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A prophenoloxidase from Artemia sinica: cDNA cloning, expression and activity analysis during early development.
MedLine Citation:
PMID:  21963856     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
To understand the defense mechanisms of Crustacean animals, brine shrimp Artemia sinica prophenoloxidase (AsproPO) cDNA was cloned and its expression at early developmental stages was examined by reverse-transcription PCR (RT-PCR) and semi-quantitative RT-PCR, and activity of phenoloxidase (PO) at different developmental stages was further detected by using l-3,4-dihydroxyphenylalanine (l-DOPA) as a specific substrate in this study. It was found that the full-length of AsproPO cDNA is 2125 bp and it contains an open reading frame of 2100 bp encoding a protein of 699 amino acids. The deduced amino acid sequence of AsproPO has two putative copper binding sites highly conserved in Arthropods. Semi-quantitative RT-PCR analyses showed that the gene of AsproPO expressed at Emergence, Instar I and Instar II stages but did not at 0 h and 6 h stages. Activity measurement showed that PO activity could only be detected at Instar II stage but the other measured stages. All these implied that Artemia proPO immune system was complexly modulated during early development.
Authors:
Tingjun Fan; Liyan Wang; Xianyuan Fan; Bin Xu; Miaomiao Yu; Guojian Jiang
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-9-24
Journal Detail:
Title:  Fish & shellfish immunology     Volume:  -     ISSN:  1095-9947     ISO Abbreviation:  -     Publication Date:  2011 Sep 
Date Detail:
Created Date:  2011-10-3     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9505220     Medline TA:  Fish Shellfish Immunol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011. Published by Elsevier Ltd.
Affiliation:
Department of Marine Biology, College of Marine Life Sciences, Ocean University of China, Yushan Road 5, Qingdao 266003, People's Republic of China.
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