Isolation, Characterization and Structural Organization of the Gene and Pseudogene for the Dihydrolipoamide Succinyltransferase Component of the Human 2‐Oxoglutarate Dehydrogenase Complex
Open Access
- 1 August 1994
- journal article
- Published by Wiley in European Journal of Biochemistry
- Vol. 224 (1), 179-189
- https://doi.org/10.1111/j.1432-1033.1994.tb20010.x
Abstract
In the present study, the dihydrolipoamide succinyltransferase gene of the 2-oxoglutarate dehydrogenase complex was isolated from a human genomic DNA library and its entire nucleotide sequence was determined. This gene was approximately 23 kbp in size with 15 exons and 14 introns. All of the donor and acceptor splice sites of this gene conformed to the GT/AG rule. A quanine residue 43 bases upstreams of the ATG initiating translation codon was the transcription initiation site of the human dihydrolipoamide succinyltransferase mRNA. Sequence analysis of the promoter-regulatory region showed the presence of a CAAT-box-like sequence but the presence of a TATA-box-like sequence was not evidenced. Also located in this region were sequences resembling glucocorticoid-responsive and CAMP-responsive elements, and an Sp1 binding site. No nucleotide sequence corresponding to the E3-binding and/or E1-binding domain was found in any region of the gene. Therefore, the exon coding for the E3-binding and/or E1-binding domain may have been lost from the gene during evolution. Moreover, a processed pseudogene of dihydrolipoamide succinyltransferase was isolated and sequenced. The nucleotide sequence of the pseudogene is 93% similar to the sequence of the human dihydrolipoamide succinyltransferase cDNA, but the pseudogene is not functional for base changes, deletions and insertions of the pseudogene. Southern-blot analysis showed the presence of a single copy of this gene and a single copy of a pseudogene in the human genome. In addition, a possible relationship between dihydrolipoamide succinyltransferase and familial Alzheimer's disease is discussed.Keywords
This publication has 35 references indexed in Scilit:
- An Unspliced cDNA for Human Dihydrolipoamide Succinyltransferase: Characterization and Mapping of the Gene to Chromosome 14q24.2-q24.3Biochemical and Biophysical Research Communications, 1993
- The High-resolution Structure of the Peripheral Subunit-binding Domain of Dihydrolipoamide Acetyltransferase from the Pyruvate Dehydrogenase Multienzyme Complex of Bacillus stearothermophilusJournal of Molecular Biology, 1993
- The pyruvate dehydrogenase multienzyme complexCurrent Opinion in Structural Biology, 1992
- Glutamate triggers internucleosomal DNA cleavage in neuronal cellsBiochemical and Biophysical Research Communications, 1991
- Crystal structure of an HIV-binding recombinant fragment of human CD4Nature, 1990
- Report of the committee on the genetic constitution of chromosome 14Cytogenetic and Genome Research, 1990
- The 2‐oxoglutarate dehydrogenase complex from Azotobacter vinelandiiEuropean Journal of Biochemistry, 1990
- Crystal structure of chaperone protein PapD reveals an immunoglobulin foldNature, 1989
- The organization and the complete nucleotide sequence of the human NADH-cytochrome b5 reductase geneGene, 1989
- Nucleotide sequence of the sucB gene encoding the dihydrolipoamide succinyltransferase of Escherichia coli K12 and homology with the corresponding acetyltransferaseEuropean Journal of Biochemistry, 1984