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Original Articles

Thr/Ser-rich Domain of Aspergillus Glucoamylase Is Essential for Secretion

, , , , &
Pages 961-963 | Received 27 Nov 2003, Accepted 16 Jan 2004, Published online: 22 May 2014
 

Abstract

The recombinant Aspergillus awamori strain carrying the mutant glucoamylase-encoding gene in which the entire Thr/Ser-rich Gp-I domain was deleted abolished secretion of mutant glucoamylase. The transcription of the Bip-encoding bipA was low in the wild type (wt) strain, but elevated in the recombinant strain under the condition of glaA expression. The results indicate that the Gp-I domain is vital for glucoamylase secretion.

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