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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1998-9-17
pubmed:abstractText
Overlapping cDNA partial clones of pituitary prolactin from the marsupial brushtail possum (Trichosurus vulpecula) were isolated and sequenced. The nucleotide and deduced amino acid sequences showed high sequence identity with pig prolactin (84.3 and 92.5%, respectively) and all of the expected structural features of a quadruped prolactin. A prolactin gene tree was constructed and rates of evolution calculated for possum along with several mammalian and nonmammalian prolactins. Possum prolactin was most closely linked to the prolactins of eutherian mammals but branched from the main mammalian line well before the eutherian prolactins. The prolactin/GH family shows variable rates of evolution ranging from 0.3 substitutions/amino acid site/year x 10(9) for pig prolactin to 7.0 substitutions/ amino acid site/year x 10(9) for the mouse. Since divergence from the eutherian mammals, possum prolactin has shown a slow rate of evolution (0.2 substitutions/ amino acid site/year x 10(9)). As expected, the prolactin gene was expressed in the possum pituitary gland but not in the liver, lung, kidney, heart, or mammary gland.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0016-6480
pubmed:author
pubmed:issnType
Print
pubmed:volume
111
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
61-7
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1998
pubmed:articleTitle
Cloning and sequence analysis of a pituitary prolactin cDNA from the brushtail possum (Trichosurus vulpecula).
pubmed:affiliation
Department of Physiology and Pharmacology, University of Queensland, Australia. j.curlewis@mailbox.uq.oz.au
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't