An investigation of the homology of guanylate kinase isozymes in mammals and further evidence for multiple GUK gene loci |
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Authors: | Talat Jamil Rachel A Fisher |
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Institution: | 1. MRC Human Biochemical Genetics Unit, The Galton Laboratory, University College London, England
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Abstract: | Guanylate kinase in the red cells of 63 different mammalian species was studied by electrophoresis and multiple molecular forms of the enzyme were found in all species. Two species were investigated in more detail. Using molecular weight estimates as a criterion of homology, the fallow deer and the Chinese hamster were found to have isozymes that corresponded to isozyme e, f, and g of man. Variation in the guanylate kinase isozymes was detected in a small population of orangutans. Results suggested that isozymes a and b were monomeric and that they were the products of a gene locus, GUK1, different from the locus GUK3 which coded for isozymes e, f, and g. Products c and d of the presumptive GUK2 locus were not found in the orangutan. |
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