Ribonuclease, deoxyribonuclease, and antiviral activity of Escherichia coli-expressed Bougainvillea xbuttiana antiviral protein 1

被引：22
作者：
Choudhary, N. L. [1 ]
Yadav, O. P. [1 ]
Lodha, M. L. [1 ,2 ]
机构：
[1] Indian Agr Res Inst, Div Biochem, New Delhi 110012, India
[2] Indian Agr Res Inst, Div Genet, New Delhi 110012, India
来源：
BIOCHEMISTRY-MOSCOW | 2008年 / 73卷 / 03期
关键词：
Bougainvillea xbuttiana; antiviral protein; BBAP1; RNase activity; DNase activity; antiviral activity;
D O I：
10.1134/S000629790803005X
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
A full-length cDNA encoding ribosome-inactivating/antiviral protein from the leaves of Bougainvillea xbuttiana was recently isolated. The coding region of cDNA was cloned and expressed in Escherichia coli, and the protein product was designated as BBAP1 (Bougainvillea xbuttiana antiviral protein 1). BBAP1 showed ribonuclease activity against Torula yeast RNA. It also exhibited depurination activity against supercoiled pBlueScript SK+ plasmid DNA in a concentration dependent manner, and was found to convert nicked circular DNA into linear form only at higher concentration. On bioassay, BBAP1 exhibited antiviral activity against sunnhemp rosette virus infecting Cyamopsis tetragonoloba leaves in which 95% inhibition of local lesion formation was observed.
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页码：273 / 277
页数：5
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