title: The human gene for beta glucuronidase is on chromosome 7.
abstract: Inconsistent assignments of the human gene for beta glucuronidase (GUS) to chromosomes 7 and 9 have previously been reported. In this study, we have correlated the expression of human GUS in 22 primary Chinese hamster/human hybrid lines with quantitative cytogenetic analysis. Eight hybrids were positive for human GUS as manifested by a five-band pattern on electrophoresis. All of them contained a human chromosome 7 in 34% or more of cells, and seven of them had not retained chromosome 9. One hybrid with only 6% of metaphases possessing a chromosome 7 had no detectable human GUS activity. Human GUS expression was absent in 10 hybrid clones containing chromosome 9 but not 7 and in control fibroblasts from a patient with GUS deficiency. These results support the assignment of presumably the structural gene for beta glucuronidase to chromosome 7.
mesh_terms: D000818:Animals; D002874:Chromosome Mapping; D002906:Chromosomes, Human, 6-12 and X; D006224:Cricetinae; D004588:Electrophoresis, Cellulose Acetate; D005796:Genes; D005966:Glucuronidase / Q000378:metabolism*; D006801:Humans; D006822:Hybrid Cells; D007621:Karyotyping
chemical_list: D005966:Glucuronidase