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Comparative Study
. 2000 Sep-Oct;47(5):511-4.
doi: 10.1111/j.1550-7408.2000.tb00083.x.

Responses of Entamoeba invadens to heat shock and encystation are related

J Field  1 , K Van Dellen, S K Ghosh, J Samuelson
Affiliations
Comparative Study

Responses of Entamoeba invadens to heat shock and encystation are related

J Field et al. J Eukaryot Microbiol. 2000 Sep-Oct.

Abstract

An Entamoeba invadens gene encoding a homologue of BiP/GRP78, a 70-kDa heat shock protein or chaperonin was cloned. The predicted E. invadens BiP contained an ATP-binding site, a substrate-recognition domain, and a carboxy-terminal KDEL-peptide. Messenger RNAs of E. invadens for BiP, for a 70-kDa heat shock cognate, for a cyst wall glycoprotein (Jacob), and for chitinase were all induced by heat shock and by encystation medium. The presence of Jacob in heat-shocked amebae was confirmed by confocal microscopy and suggests that heat shock and encystation responses in E. invadens are related.

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