rdf:type |
|
lifeskim:mentions |
|
pubmed:issue |
2
|
pubmed:dateCreated |
1986-6-6
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pubmed:databankReference |
|
pubmed:abstractText |
The td gene contains a 735 bp open reading frame within its 1017 bp intron. A 12 nucleotide stretch may form a stable secondary structure with the putative Shine-Dalgarno sequence of the intron open reading frame and thus impair its translation. SP6 RNA polymerase transcripts of the td gene synthesized in vitro at 40 degrees C encompass a 2.7 kb primary transcript, a 1.7 kb mRNA, and a 1 kb intron RNA. The excised intron RNA consisted of linear and cyclized forms. RNAase H studies and resistance of the cyclized intron to linearization by HeLa cell debranching enzyme suggest it to be circular. Self-splicing of isolated td primary transcript occurred only marginally at 28 degrees C, but increased progressively to 50 degrees C, and required the presence of both Mg++ and a guanosine cofactor. An internal guide sequence is evident which may align the 5' splice site with the 3' end, presumably for precise exon ligation.
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pubmed:grant |
|
pubmed:language |
eng
|
pubmed:journal |
|
pubmed:citationSubset |
IM
|
pubmed:chemical |
|
pubmed:status |
MEDLINE
|
pubmed:month |
Apr
|
pubmed:issn |
0092-8674
|
pubmed:author |
|
pubmed:issnType |
Print
|
pubmed:day |
25
|
pubmed:volume |
45
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
157-66
|
pubmed:dateRevised |
2007-11-14
|
pubmed:meshHeading |
pubmed-meshheading:3698096-Base Sequence,
pubmed-meshheading:3698096-DNA-Directed RNA Polymerases,
pubmed-meshheading:3698096-Genes,
pubmed-meshheading:3698096-Genes, Viral,
pubmed-meshheading:3698096-Guanosine,
pubmed-meshheading:3698096-Magnesium,
pubmed-meshheading:3698096-Nucleic Acid Conformation,
pubmed-meshheading:3698096-RNA, Messenger,
pubmed-meshheading:3698096-RNA, Viral,
pubmed-meshheading:3698096-RNA Splicing,
pubmed-meshheading:3698096-T-Phages,
pubmed-meshheading:3698096-Thymidylate Synthase,
pubmed-meshheading:3698096-Viral Proteins
|
pubmed:year |
1986
|
pubmed:articleTitle |
Characterization of the intron in the phage T4 thymidylate synthase gene and evidence for its self-excision from the primary transcript.
|
pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.,
Research Support, U.S. Gov't, Non-P.H.S.
|