Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2010-10-29
pubmed:abstractText
Capsulin is one of the transcription factors involved in regulating cell differentiation but its biochemical properties and structural characteristics are still unclear. In the present study, we cloned capsulin from zebrafish, which produces large numbers of transparent embryos and has well-characterized developmental stages. By alignment, the deduced amino acid sequence of zebrafish Capsulin, which contains a putative bHLH motif, shares very high homology to that of other species with an 72-82% identity. Zebrafish Capsulin was also targeted to the nucleus of mammalian cells when overexpressed by transient transfection. In order to characterize the structural and biochemical properties of zebrafish Capsulin, a recombinant zebrafish Capsulin protein was expressed and purified in Escherichia coli. By circular dichroism spectroscopy, Capsulin was shown to be 55% ?-helical. The size distribution assay by analytical ultracentrifugation indicated that it existed as a monomer-dimer mixture. The results suggested that the recombinant Capsulin has a well-organized and functional structure. Finally, endogenous Capsulin was distributed mainly in the epicardial cells of zebrafish by immunohistochemistry analysis using antibodies raised against zebrafish Capsulin. The present study not only helps us to comparatively analyze capsulin genes across species, but it also provides valuable structural information for further studies of Capsulin biological function in the future.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
1096-0279
pubmed:author
pubmed:copyrightInfo
Copyright © 2010 Elsevier Inc. All rights reserved.
pubmed:issnType
Electronic
pubmed:volume
75
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
21-7
pubmed:meshHeading
pubmed-meshheading:20627128-Amino Acid Sequence, pubmed-meshheading:20627128-Animals, pubmed-meshheading:20627128-Antibodies, pubmed-meshheading:20627128-Cell Line, pubmed-meshheading:20627128-Cell Nucleus, pubmed-meshheading:20627128-Cloning, Molecular, pubmed-meshheading:20627128-DNA, Complementary, pubmed-meshheading:20627128-Escherichia coli, pubmed-meshheading:20627128-Gene Expression, pubmed-meshheading:20627128-Humans, pubmed-meshheading:20627128-Molecular Sequence Data, pubmed-meshheading:20627128-Pericardium, pubmed-meshheading:20627128-Protein Conformation, pubmed-meshheading:20627128-Protein Multimerization, pubmed-meshheading:20627128-Recombinant Proteins, pubmed-meshheading:20627128-Sequence Alignment, pubmed-meshheading:20627128-Transcription Factors, pubmed-meshheading:20627128-Transfection, pubmed-meshheading:20627128-Zebrafish, pubmed-meshheading:20627128-Zebrafish Proteins
pubmed:year
2011
pubmed:articleTitle
Biochemical and structural properties of zebrafish Capsulin produced by Escherichia coli.
pubmed:affiliation
Department of Life Sciences and Institute of Genome Sciences, National Yang-Ming University, Taipei, Taiwan. cychou@ym.edu.tw
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't