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Type: Artigo
Title: Exploiting The Biological Roles Of The Trypsin Inhibitor From Inga Vera Seeds: A Multifunctional Kunitz Inhibitor
Author: Bezerra
Cezar da Silva; Ramalho de Oliveira
Caio Fernando; Tavares Machado
Olga Lima; Vieira de Mello
Gabriela Souto; da Rocha Pitta
Maira Galdino; Barreto de Melo Rego
Moacyr Jesus; Napoleao
Thiago Henrique; Guedes Paiva
Patricia Maria; Ferreira Ribeiro
Suzanna de Fatima; Gomes
Valdirene Moreira; Silva
Osmar Nascimento; Maria-Neto
Simone; Franco
Octavio Luiz; Rodrigues Macedo
Maria Ligia
Abstract: Here, the purification, biochemical and biological properties of a trypsin inhibitor from Ingot vera seeds (IVTI) are described. Partial amino acid sequence of IVTI showed that it belongs to the MEROPS 103 Kunitz inhibitor family. Moreover, it is composed of a single 20 kDa polypeptide chain with one disulfide bridge and was capable of inhibiting bovine trypsin at a 1:1 molar ratio with a 1.15 nM inhibition constant. IVTI was stable over a wide range of temperature, pH and concentration of a reducing agent. IVTI also inhibited the trypsin-like enzymes from the midgut of lepidopteran pests, such as Anagasta kuehniella (89%), Spodoptera frugiperda (83%), Corcyra cephalonica (80%), Heliothis virescens (70%) and Helicoverpa zea (64%). Furthermore, bioinsecticidal assays against A. kuehniella demonstrated that IVTI affected larval development by impairing weight gain and survival, as well as altering the duration of the larval cycle. IVTI was also fungicidal to Candida buinensis and bacteriostatic agent to Escherichia coli. Further assays revealed that IVTI is a chemopreventive agent against human epithelial colorectal adenocarcinoma cells (CACO-2), reducing cell viability by 70% at 200 mu g mL(-1). In summary, these results demonstrate the multifaceted potential of IVTI as a biotechnological tool for agriculture and healthcare. (C) 2016 Elsevier Ltd. All rights reserved.
Subject: Inga Vera
Kunitz Inhibitor
Editor: Elsevier Sci Ltd
Citation: Process Biochemistry. Elsevier Sci Ltd, v. 51, p. 792 - 803, 2016.
Rights: fechado
Identifier DOI: 10.1016/j.procbio.2016.03.008
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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