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. 1991 Jan 3;349(6304):38-44.
doi: 10.1038/349038a0.

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

C J Brown  1 , A Ballabio, J L Rupert, R G Lafreniere, M Grompe, R Tonlorenzi, H F Willard
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A gene from the region of the human X inactivation centre is expressed exclusively from the inactive X chromosome

C J Brown et al. Nature. .

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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