一种半胱氨酸内肽酶（“捕蝇草蛋白酶”）存在于捕蝇草（维纳斯捕蝇器）的消化液中。
A cysteine endopeptidase ("dionain") is involved in the digestive fluid of Dionaea muscipula (Venus's fly-trap).
作者信息
Takahashi Kenji, Suzuki Takehiro, Nishii Wataru, Kubota Keiko, Shibata Chiaki, Isobe Toshiaki, Dohmae Naoshi
机构信息
School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo, Japan.
出版信息
Biosci Biotechnol Biochem. 2011;75(2):346-8. doi: 10.1271/bbb.100546. Epub 2011 Feb 7.
The carnivorous plant Dionaea muscipula (Venus's flytrap) secretes proteinases into the digestive fluid to digest prey proteins. In this study, we obtained evidence that the digestive fluid contains a cysteine endopeptidase, presumably belonging to the papain family, through inhibitor studies and partial amino acid sequencing of the major SDS-PAGE band protein. The name "dionain" is proposed for the enzyme.
食肉植物捕蝇草（维纳斯捕蝇陷阱）会向消化液中分泌蛋白酶以消化猎物蛋白质。在本研究中，通过抑制剂研究以及对主要SDS-PAGE条带蛋白进行部分氨基酸测序，我们获得了证据，证明消化液中含有一种半胱氨酸内肽酶，可能属于木瓜蛋白酶家族。我们提议将该酶命名为“捕蝇草蛋白酶”。
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