Identification of a clip domain serine proteinase involved in immune defense in Chinese mitten crab Eriocheir sinensis.
Fish Shellfish Immunol
; 74: 332-340, 2018 Mar.
Article
em En
| MEDLINE
| ID: mdl-29305333
ABSTRACT
Clip-domain serine proteinase is an important serine proteinase family involved in many biological processes, which is only found in invertebrates. In the present study, the full-length cDNA of a clip domain serine proteinase (designed as EsCDSP) gene was cloned from Chinese mitten crab Eriocheir sinensis using rapid amplification of cDNA ends (RACE) technique. It was of 1488 bp with an open reading frame (ORF) of 1134 bp encoding a polypeptide of 377 amino acids. There were a signal peptide, a clip domain, and a Tryp_SPc domain in the deduced amino acid sequence of EsCDSP. Highly conserved cysteine residues were identified in the clip domain and Tryp_SPc domain. EsCDSP shared similarities of 40%-61% with CDSPs from Penaeus monodon (ACP19562.1), Scylla paramamosain (CCW43200.1), Drosophila melanogaster (NP_649734.2) and Delia antiqua (AAW57295.1). It was clustered with other CDSPs from crabs in the phylogenetic tree. EsCDSP transcript was highly expressed in hemocytes and it could response to the stimulations of Vibro anguillarum and Pichia pastoris. rEsCDSP could activate proPO system and significantly increase the PO activity of HLS. In addition, rEsCDSP could bond to Aeromonas hydrophila, Vibro anguillarum and Vibro alginolyticus, and reduced the mortality rate causing by pathogen infection. All the results suggested that EsCDSP was an important immune response participator involved in activation of the proPO system of crab.
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Texto completo:
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Regulação da Expressão Gênica
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Braquiúros
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Serina Proteases
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Imunidade Inata
Tipo de estudo:
Diagnostic_studies
Limite:
Animals
Idioma:
En
Ano de publicação:
2018
Tipo de documento:
Article