Genomic organization of the MTM1 gene implicated in X-linked myotubular myopathy.
X-linked recessive myotubular myopathy (XLMTM) is a very severe congenital muscular disease characterised by an impaired maturation of muscle fibres, and caused by defects in the MTM1 gene. This gene defines a new family of putative tyrosine phosphatases conserved through evolution. We have determined intronic flanking sequences for all the 15 exons to facilitate the detection of mutations in patients and genetic counselling. We characterised a new polymorphic marker in the immediate vicinity of the gene, which might prove useful for linkage analysis. Sequencing of the TATA-less predicted promoter provides the basis for transcriptional regulatory studies.
Institut de Génétique et de Biologie Moléculaire et Cellulaire, CNRS, Illkirch, France.
J
J
Laporte
C
C
Guiraud-Chaumeil
S M
SM
Tanner
F
F
Blondeau
L J
LJ
Hu
S
S
Vicaire
S
S
Liechti-Gallati
J L
JL
Mandel
D001483:Base Sequence; D004247:DNA; D005091:Exons; D008040:Genetic Linkage; D006801:Humans; D007438:Introns; D008969:Molecular Sequence Data; D009135:Muscular Diseases / Q000235:genetics*; D011401:Promoter Regions, Genetic; D017027:Protein Tyrosine Phosphatases / Q000235:genetics*; D054558:Protein Tyrosine Phosphatases, Non-Receptor; D014960:X Chromosome
D004247:DNA; D017027:Protein Tyrosine Phosphatases; D054558:Protein Tyrosine Phosphatases, Non-Receptor; C099588:myotubularin