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Mutations in the FTSJ1 gene coding for a novel S-adenosylmethionine-binding protein cause nonsyndromic X-linked mental retardation

MPS-Authors

Freude,  Kristine
Max Planck Society;

Hoffmann,  Kirsten
Max Planck Society;

/persons/resource/persons50364

Jensen,  Lars-Riff
Dept. of Computational Molecular Biology (Head: Martin Vingron), Max Planck Institute for Molecular Genetics, Max Planck Society;

Moser,  Bettina
Max Planck Society;

Lenzner,  Steffen
Max Planck Society;

/persons/resource/persons50369

Kalscheuer,  Vera M.
Chromosome Rearrangements and Disease (Vera Kalscheuer), Dept. of Human Molecular Genetics (Head: Hans-Hilger Ropers), Max Planck Institute for Molecular Genetics, Max Planck Society;

/persons/resource/persons50501

Ropers,  Hans-Hilger
Dept. of Human Molecular Genetics (Head: Hans-Hilger Ropers), Max Planck Institute for Molecular Genetics, Max Planck Society;

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Citation

Freude, K., Hoffmann, K., Jensen, L.-R., Delatycki, M. B., des Portes, V., Moser, B., et al. (2004). Mutations in the FTSJ1 gene coding for a novel S-adenosylmethionine-binding protein cause nonsyndromic X-linked mental retardation. American Journal of Human Genetics, 75(2), 305-309.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0010-8847-2
Abstract
Nonsyndromic X-linked mental retardation (NSXLMR) is a very heterogeneous condition, and most of the underlying gene defects are still unknown. Recently, we have shown that ∼30% of these genes cluster on the proximal Xp, which prompted us to perform systematic mutation screening in brain-expressed genes from this region. Here, we report on a novel NSXLMR gene, FTSJ1, which harbors mutations in three unrelated families—one with a splicing defect, one with a nonsense mutation, and one with a deletion of one nucleotide. In two families, subsequent expression studies showed complete absence or significant reduction of mutant FTSJ1 transcripts. FTSJ1 protein is a homolog of Escherichia coli RNA methyltransferase FtsJ/RrmJ and may play a role in the regulation of translation. Further studies aim to elucidate the function of human FTSJ1 and its role during brain development.