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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/26793

Title: Molecular cloning and phylogenetic analysis on α2-macroglobulin (α2-M) of white shrimp Litopenaeus vannamei
Authors: Yong-Chin Lin;Baskaralingam Vaseeharan;Jiann-Chu Chen
Contributors: NTOU:Department of Aquaculture
國立臺灣海洋大學:水產養殖學系
Keywords: Litopenaeus vannamei;α2-Macroglobulin;Moulting stage
Date: 2008
Issue Date: 2011-10-21T02:18:42Z
Publisher: Developmental & Comparative Immunology
Abstract: Abstract:The full-length sequence of α2-macroglobulin (α2-M) was cloned from the hemocytes of white shrimp Litopenaeus vannamei by reverse transcription polymerase chain reaction (RT-PCR), cloning and sequencing of overlapping PCR, and the rapid amplification of cDNA ends method. The α2-M cDNA consists of 4682 bp with an open reading frame of 4479 bp, a 52-bp 5′-untranslated region, and a 132-bp 3′-untranslated region. The predicted molecular mass of the mature protein (1475 amino acids) is 167.1 kDa, with an estimated pI of 5.70. The L. vannamei α2-M sequence contains putative functional domains including a bait region, a GCGEQNM (985–991) thiol ester domain, and a receptor-binding domain. Sequence comparison and phylogenetic analyses show that α2-M deduced amino acid sequence of L. vannamei has a high level of similarity to that of tiger shrimp Penaeus monodon and kuruma shrimp Marsupenaeus japonicus. The α2-M transcript was mainly expressed in hemocytes, and was significantly higher in premoult stage than in intermoult and postmoult stages.
Relation: 32(4), pp.317-329
URI: http://ntour.ntou.edu.tw/handle/987654321/26793
Appears in Collections:[水產養殖學系] 期刊論文

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