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Journal ArticleDOI

A gene from the region of the human X inactivation centre is expressed exclusively from the inactive X chromosome

TLDR
This gene, called XIST (for Xi-specific transcripts), is a candidate for a gene either involved in or uniquely influenced by the process of X inactivation, and is described as an X-linked gene with a novel expression pattern.
Abstract
X-chromosome inactivation results in the cis-limited dosage compensation of genes on one of the pair of X chromosomes in mammalian females. Although most X-linked genes are believed to be subject to inactivation, several are known to be expressed from both active and inactive X chromosomes. Here we describe an X-linked gene with a novel expression pattern--transcripts are detected only from the inactive X chromosome (Xi) and not from the active X chromosome (Xa). This gene, called XIST (for Xi-specific transcripts), is a candidate for a gene either involved in or uniquely influenced by the process of X inactivation.

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Journal ArticleDOI

Evolution and functions of long noncoding RNAs

TL;DR: The evolution of long noncoding RNAs and their roles in transcriptional regulation, epigenetic gene regulation, and disease are reviewed.
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Chromatin signature reveals over a thousand highly conserved large non-coding RNAs in mammals

TL;DR: It is demonstrated that specific lincRNAs are transcriptionally regulated by key transcription factors in these processes such as p53, NFκB, Sox2, Oct4 (also known as Pou5f1) and Nanog, defining a unique collection of functional linc RNAs that are highly conserved and implicated in diverse biological processes.
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Genome Regulation by Long Noncoding RNAs

TL;DR: Long noncoding RNAs (lncRNAs) as discussed by the authors form extensive networks of ribonucleoprotein (RNP) complexes with numerous chromatin regulators and then target these enzymatic activities to appropriate locations in the genome.
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Functional Classification and Experimental Dissection of Long Noncoding RNAs

TL;DR: This review categorizes lncRNA loci into those that regulate gene expression in cis versus those that perform functions in trans and proposes an experimental approach to dissect lncRNAs activity based on these classifications.
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Modular regulatory principles of large non-coding RNAs

TL;DR: This work synthesizes studies to provide an emerging model whereby large ncRNAs might achieve regulatory specificity through modularity, assembling diverse combinations of proteins and possibly RNA and DNA interactions.
References
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Journal ArticleDOI

Isolation of biologically active ribonucleic acid from sources enriched in ribonuclease.

TL;DR: In this article, the rat pancreas RNA was used as a source for the purification of alpha-amylase messenger ribonucleic acid (RBA) using 2-mercaptoethanol.
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Rapid production of full-length cDNAs from rare transcripts: amplification using a single gene-specific oligonucleotide primer

TL;DR: The efficacy of this cDNA cloning strategy was demonstrated by isolating cDNA clones of mRNA from int-2, a mouse gene that expresses four different transcripts at low abundance, the longest of which is approximately 2.9 kilobases.
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Gene Action in the X -chromosome of the Mouse ( Mus musculus L.)

TL;DR: Ohno and Hauschka1 showed that in female mice one chromosome of mammary carcinoma cells and of normal diploid cells of the ovary, mammary gland and liver was heteropyKnotic and suggested that the so-called sex chromatin was composed of one heteropyknotic X-chromosome.
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RNA splice junctions of different classes of eukaryotes: sequence statistics and functional implications in gene expression.

TL;DR: A striking similarity among the rare splice junctions which do not contain AG at the 3' splice site or GT at the 5'splice site indicates the existence of special mechanisms to recognize them, and that these unique signals may be involved in crucial gene-regulation events and in differentiation.
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Recognition of protein coding regions in DNA sequences

TL;DR: The test has been thoroughly proven on 400,000 bases of sequence data: it misclassifies 5% of the regions tested and gives an answer of "No Opinion" one fifth of the time.
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