The gene for human U2 snRNP auxiliary factor small 35-kDa subunit (U2AF1) maps to the progressive myoclonus epilepsy (EPM1) critical region on chromosome 21q22.3.

Abstract:

:We used targeted exon trapping to clone portions of genes from human chromosome 21q22.3. One trapped sequence showed complete homology with the cDNA of human U2AF35 (M96982; HGM-approved nomenclature U2AF1), which encodes for the small 35-kDa subunit of the U2 snRNP auxiliary factor. Using the U2AF1 cDNA as a probe, we mapped this gene to cosmid Q15D2, a P1, and YAC 350F7 of the Chumakov et al. (Nature 359: 380, 1992) contig, close to the cystathionine-beta-synthase gene (CBS) on 21q22.3. This localization was confirmed by PCR using oligonucleotides from the 3' UTR and by FISH. As U2AF1 associates with a number of different factors during mRNA splicing, overexpression in trisomy 21 individuals could contribute to some Down syndrome phenotypes by interfering with the splicing process. Furthermore, because this gene maps in the critical region for the progressive myoclonus epilepsy I locus (EPM1), mutation analysis will be carried out in patients to evaluate the potential role of U2AF1 as a candidate for EPM1.

journal_name

Genomics

journal_title

Genomics

authors

Lalioti MD,Gos A,Green MR,Rossier C,Morris MA,Antonarakis SE

doi

10.1006/geno.1996.0196

subject

Has Abstract

pub_date

1996-04-15 00:00:00

pages

298-300

issue

2

eissn

0888-7543

issn

1089-8646

pii

S0888-7543(96)90196-2

journal_volume

33

pub_type

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