Abstract:
:Duchenne muscular dystrophy (DMD) is a fatal X-linked recessive disorder of muscle in children. The DMD gene product, "dystrophin", is absent from DMD, while the allelic disease, Becker muscular dystrophy (BMD), exhibits dystrophin of abnormal size and/or quantity. But we are still uncertain about the scenario that internally deleted (or duplicated) dystrophin in BMD possesses its carboxy (C)-terminal region, and severely truncated dystrophin in DMD does not. Here we use a new monoclonal antibody directed against an peptide in the C-terminal end of the dystrophin molecule to show that the C-terminus is preserved in 30 BMD and 24 control skeletal muscles but not in 21 DMD specimens. This result, taken together with data on deletions of the dystrophin gene, emphasizes both the diagnostic and biological importance of the C-terminal domain which is required for proper function and stability of dystrophin, and substantiates the validity of the reading frame hypothesis for DMD versus BMD deletions on a biochemical level.
journal_name
J Neurol Scijournal_title
Journal of the neurological sciencesauthors
Arahata K,Beggs AH,Honda H,Ito S,Ishiura S,Tsukahara T,Ishiguro T,Eguchi C,Orimo S,Arikawa Edoi
10.1016/0022-510x(91)90039-asubject
Has Abstract,Author List Incompletepub_date
1991-02-01 00:00:00pages
148-56issue
2eissn
0022-510Xissn
1878-5883pii
0022-510X(91)90039-Ajournal_volume
101pub_type
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