Ran binding protein RanBP1 in zebrafish embryonic development
Ran, which functions in nucleocytoplasmic transport and mitosis, binds to and is regulated in part by RanBP1. We have identified a zebrafish RanBP1 cDNA and report that it encodes for a polypeptide of 233 amino acids with considerable similarity to human and Xenopus RanBP1, despite the fact that it...
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Published in | Molecular reproduction and development Vol. 59; no. 3; pp. 235 - 248 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
New York
John Wiley & Sons, Inc
01.07.2001
Wiley-Liss |
Subjects | |
Online Access | Get full text |
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Summary: | Ran, which functions in nucleocytoplasmic transport and mitosis, binds to and is regulated in part by RanBP1. We have identified a zebrafish RanBP1 cDNA and report that it encodes for a polypeptide of 233 amino acids with considerable similarity to human and Xenopus RanBP1, despite the fact that it is 10% longer due to an extension at its carboxy terminus. RanBP1 mRNA is present as a maternal transcript and is expressed ubiquitously throughout the developing embryo. At the protein level, RanBP1 is present at all embryonic stages. Surprisingly, the ectopic overexpression of the protein had no obvious effect on embryogenesis. Attempts were also made to down‐regulate RanBP1 activity by RNA interference. Injecting double‐stranded RNA augmented both the mortality rate and the frequency of induced defects. Specific defects accompanied by changes in RanBP1 expression were not seen, leading us to propose that RNAi is not a reliable method for deregulating the activity of constitutively expressed genes, like RanBP1, in zebrafish. Mol. Reprod. Dev. 59:235–248, 2001. © 2001 Wiley‐Liss, Inc. |
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Bibliography: | ark:/67375/WNG-88BC8K1D-Z Both Steve Mangos and Barbara Vanderbeld contributed equally to this work. istex:0F3F83962325FBB4996A34D1FEC0010025E26A47 ArticleID:MRD1028 ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 ObjectType-Article-1 ObjectType-Feature-2 |
ISSN: | 1040-452X 1098-2795 |
DOI: | 10.1002/mrd.1028 |