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. 1996 Nov;62(11):4256–4259. doi: 10.1128/aem.62.11.4256-4259.1996

Cloning, sequencing, and expression of a Thermomonospora fusca protease gene in Streptomyces lividans.

G Lao 1, D B Wilson 1
PMCID: PMC168250  PMID: 8900021

Abstract

The major Thermomonospora fusca YX extracellular protease gene (tfpA) was cloned into Escherichia coli and Streptomyces lividans and was sequenced. The open reading frame encoded 375 residues, including a 31-residue potential signal sequence, an N-terminal prosequence containing 150 residues, and the 194-residue mature protease that belongs to the chymotrypsin family. The protease was secreted by S. lividans, but evidence suggested that it was bound to an extracellular protease inhibitor. An inhibitor-deficient mutant was selected to produce protease for purification.

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Selected References

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