Activities associated with the presence of ribosome-inactivating proteins increase in senescent and stressed leaves

被引：85
作者：
Stirpe, F
Barbieri, L
Gorini, P
Valbonesi, P
Bolognesi, A
Polite, L
机构：
[1] Dipto. di Patologia Sperimentale, I-40126 Bologna
[2] Dipto. di Patologia Sperimentale, Università di Bologna
来源：
FEBS LETTERS | 1996年 / 382卷 / 03期
关键词：
ribosome-inactivating protein; polynucleotide:adenosine nucleosidase; leaf senescence; plant stress;
D O I：
10.1016/0014-5793(96)00188-3
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：
The ribosome-inactivating proteins (RIPs) from Hura crepitans and Phytolacca americana release adenine from herring sperm DNA. Leaf extracts from these plants show the same enzymatic activities as the RIPs. The translation inhibitory activity and the activity on DNA are both increased in the leaves of both plants during senescence or when subjected to heat or osmotic stress. It is proposed that a physiological role of RIPs could be to intervene in the death of plant cells.
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收藏
页码：309 / 312
页数：4
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