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Novel TK2 mutations as a cause of delayed muscle maturation in mtDNA depletion syndrome
Thanes Termglinchan1, Seito Hisamatsu1, Junko Ohmori1
1Department of Neuromuscular Research (T.T., N. Minami, I.A., S.N., I. Nonaka, S.M., I. Nishino), National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo; Department of Pediatrics (S.H., H.S., G.I., O.A.), Dokkyo Medical University School of Medicine, Tochigi; Department of Mental Retardation and Birth Defect Research (J.O., Y.G.), Division of Genetic Diagnosis (N. Minami), Department of Laboratory Medicine, National Center Hospital, NCNP, Tokyo; Department of Child Neurology (N.S., I.A., M.S.), National Center Hospital, National Center of Neurology and Psychiatry, Tokyo; Department of Pediatrics (N. Murakami), Dokkyo Medical University Koshigaya Hospital, Saitama; and Department of Genome Medicine Development (N. Minami, S.M., I. Nishino), Medical Genome Center, National Center of Neurology and Psychiatry, Tokyo, Japan.
Abstract:
Recessive mutations in TK2 cause a severe mitochondrial DNA depletion syndrome (MDS),(1) characterized by severe myopathy from early infancy. Recent reports have suggested a wider clinical spectrum including encephalomyopathic form.(1,2) We report a patient with infantile-onset fatal encephalomyopathy presenting with extreme muscle fiber immaturity.
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Translation
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of...
Translation
Translation Produces the Building Blocks of Life
Proteins are...