Title : Molecular phenotype of the np 7472 deafness-associated mitochondrial mutation in osteosarcoma cell cybrids.

Pub. Date : 1999 Nov

PMID : 10545608






3 Functional Relationships(s)
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1 The nucleotide pair (np) 7472 insC mitochondrial DNA mutation in the tRNA(Ser)(UCN) gene is associated with sensorineural deafness, combined in some individuals with a wider syndrome including ataxia and myo-clonus. Serine urocortin Homo sapiens
2 The mutation results in a 65% drop in the steady-state level of tRNA(Ser)(UCN), but causes at most only a very mild and quantitative abnormality of mitochondrial protein synthesis, associated with modest hypersensitivity to doxycyclin. Serine urocortin Homo sapiens
3 Comparing the np 7472 and np 7445 mutant phenotypes in cultured cells suggests that sensorineural deafness can result from a functional insufficiency of mitochondrial tRNA(Ser)(UCN), to which some cells of the auditory system are especially vulnerable. Serine urocortin Homo sapiens