Cloning and characterization of the human mitochondrial 3-hydroxy-3-methylglutaryl CoA synthase gene.
We report the characterization of lambda and P1 phage clones containing the entire human mitochondrial 3-hydroxy-3-methylglutaryl CoA synthase (mHS) gene. The human mHS locus (HMGCS2) on chromosome 1p12-13 spans 25 kb and contains 10 exons. Exon 1 contains most of the mitochondrial leader, consistent with a recent hypothesis of the evolution of the ketogenic pathway. By primer extension and cDNA amplification (RACE-PCR) we localized the transcription start point (tsp) to 60 bp upstream of the initiation codon. Nine blocks of conserved sequence were identified by comparing the 5' flanking regions of the mHS genes of human and rat. The 5' flanking region contains potential binding sites for TATA-binding protein, Sp1, nuclear factor 1 ( NF1), CAAT-box binding protein (C/ EBP), hepatocyte nuclear factors 1 and 5 ( HNF1, HNF5) and activator proteins 1 and 2 ( AP1, AP2).[1]References
- Cloning and characterization of the human mitochondrial 3-hydroxy-3-methylglutaryl CoA synthase gene. Boukaftane, Y., Mitchell, G.A. Gene (1997) [Pubmed]
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