bovine immunodeficiency virus (BIV)
Transactivator (Tat)
Deletion mutation
