A sugarcane cystatin: recombinant expression, purification, and antifungal activity.

Abstract:

:Plants possess several defense mechanisms against pathogenic attack. One of these defenses is the use of protease inhibitor proteins, which interfere in the development and growth of pathogens. Sugarcane productivity can be impacted by the plant's susceptibility to fungal diseases that result in production losses. A relevant line of investigation, therefore, is into the plant's natural defense mechanisms for the control of phytopathogens using cystatins-proteins that specifically inhibit cysteine proteases. In this paper, we discuss the expression, in Escherichia coli, of a sugarcane cystatin, its purification, antifungal activity, and circular dichroism to monitor correct folding. These studies revealed a secondary structure similar to that of the oryzacystatin I of rice. Moreover, the purified protein proved capable of inhibiting the growth of the filamentous fungus Trichoderma reesei, suggesting that it can also be employed to inhibit the growth of pathogenic sugarcane fungi.

authors

Soares-Costa A,Beltramini LM,Thiemann OH,Henrique-Silva F

doi

10.1016/s0006-291x(02)02046-6

subject

Has Abstract

pub_date

2002-09-06 00:00:00

pages

1194-9

issue

5

eissn

0006-291X

issn

1090-2104

pii

S0006291X02020466

journal_volume

296

pub_type

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