Respiratory chain activity in tissues from patients (MELAS) with a point mutation of the mitochondrial genome [tRNA<sup>Leu(UUR)</sup>]
FEBS LettersPublished 29 July 1991
B. Obermaier–Kusser, I. Paetzke-Brunner, C. Enter, Josef Müller‐Höcker, S. Zierz, W. Ruitenbeek
Citations36
SJR quartileQ1
SJR score1.22
SNIP0.77
Generate an AI Snapshot to get a quick, structured summary of this paper.
Study Snapshot
ObjectiveStudy objective
MethodsResearch methodology
PopulationPopulation studied
Sample sizeSample sizes
OutcomesStudy outcomes here
ResultsStudy results comes here
LimitationsResearch study limitations comes here
A concise AI-generated summary of the paper will appear here once you click Generate AI Snapshot.
TL;DR
A heteroplasmic point mutation at position 3243 in the mitochondrial tRNALeu(UUR) gene is indicative for myo‐encephalopathy with lactic acidosis and stroke‐like episodes (MELAS).
Abstract
A heteroplasmic point mutation (transition A to G at position 3243 in the mitochondrial tRNA(Leu(UUR)) gene is indicative for myo-encephalopathy with lactic acidosis and stroke-like episodes (MELAS). Decreased respiratory chain complex activities measured in different tissues from four patients with MELAS syndrome do not correlate with the proportion of mutated mitochondrial genome.
Keywords
Biochemistry, Genetics and Molecular Biology
ScienceMitochondrial DNA Mutation Associated with Leber's Hereditary Optic Neuropathy
2,431 Citations1988Douglas C. Wallace, Gurparkash Singh +6 more
This finding demonstrated that a nucleotide change in a mitochondrial DNA energy production gene can result in a neurological disease.
NatureA mutation in the tRNALeu(UUR) gene associated with the MELAS subgroup of mitochondrial encephalomyopathies
2,085 Citations1990Yu‐ichi Goto, Ikuya Nonaka +1 more
An A-to-G transition mutation at nucleotide pair 3,243 in the dihydrouridine loop of mitochondrial tRNALeu(UUR) that is specific to patients with MELAS is reported, which creates an Apal restriction site and could perform a simple molecular diagnostic test for the disease.
NatureDeletions of muscle mitochondrial DNA in patients with mitochondrial myopathies
1,845 Citations1988Ian Holt, A. E. Harding +1 more
Observations demonstrate that mtDNA heteroplasmy can occur in man and that human disease may be associated with defects of the mitochondrial genome.
CellMyoclonic epilepsy and ragged-red fiber disease (MERRF) is associated with a mitochondrial DNA tRNALys mutation
1,483 Citations1990John M. Shoffner, Marie T. Lott +4 more
An A to G transition mutation at nucleotide pair 8344 in human mitochondrial DNA has been identified as the cause of MERRF, providing molecular confirmation that some forms of epilepsy are the result of deficiencies in mitochondrial energy production.
NeurologyDeletions of mitochondrial DNA in Kearns‐Sayre syndrome
737 Citations1988Massimo Zeviani, Carlos T. Moraes +5 more
Large-scale deletions in muscle mitochondrial DNA (mtDN A) in seven of seven patients with Kearns-Sayre syndrome (KSS) bolster arguments that KSS is a unique disorder and genetic in origin.
Biochemical and Biophysical Research CommunicationsA point mutation in the mitochondrial tRNALeu(UUR) gene in melas (mitochondrial myopathy, encephalopathy, lactic acidosis and stroke-like episodes)
371 Citations1990Yoko Kobayashi, Mariko Y. Momoi +6 more
This work suggests that the mutation in the mitochondrial tRNALeu gene causes MELAS, a major group of heterogeneous mitochondrial disorders.
NeurologyDeletions of mitochondrial DNA in Kearns‐Sayre syndrome
369 Citations1988Massimo Zeviani, Carlos T. Moraes +5 more
Large-scale deletions in muscle mitochondrial DNA are identified in seven of seven patients with Kearns-Sayre syndrome (KSS) and bolster arguments that KSS is a unique disorder and genetic in origin.
CellTermination of transcription in human mitochondria: Identification and purification of a DNA binding protein factor that promotes termination
302 Citations1989Brigitte Kruse, Nalini Narasimhan +1 more
A DNA binding protein(s) that protects a 28 bp region immediately adjacent and downstream of the 3' ends of the in vivo and in vitro transcripts has been identified and highly purified on an oligodeoxynucleotide affinity column.
Journal of Molecular BiologyCloning of human mitochondrial DNA in Escherichia coli
181 Citations1980Jacques Drouin
A collection of recombinant clones has thus been obtained using the mtDNA isolated from a single placenta and is now being used to obtain a complete nucleotide sequence of human mtDNA.
Biochemical and Biophysical Research CommunicationsMitochondrial DNA mutations in mitochondrial myopathy, encephalopathy, lactic acidosis, and stroke-like episodes (MELAS)
86 Citations1991Masashi Tanaka, Hidekazu Ino +8 more
Results indicate that a mass of mtDNA mutations including the A-to-G transition in the tRNA(Leu) gene is a genetic cause of MELAS.
Biochemical and Biophysical Research CommunicationsMultiple populations of deleted mitochondrial DNA detected by a novel gene amplification method
61 Citations1989Wataru Sato, Masashi Tanaka +4 more
A gene amplification method for detecting small populations of deleted mitochondrial DNA was used in analysis of skeletal muscle from a patient with ocular myopathy, suggesting that the primer shift PCR method could be valuable for accurate diagnosis of ocularmyopathy associated with mtDNA deletion.
Journal of NeurologyMitochondrial myopathies: divergences of genetic deletions, biochemical defects and the clinical syndromes
58 Citations1990Klaus-Dieter Gerbitz, B. Obermaier–Kusser +4 more
Genomic Southern analysis of muscle mitochondrial DNA from 16 patients with mitochondrial myopathies was performed, finding no clear-cut correlation between the size and location of the deletions and the histo-chemical and biochemical data or the severity of the disease.
Journal of Molecular BiologyCharacterisation of complete type II insertions in cloned segments of ribosomal DNA from Drosophila melanogaster
42 Citations1980Heli Roiha, David M. Glover
The nature of the additional sequences linked to the type II sequences of cDm207 are re-examined and find them to be related to type I rDNA insertion sequences.
Biochemical and Biophysical Research CommunicationsDifferent copy numbers of apparently identically deleted mitochondrial DNA in tissues from a patient with Kearns-Sayre syndrome detected by PCR
38 Citations1990B. Obermaier–Kusser, Josef Müller‐Höcker +5 more
An apparently identical deletion of 4.977 bp in length was detectable in the mitochondrial DNA from skeletal muscle, heart muscle, kidney, and liver of a patient with Kearns-Sayre syndrome.
European NeurologyA Case of Mitochondrial Myopathy, Encephalopathy and Lactic Acidosis due to Cytochrome c Oxidase Deficiency with Neurogenic Muscular Changes
17 Citations2008Kenji Jinnai, Hiroyuki Yamada +5 more
Findings indicated lower motor neuron damage, probably due to the mitochondrial disorder, followed by reinnervation in an 18-year-old male with mitochondrial myopathy, encephalopathy and lactic acidosis.
