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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2003-8-4
pubmed:databankReference
pubmed:abstractText
A full-length cDNA encoding CCAAT/enhancer-binding protein beta (C/EBPbeta) was cloned from rainbow trout by anchored PCR. The putative 291 amino acid protein has 53% and 32% identity to the zebrafish and Japanese flounder sequences, respectively, and 30-34% identity to tetrapod homologues. This clone contains most conserved C/EBPbeta domains except the second transactivation domain just like the zebrafish homologue. Also similar to zebrafish, rainbow trout produces only shorter C/EBPbeta isoforms (LAP and LIP) but not the longer isoform (LAP*). However, unlike the zebrafish and Japanese flounder homologues, trout C/EBPbeta has the short open reading frame (uORF) upstream of the start codon for LAP but in an alternate reading frame, a feature of tetrapod C/EBPbeta genes. In normal rainbow trout, C/EBPbeta mRNA was detected in peripheral blood leukocytes, head kidney, posterior kidney, liver, spleen, gills, intestine and muscle. RT-PCR revealed that transcript levels of trout C/EBPbeta are clearly higher in sodium alginate-induced peritoneal cells than in head kidney and peritoneal cells of saline-injected fish or head kidney cells of alginate-injected fish. Together with expression in immunologically important tissues, this indicates that C/EBPbeta is likely to be involved in the immune response just as in mammals. Southern hybridization suggested that C/EBPbeta is a single copy gene. There are no introns in this C/EBPbeta gene, just like the mammalian homologues. These data suggest that we have obtained the trout ortholog of C/EBPbeta.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0093-7711
pubmed:author
pubmed:issnType
Print
pubmed:volume
55
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
253-61
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2003
pubmed:articleTitle
Molecular cloning and characterization of rainbow trout (Oncorhynchus mykiss) CCAAT/enhancer binding protein beta.
pubmed:affiliation
Department of Biology, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, N2L 3G1, Canada.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't