<P> The DMD gene , encoding the dystrophin protein , is one of the longest human genes known , covering 2.3 megabases ( 0.08 % of the human genome ) at locus Xp21 . The primary transcript in muscle measures about 2,100 kilobases and takes 16 hours to transcribe ; the mature mRNA measures 14.0 kilobases . The 79 - exon muscle transcript codes for a protein of 3685 amino acid residues . </P>
<P> The DMD gene , encoding the dystrophin protein , is one of the longest human genes known , covering 2.3 megabases ( 0.08 % of the human genome ) at locus Xp21 . The primary transcript in muscle measures about 2,100 kilobases and takes 16 hours to transcribe ; the mature mRNA measures 14.0 kilobases . The 79 - exon muscle transcript codes for a protein of 3685 amino acid residues . </P>
the dmd mutation is found where in the human genome
the dmd mutation is found where in the human genome
at locus Xp21
at locus Xp21