Molecular cloning and functional characterization of Argonaute-3 gene from Penaeus monodon.
Fish Shellfish Immunol
; 35(3): 874-82, 2013 Sep.
Article
em En
| MEDLINE
| ID: mdl-23823130
ABSTRACT
Argonaute (Ago) proteins play a crucial role in the shrimp RNA interference pathway. In this study, we identified and characterized a novel Ago gene from black tiger shrimp, Penaeus monodon. The complete open reading frame of P. monodon Ago3 (PmAgo3) consisted of 2559 nucleotides encoding a polypeptide of 852 amino acids with a predicted molecular weight of 97 kDa and an isoelectric point of 9.42. Analysis of the deduced amino acid sequence of PmAgo3 revealed the presence of two signature domains of the proteins in Argonaute family including PAZ and PIWI. Phylogenetic analysis indicated that PmAgo3 is classified into Ago subfamily and shared the highest amino acid sequence identity (83%) with Litopenaeus vannamei Ago2. Monitoring of the PmAgo3 expression by quantitative real-time PCR revealed that this gene was significantly up-regulated following dsRNA administration, while no significant difference in its expression was observed following yellow head virus (YHV) challenge. In contrast, inhibition of YHV mRNA expression was observed in PmAgo3-knockdown shrimp. These data imply that PmAgo3 is involved in the dsRNA-mediated gene silencing mechanism and plays an important role in YHV replication in the black tiger shrimp.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Regulação da Expressão Gênica
/
Clonagem Molecular
/
Penaeidae
/
Proteínas Argonautas
Limite:
Animals
Idioma:
En
Revista:
Fish Shellfish Immunol
Assunto da revista:
BIOLOGIA
/
MEDICINA VETERINARIA
Ano de publicação:
2013
Tipo de documento:
Article
País de afiliação:
Tailândia