Linked Life Data

3700375

Source:http://linkedlifedata.com/resource/pubmed/id/3700375

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
13
pubmed:dateCreated
1986-5-30
pubmed:abstractText
Using gel and ion-exchange chromatography monitored by radioimmunoassays specific for sequences essential in the processing of preprogastrin and preprocholecystokinin, the products were characterized in extracts of porcine pituitary lobes before and after incubation with trypsin, carboxypeptidase B, and arylsulfatase. The intermediate and neural lobes contained only fully activated (i.e. alpha-amidated) preprogastrin products (component I, gastrin-34, and gastrin-17). In contrast, the anterior lobe contained, in addition to traces of alpha-amidated gastrin (2 pmol/g), hundredfold higher amounts of a nonamidated progastrin (189 pmol/g; Mr approximately 7000) and two nonamidated procholecystokinin fragments (75 pmol/g; Mr approximately 7000 and 5000). These results show that hormone genes, in spite of translation of their mRNA, are not necessarily expressed in functional peptides in cells outside the principal production regions. Hence, the study indicates that differentiation of endocrine cells may be controlled at the post-translational level.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0021-9258
pubmed:author
pubmed:issnType
Print
pubmed:day
5
pubmed:volume
261
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
5841-7
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1986
pubmed:articleTitle
Accumulation of nonamidated preprogastrin and preprocholecystokinin products in porcine pituitary corticotrophs. Evidence of post-translational control of cell differentiation.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't