Send to

Choose Destination
Insect Biochem Mol Biol. 2000 Jul;30(7):529-40.

Isolation of juvenile hormone esterase and its partial cDNA clone from the beetle, Tenebrio molitor.

Author information

Department of Entomology, One Shields Avenue, University of California, Davis, CA 95616, USA.


Juvenile hormone esterase (JHE) plays an essential role in insect development. It is partially responsible for the clearance of juvenile hormone (JH) which regulates various aspects of insect development and reproduction. Because of its role in regulating JH titer, this enzyme has been targeted for development of biologically-based insecticides. JHE was partially purified from the beetle, Tenebrio molitor, using a transition state analog as the affinity ligand. Two forms of JHE were characterized by activity analysis, isoelectric focusing, two-dimensional SDS-PAGE and N-terminal sequence analysis. The esterase is associated with two proteins of sizes 71 and 150 kDa, both of which are active on JH III. A partial cDNA clone for the enzyme was isolated based on the sequence of N-terminal and internal peptides. Its sequence indicates that JHE from T. molitor and Heliothis virescens may have a common origin.

[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Elsevier Science
Loading ...
Support Center