Linked Life Data

17333260

Source:http://linkedlifedata.com/resource/pubmed/id/17333260

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2007-3-29
pubmed:abstractText
Hox genes form clusters. Invertebrates and Amphioxus have only one hox cluster, but in vertebrates, they are multiple, i.e., four in the basal teleost fish Polyodon and tetrapods (HoxA, B, C, D), but seven or eight in common teleosts. We earlier completely sequenced the entire hox gene loci in medaka fish, showing a total of 46 hox genes to be encoded in seven clusters (hoxAa, Ab, Ba, Bb, Ca, Da, Db). Among them, hoxAa, hoxAb and hoxDa clusters are presumed to be important for fin-to-limb evolution because of their key role in forelimb and pectoral fin development. In the present study, we compared genome organization and nucleotide sequences of the hoxAa and hoxAb clusters to these of tetrapod HoxA clusters, and found greater similarity in hoxAa case. We then analyzed expression of Abd-B family genes in the clusters. In the trunk, those from the hoxAa cluster, i.e., hoxA9a, hoxA10a, hoxA11a and hoxA13a, were expressed in a manner keeping the colinearity rule of the hox expression as those of tetrapods, while those from the hoxAb cluster, i.e., hoxA9b, hoxA10b, hoxA11b and hoxA13b, were not. In the pectoral fins, the hoxAa cluster was expressed in split domains and did not obey the rule. By contrast, those from the hoxAb and hoxDa clusters were expressed in a manner keeping the rule, i.e., an ancestral pattern similar to those of tetrapods. It is plausible that this differential expression of the two clusters is caused by changes occurred in global control regions after cluster duplications.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0949-944X
pubmed:author
pubmed:issnType
Print
pubmed:volume
217
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
263-73
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
Duplicated Abd-B class genes in medaka hoxAa and hoxAb clusters exhibit differential expression patterns in pectoral fin buds.
pubmed:affiliation
Division of Biological Science, Graduate School of Science, Nagoya University, Nagoya, Aichi 464-8602, Japan.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't