Portal de Periódicos da CAPES

Artigo Acesso aberto Produção Nacional Revisado por pares

BIBTEX RIS

Structural and biological characterization of Nattectin, a new C-type lectin from the venomous fish Thalassophryne nattereri

2011; Elsevier BV; Volume: 93; Issue: 6 Linguagem: Inglês

10.1016/j.biochi.2011.03.001

1638-6183

Mônica Lopes‐Ferreira, Geraldo Santana Magalhães, Jorge Hernández Fernández, Inácio L.M. Junqueira-de-Azevedo, Paulo Le Ho, Carla Lima, Richard H. Valente, Ana Maria Moura‐da‐Silva,

Antimicrobial Peptides and Activities

Lectins are glycan-binding receptors that recognize glycan epitopes on foreign pathogens and in the host systems. They can be involved in functions that include innate immunity, development, immune regulation and homeostasis. Several lectins have been purified and characterized from fish species. In this work, using cation-exchange chromatography, a galactose-specific lectin belonging to the family of C-type lectins was isolated from the venom of the Brazilian venomous fish Thalassophryne nattereri. Nattectin is a basic, non-glycosilated, 15 kDa monomeric protein. It exhibits hemagglutination activity that is independent of Ca(2+). We also demonstrated a lectin activity for Nattectin in the innate immune system, especially in neutrophil mobilization in mice, indicating that marine organisms are source of immunomodulator agents.