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Title 

A novel proteinase inhibitor gene transiently induced by tobacco mosaic virus infection

Authors 

Kyung Soon ParkJong Joo CheongSang Jik LeeMi Chung SuhDo Il Choi

Publisher 

Elsevier

Issue Date 

2000

Citation 

Biochimica et Biophysica Acta (BBA) - Gene Structure and Expression, vol. 1492, no. 2, pp. 509-512

Keywords 

proteinase inhibitortobaccoplant defensetobacco mosaic viruswounding

Abstract 

A gene (NgPI) encoding a novel proteinase inhibitor (PI) has been isolated from tobacco leaves. Protein encoded by the gene consists of 241 amino acid residues having a predicted molecular mass of 26.7 kDa and a calculated pI of 8.7. A predicted N-terminal signal sequence followed by a vacuolar targeting signal and a peptide conserved in the Kunitz type PIs were identified. The deduced NgPI protein has sequence homology with aspartic and cysteine protease inhibitors. The gene is present as double copies in the Nicotiana glutinosa genome. Expression of the NgPI gene is rapidly and transiently induced by tobacco mosaic virus infection at a time earlier than apparent lesions of hypersensitive responses appear on the leaves.

ISSN 

0167-4781

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2017-04-19


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