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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2001-4-2
pubmed:abstractText
Unusual two-domain arginine kinases (AKs) arose independently at least two times during molecular evolution of phosphagen kinases: AKs from the primitive sea anemone Anthopleurura japonicus and from the clam Pseudocardium sachalinensis. To elucidate its unusual evolution, the structures of Anthopleura and Pseudocardium AK genes have been determined. The Anthopleura gene consisted of 4 exons and 3 introns: two domains are linked by a bridge intron, and each domain contains one intron in different positions. On the other hand, the Pseudocardium gene consisted of 10 exons and 9 introns: two domains are also linked by a bridge intron, and domains 1 and 2 contains 3 and 5 introns, respectively, of which 3 introns are located in exactly same positions. Since the two domains of Pseudocardium AK are estimated to have diverged about 290 million years ago, the 3 introns have been conserved at least for this long. Comparison of intron positions in Anthopleura, Pseudocardium and C. elegans AK genes indicates that there is no intron conserved through the three AK lineages, in sharp contrast to relatively conservative intron positions in creatine kinase (CK) gene family.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
1096-4959
pubmed:author
pubmed:issnType
Print
pubmed:volume
127
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
513-8
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2000
pubmed:articleTitle
Gene structure of two-domain arginine kinases from Anthopleura japonicus and Pseudocardium sachalinensis.
pubmed:affiliation
Laboratory of Biochemistry, Faculty of Science, Kochi University, Japan. suzuki@sc.kochi-u.ac.jp
pubmed:publicationType
Journal Article, Comparative Study