Characterization of the human lysyl oxidase gene locus.
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Svinarich DM, Twomey TA, Macauley SP, Krebs CJ, Yang TP, Krawetz SA
Characterization of the human lysyl oxidase gene locus.
J Biol Chem. 1992 Jul 15;267(20):14382-7.
- PubMed ID
- 1352776 [ View in PubMed]
- Abstract
Lysyl oxidase (EC 1.4.3.13) is a copper-dependent enzyme acting principally on collagen and elastin catalyzing the formation of aldehyde cross-links. It is also believed to possess a tumor suppressor activity as the anti-oncogene of ras. While rat, human, and mouse lysyl oxidase cDNAs have been cloned, little is known about the structure of the gene, its organization, or regulation. This paper describes the cloning of an intronic segment of the human lysyl oxidase gene. Sequence analysis defined the location of an intron that separates the prepro-coding segments from the segment encoding the catalytic domain. Genomic restriction mapping and gene copy number data established that multiple lysyl oxidase mRNA transcripts originate from a single gene and thus are products of alternative splicing. Northern analysis of adult and fetal fibroblast RNA showed a dominant approximately 4.3-kilobase lysyl oxidase mRNA transcript that varied in abundance as a function of cell line. These data are consistent with a complex mechanism regulating the expression of the lysyl oxidase gene.