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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
2007-12-31
pubmed:abstractText
The warm temperature acclimation related 65kDa protein (Wap65) in teleost fish shares high structural similarities with mammalian hemopexins. Recent studies using microarray analysis indicated that this temperature acclimation protein may also be involved in immune responses. To provide evidence of its potential involvement in immune responses after bacterial infections, we have identified and characterized two types of Wap65 genes in channel catfish, referred to as Wap65-1 and Wap65-2, respectively. While Wap65-1 and Wap65-2 are both structurally similar to the mammalian hemopexins, they exhibit highly differential patterns of spatial expression. Wap65-1 was expressed in a wide range of tissues, whereas Wap65-2 was only expressed in the liver. Their regulation with warm temperature and bacterial infections was also highly different: Wap65-1 was constitutively expressed, whereas Wap65-2 was highly regulated by both warm temperature and bacterial infections, and warm temperature and bacterial infections appeared to synergistically induce the expression of Wap65-2. The great contrast of expression patterns and regulation of the two catfish Wap65 genes suggested both neofunctionalization and partitioning of their functions. Phylogenetic analysis indicated that the duplicated catfish Wap65 genes were evolved not only from whole genome duplication, but also from tandem, intrachromosomal gene duplications. Taken together, the results of this study suggest that Wap65 genes are not only important for its classical role as a warm temperature acclimation protein, but more importantly, may also function as an immune response protein.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0161-5890
pubmed:author
pubmed:issnType
Print
pubmed:volume
45
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1458-69
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
2008
pubmed:articleTitle
The warm temperature acclimation protein Wap65 as an immune response gene: its duplicates are differentially regulated by temperature and bacterial infections.
pubmed:affiliation
The Fish Molecular Genetics and Biotechnology Laboratory, Department of Fisheries and Allied Aquacultures and Program of Cell and Molecular Biosciences, Aquatic Genomics Unit, Auburn University, Auburn, AL 36849, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S.