Linked Life Data

9419242

Source:http://linkedlifedata.com/resource/pubmed/id/9419242

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
1998-2-19
pubmed:databankReference
pubmed:abstractText
The evolutionary relationship of muscle and nonmuscle actin isoforms in deuterostomia was studied by the isolation and characterization of two actin genes from the cephalochordate Branchiostoma lanceolatum and two from the hemichordate Saccoglossus kowalevskii The Branchiostoma genes specify a muscle and a nonmuscle actin type, respectively. Together with earlier results on muscle actins from vertebrates and urochordates, a N-terminal sequence signature is defined for chordate muscle actins. These diagnostic amino acid residues separate the chordates from the echinoderms and other metazoa. Although the two Saccoglossus actins characterized so far lack the diagnostic residues, in line with the presumptive phylogenetic position of hemichordates outside the chordates, a definitive conclusion can only be expected once the full complement of actin genes of Saccoglossus is established. Comparison of the intron patterns of the various deuterostomic actin genes shows that intron 330-3, which is present in all vertebrate genes, is conspicuously absent from nonvertebrate genes. The possible origin of this intron is discussed.
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0022-2844
pubmed:author
pubmed:issnType
Print
pubmed:volume
45
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
653-60
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
1997
pubmed:articleTitle
Deuterostomic actin genes and the definition of the chordates: cDNA cloning and gene organization for cephalochordates and hemichordates.
pubmed:affiliation
Department of Biochemistry, Max Planck Institute for Biophysical Chemistry, Goettingen, Germany.
pubmed:publicationType
Journal Article