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A gene, designated GS1, was identified by its association with a CpG island approximately 100 kb telomeric to the steroid sulfatase (STS) locus on the distal short arm of the human X chromosome. Both cDNA and genomic clones of the GS1 gene have been isolated and characterized. The cDNA clone detects a 2.3 kb transcript in human placenta and fibroblasts, and may encode a protein of 214 amino acid residues. Although sequences homologous to GS1 cDNA are present on chromosomes 1, 20, X, and Y, the functional GS1 gene is on the X chromosome. The GS1 gene appears to be non-essential, as there are no obvious clinical differences between STS deficient patients with point mutations in the STS gene, and patients with a deletion of the STS and GS1 genes. The GS1 gene is expressed from mouse-human cell hybrids containing active or inactive human X chromosomes, indicating that it escapes X inactivation. Characterization of GS1 genomic clones revealed that the gene consists of 4 exons spanning over 105 kb, with its transcriptional direction opposite to that of the STS gene. The isolation and characterization of a new gene which escapes X inactivation from distal Xp is of interest as it adds to our understanding of the structural organization of the human X chromosome and may help in providing clues regarding the mechanism of X-inactivation.
P H Yen, and
J Ellison, and
E C Salido, and
T Mohandas, and
L Shapiro
February 1990,
American journal of human genetics,
P H Yen, and
J Ellison, and
E C Salido, and
T Mohandas, and
L Shapiro
February 1995,
Human molecular genetics,
P H Yen, and
J Ellison, and
E C Salido, and
T Mohandas, and
L Shapiro
May 1987,
Science (New York, N.Y.),
P H Yen, and
J Ellison, and
E C Salido, and
T Mohandas, and
L Shapiro
June 1999,
Proceedings of the National Academy of Sciences of the United States of America,
P H Yen, and
J Ellison, and
E C Salido, and
T Mohandas, and
L Shapiro
December 1989,
Proceedings of the National Academy of Sciences of the United States of America,
P H Yen, and
J Ellison, and
E C Salido, and
T Mohandas, and
L Shapiro
July 1998,
Proceedings of the National Academy of Sciences of the United States of America,
P H Yen, and
J Ellison, and
E C Salido, and
T Mohandas, and
L Shapiro
August 1991,
American journal of human genetics,
P H Yen, and
J Ellison, and
E C Salido, and
T Mohandas, and
L Shapiro
May 1990,
Genomics,
P H Yen, and
J Ellison, and
E C Salido, and
T Mohandas, and
L Shapiro
October 1993,
Human molecular genetics,
P H Yen, and
J Ellison, and
E C Salido, and
T Mohandas, and
L Shapiro
January 2018,
Science immunology,
