Defensins and cystein rich peptides: two types of antimicrobial peptides in marine molluscs

This review focuses on defensins and cystein rich peptides, which are the most abundant natural antimicrobial peptides (AMPs) described in molluscs. These are compact peptides, 3-5 kDa in molecular mass, cationic and amphipatic; the presence of at least six cysteine residues forming three or four di...

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Main Author: G Arenas Díaz
Format: Article
Language:English
Published: University of Modena and Reggio Emilia 2010-06-01
Series:Invertebrate Survival Journal
Subjects:
Online Access:https://isj02.unimore.it/index.php/ISJ/article/view/218
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author G Arenas Díaz
author_facet G Arenas Díaz
author_sort G Arenas Díaz
collection DOAJ
description This review focuses on defensins and cystein rich peptides, which are the most abundant natural antimicrobial peptides (AMPs) described in molluscs. These are compact peptides, 3-5 kDa in molecular mass, cationic and amphipatic; the presence of at least six cysteine residues forming three or four disulfide bridges is their prime structural characteristic. A 3-D structural characterization of these molecules has been included in recent investigations, using currently-available techniques. AMPs have been purified from hemocytes, epithelial tissue and plasma as well as cloned and chemically synthesized. Their antibacterial activity against Gram-positive and Gram-negative bacteria and fungi has been shown; only a synthetic mytilin fragment has displayed activity against viruses.
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spelling doaj.art-772da1bf3ebf4e618c788e9dcfa615702022-12-21T20:16:26ZengUniversity of Modena and Reggio EmiliaInvertebrate Survival Journal1824-307X2010-06-0172Defensins and cystein rich peptides: two types of antimicrobial peptides in marine molluscsG Arenas Díaz0Laboratorio de Genética e Inmunología Molecular, Instituto de Biología, Campus Curauma, Pontificia Universidad Católica de Valparaíso, ChileThis review focuses on defensins and cystein rich peptides, which are the most abundant natural antimicrobial peptides (AMPs) described in molluscs. These are compact peptides, 3-5 kDa in molecular mass, cationic and amphipatic; the presence of at least six cysteine residues forming three or four disulfide bridges is their prime structural characteristic. A 3-D structural characterization of these molecules has been included in recent investigations, using currently-available techniques. AMPs have been purified from hemocytes, epithelial tissue and plasma as well as cloned and chemically synthesized. Their antibacterial activity against Gram-positive and Gram-negative bacteria and fungi has been shown; only a synthetic mytilin fragment has displayed activity against viruses.https://isj02.unimore.it/index.php/ISJ/article/view/218defensinscystein rich peptidesantimicrobial peptidesinnate immunitymarine molluscs
spellingShingle G Arenas Díaz
Defensins and cystein rich peptides: two types of antimicrobial peptides in marine molluscs
Invertebrate Survival Journal
defensins
cystein rich peptides
antimicrobial peptides
innate immunity
marine molluscs
title Defensins and cystein rich peptides: two types of antimicrobial peptides in marine molluscs
title_full Defensins and cystein rich peptides: two types of antimicrobial peptides in marine molluscs
title_fullStr Defensins and cystein rich peptides: two types of antimicrobial peptides in marine molluscs
title_full_unstemmed Defensins and cystein rich peptides: two types of antimicrobial peptides in marine molluscs
title_short Defensins and cystein rich peptides: two types of antimicrobial peptides in marine molluscs
title_sort defensins and cystein rich peptides two types of antimicrobial peptides in marine molluscs
topic defensins
cystein rich peptides
antimicrobial peptides
innate immunity
marine molluscs
url https://isj02.unimore.it/index.php/ISJ/article/view/218
work_keys_str_mv AT garenasdiaz defensinsandcysteinrichpeptidestwotypesofantimicrobialpeptidesinmarinemolluscs