Linked Life Data

8021245

Source:http://linkedlifedata.com/resource/pubmed/id/8021245

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
26
pubmed:dateCreated
1994-7-29
pubmed:databankReference
pubmed:abstractText
In the ciliated protozoa, the germ line micronucleus carries DNA sequences that are eliminated during the developmental program that produces the somatic macronucleus. We have identified such a micronuclear element in an intron of a gene in the holotrichous ciliate, Tetrahymena thermophila. The macronuclear version of this gene, numbered from the transcription initiation site to the polyadenylation site, is 1569 nucleotides long and contains two introns: intron 1 from nucleotides 206 to 382 and intron 2 from nucleotides 665 to 898. The gene is transcribed into a stable polyadenylated mRNA which is predicted to encode a polypeptide with a highly repetitive structure and an unknown function. The micronuclear version of the gene contains a 2.9-kb sequence element, mse2.9, in intron 2. This element was characterized by sequencing two micronuclear genomic clones that contain 909 and 764 base pairs of micronucleus-specific sequence from its left and right ends, respectively. This sequence has an (A+T) content of 81% and is present as a single copy. The termini of mse2.9 are located within a 4-nucleotide direct repeat, TTAT, one copy of which is retained in the macronuclear gene, between positions 755 and 759. Other features near the termini of mse2.9 include a GC-rich sequence motif, CCAACCCGTTG, 31 nucleotides outside the left terminus and a 20-nucleotide palindrome 6 nucleotides outside the right terminus.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0021-9258
pubmed:author
pubmed:issnType
Print
pubmed:day
1
pubmed:volume
269
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
17428-33
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1994
pubmed:articleTitle
A germ line-specific sequence element in an intron in Tetrahymena thermophila.
pubmed:affiliation
Department of Biology, York University, Toronto, Ontario, Canada.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't