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Organization and evolution of the flavin-containing monooxygenase genes of human and mouse

Hernandez, D.; Janmohamed, A.; Chandan, P.; Phillips, I.R.; Shephard, E.A.; (2004) Organization and evolution of the flavin-containing monooxygenase genes of human and mouse. Pharmacogenetics , 14 (2) pp. 117-130. 10.1097/00008571-200402000-00006.

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Abstract

Objectives: To date, six flavin-containing monooxygenase (FMO) genes have been identified in humans, FMOs 1, 2, 3, 4 and 6, which are located within a cluster on chromosome 1, and FMO5, which is located outside the cluster. The objectives were to review and update current knowledge of the structure and expression profiles of these genes and of their mouse counterparts and to determine, via a bioinformatics approach, whether other FMO genes are present in the human and mouse genomes. Results and conclusions: We have identified, for the first time, a mouse Fmo6 gene. In addition, we describe a novel human FMO gene cluster on chromosome 1, located 4 Mb telomeric of the original cluster. The novel cluster contains five genes, all of which exhibit characteristics of pseudogenes. We propose the names FMO 7P, 8P, 9P, 10P and 11P for these genes. We also describe a novel mouse gene cluster, located approximately 3.5 Mb distal of the original gene cluster on Chromosome 1. The novel mouse cluster contains three genes, all of which contain full-length open-reading frames and possess no obvious features characteristic of pseudogenes. One of the genes is apparently a functional orthologue of human FMO9P. We propose the names Fmo9, 12 and 13 for the novel mouse genes. Orthologues of these genes are also present in rat. Sequence comparisons and phylogenetic analyses indicate that the novel human and mouse gene clusters arose, not from duplications of the known gene cluster, but via a series of independent gene duplication events. The mammalian FMO gene family is thus more complex than previously realised.

Type:Article
Title:Organization and evolution of the flavin-containing monooxygenase genes of human and mouse
DOI:10.1097/00008571-200402000-00006
Publisher version:http://dx.doi.org/10.1097/00008571-200402000-00006
Language:English
Keywords:FMO, flavin-containing monooxygenase, gene family, pseudogene, chromosome 1, evolution, human, mouse
UCL classification:UCL > School of BEAMS > Faculty of Engineering Science > Biochemical Engineering

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