1R5A

Glutathione S-transferase

1R5A の概要

• エントリーDOI: 10.2210/pdb1r5a/pdb
• 関連するPDBエントリー: 1V2A 1jlv 1jlw
• 分子名称: glutathione transferase, COPPER (II) ION, GLUTATHIONE SULFONIC ACID, ... (4 entities in total)
• 機能のキーワード: glutathione s-transferase, gst, glutathione, gsh, mosquito, detoxification, xenobiotics, transferase
• 由来する生物種: Anopheles cracens
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 25609.93

構造登録者

Oakley, A.J. (登録日: 2003-10-09, 公開日: 2003-10-28, 最終更新日: 2023-10-25)

主引用文献

Udomsinprasert, R.,Pongjaroenkit, S.,Wongsantichon, J.,Oakley, A.J.,Prapanthadara, L.A.,Wilce, M.C.,Ketterman, A.J.
Identification, characterization and structure of a new Delta class glutathione transferase isoenzyme.
Biochem.J., 388:763-771, 2005

PubMed Abstract: The insect GST (glutathione transferase) supergene family encodes a varied group of proteins belonging to at least six individual classes. Interest in insect GSTs has focused on their role in conferring insecticide resistance. Previously from the mosquito malaria vector Anopheles dirus, two genes encoding five Delta class GSTs have been characterized for structural as well as enzyme activities. We have obtained a new Delta class GST gene and isoenzyme from A. dirus, which we name adGSTD5-5. The adGSTD5-5 isoenzyme was identified and was only detectably expressed in A. dirus adult females. A putative promoter analysis suggests that this GST has an involvement in oogenesis. The enzyme displayed little activity for classical GST substrates, although it possessed the greatest activity for DDT [1,1,1-trichloro-2,2-bis-(p-chlorophenyl)ethane] observed for Delta GSTs. However, GST activity was inhibited or enhanced in the presence of various fatty acids, suggesting that the enzyme may be modulated by fatty acids. We obtained a crystal structure for adGSTD5-5 and compared it with other Delta GSTs, which showed that adGSTD5-5 possesses an elongated and more polar active-site topology.

PubMed: 15717864
DOI: 10.1042/BJ20042015

実験手法

X-RAY DIFFRACTION (2.5 Å)