| cDNA cloning of the immunoglobulin heavy chain genes in banded houndshark Triakis scyllium. | |
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MedLine Citation:
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PMID: 20688169 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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In this study, cDNAs encoding the secreted forms of the immunoglobulin (Ig) heavy chains of IgM, IgNAR, and IgW were cloned from the banded houndshark Triakis scyllium. Two clones for the IgM heavy chains encoded 569 and 570 amino acids, whose conserved (C) region showed 47-70% amino acid identities to those reported in other cartilaginous fish. Four clones for the IgNAR encoded 673-670 amino acids with conserved Ig-superfamily domains. The IgNAR C region showed 56-69% amino acid identities to those so far reported. High-throughput sequencing revealed that in most of the IgNAR sequences, the two variable regions (CDR1 and CDR3) each possess a cysteine residue. Three types of IgW were identified; one contained Ig-superfamily domains that are in other cartilaginous fish, one lacks the 3rd domain in the constant region, and one lacks the 3rd to 5th domains. Despite these differences, the IgW isoforms clustered with IgWs of other cartilaginous fishes and the C regions showed 47-89% amino acid identities. mRNAs for IgM and IgNAR were detected in various tissues, while IgW mRNA was mainly detected in pancreas. The banded hounded shark also has IgM, IgW and IgNAR as well as the other cartilaginous fish with unique IgW isoform. |
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Authors:
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Yuka Honda; Hidehiro Kondo; Christopher Marlowe A Caipang; Ikuo Hirono; Takashi Aoki |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-08-03 |
Journal Detail:
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Title: Fish & shellfish immunology Volume: 29 ISSN: 1095-9947 ISO Abbreviation: Fish Shellfish Immunol. Publication Date: 2010 Nov |
Date Detail:
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Created Date: 2010-09-06 Completed Date: 2011-01-18 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9505220 Medline TA: Fish Shellfish Immunol Country: England |
Other Details:
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Languages: eng Pagination: 854-61 Citation Subset: IM |
Copyright Information:
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Copyright 2010 Elsevier Ltd. All rights reserved. |
Affiliation:
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Laboratory of Genome Science, Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato, Tokyo 108-8477, Japan. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Base Sequence Cloning, Molecular Conserved Sequence / genetics DNA Primers / genetics DNA, Complementary / genetics Gene Expression / immunology* Genes, Immunoglobulin Heavy Chain / genetics* Molecular Sequence Data Organ Specificity / immunology Reverse Transcriptase Polymerase Chain Reaction Sequence Analysis, DNA Sharks / genetics*, immunology |
| Chemical | |
Reg. No./Substance:
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0/DNA Primers; 0/DNA, Complementary |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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