Please use this identifier to cite or link to this item: http://www.repositorio.ufc.br/handle/riufc/58973
Title in Portuguese: Castor bean cake contains a trypsin inhibitor that displays antifungal activity against Colletotrichum gloeosporioides and inhibits the midgut proteases of the dengue mosquito larvae
Author: Silva, Rodolpho Glauber Guedes
Vasconcelos, Ilka M.
Bastos Filho, Acrísio José Uchôa
Carvalho, Ana Fontenele Urano
Souza, Terezinha M.
Gondim, Darcy Mayra Furtado
Varela, Anna Lídia Nunes
Oliveira, José Tadeu Abreu
Keywords: Ricinus communis
Trypsin inhibitor
Aedes aegypti
Colletotrichum gloeosporioides
Issue Date: 2015
Citation: SILVA, Rodolpho G. G. et al. Castor bean cake contains a trypsin inhibitor that displays antifungal activity against Colletotrichum gloeosporioides and inhibits the midgut proteases of the dengue mosquito larvae. Industrial crops and products, [s.l.], v. 70, p. 48-55, 2015.
Abstract in Portuguese: A novel trypsin inhibitor, named RcTI, was purified from castor bean cake (Ricinus communis L.) by heat treatment followed by chromatography on anhydrotrypsin-Sepharose 4B and Resource Q. RcTI is a 14 kDa competitive inhibitor with pI 5.2 and a dissociation constant (Ki) of 1.9 × 10−5 mM. The amino-terminal sequence showed similarity with a 2S sulfur-rich seed storage protein (83%) and napin-like protein (48%). RcTI was stable over a broad pH range and is exceptionally resistant to heating as it retained high inhibitory activity toward trypsin after incubation at 100 ◦C for 2 h. RcTI (13 g) inhibited the spore germination of the phytopatogenic fungus Colletotrichum gloeosporioides and promoted 91% inhibition of the proteases from the midgut of Aedes aegypti larvae. The results of the present study indicate that RcTI has biotechnological potential as an alternative agent to combat the important phytopathogen C. gloeosporioides and the larvae of A. aegypti.
URI: http://www.repositorio.ufc.br/handle/riufc/58973
metadata.dc.type: Artigo de Periódico
ISSN: 0926-6690
Appears in Collections:DBIO - Artigos publicados em revista científica

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