Abstract:
:A patient with lactic acidosis showed a lowered pyruvate dehydrogenase E1 activity and fatigued on slight exercise. The cDNA encoding the pyruvate dehydrogenase E1 alpha-subunit from his lymphocytes, transformed by infection of Epstein-Barr virus, was cloned and sequenced. The nucleotide sequence determination revealed that the gene had a deletion of four nucleotides at the second codon upstream from the termination codon. This deletion would lead to a reading-frame shift and make a new termination codon at the 33d codon downstream from the "normal" termination codon. An S1 nuclease-protection experiment confirmed the presence of mRNA with its deletion in the patient. Amplification, by the polymerase chain reaction method, of the genomic-DNA region from his peripheral blood cells showed that the deletion was localized in an exon and that it was not caused by an abnormal splicing at the intron/exon junction. This is the first report on cloning a defective gene of the pyruvate dehydrogenase complex.
journal_name
Am J Hum Genetjournal_title
American journal of human geneticsauthors
Endo H,Hasegawa K,Narisawa K,Tada K,Kagawa Y,Ohta Ssubject
Has Abstractpub_date
1989-03-01 00:00:00pages
358-64issue
3eissn
0002-9297issn
1537-6605journal_volume
44pub_type
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