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Ltr

Ltr --> long-terminal repeat

(Science: molecular biology) identical dna sequences, several hundred nucleotides long, found at either end of transposons and the proviral dna, formed by reverse transcription of retroviral rna.

They are thought to have an essential role in integrating the transposon or provirus into the host dna. Long terminal repeats have inverted repeats, that is, sequences close to either end are identical when read in opposite directions. In proviruses the upstream long-terminal repeat acts as a promoter and enhancer and the downstream long-terminal repeat as a polyadenylation site.

Acronym: ltr


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dialogue for short film

... Neuralgia When I started the stochastic activation of CD4 T cells, the latency was overcome by the Tat-mediated transactivation of the LTR, so the virus gene transcription and production of infection-competent viral particles reconstituted the viral reservoir. Thanks a bunch!!

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by ricketybridge
Sat Jan 09, 2010 12:56 am
 
Forum: Microbiology
Topic: dialogue for short film
Replies: 5
Views: 3191

plant embryo

... by the continuous division of the zygote[which is a single cell]..so its a mass of cells, undifferentiated at the beginning and differentiates ltr..

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by vinaya
Thu May 17, 2007 7:43 am
 
Forum: Cell Biology
Topic: plant embryo
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The Fiber Disease

... endogenous HERV-K progeny. We also show that this element amplifies via an extracellular pathway involving reinfection, at variance with the non-LTR-retrotransposons (LINEs SINEs) or LTR-retrotransposons, thus recapitulating ex vivo the molecular events responsible for its dissemination in the ...

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by London
Fri Dec 01, 2006 4:22 pm
 
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 4468219

The Fiber Disease

... including pea, broad bean, Ipomoea, Vitis, Medicago and carrot warrants the current investigation. A large number of fragments that contain RnaseH-LTR regions of the Ty1-copia were amplified and cloned by following procedures developed by Pearce et al, 1999. Some modifications to the original method ...

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by London
Sun Sep 03, 2006 11:51 am
 
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 4468219

Viral mRNA and RNA

If i din recall wrongly, my lecturer mention about LTR (Light Tandem Repeat) region at the 5' end of mRNA for some viruses... and one sequence of RNA or DNA can generate many differents mRNA depending on the open reading frame on the RNA or DNA, am ...

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by Nite
Thu Jan 26, 2006 3:28 pm
 
Forum: Genetics
Topic: Viral mRNA and RNA
Replies: 5
Views: 2164


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