Linkage relationship between the genes for adenosine deaminase and S-adenosyl-homocysteine hydrolase on human chromosome 20. 1987

S Bissbort, and H W Hitzeroth, and C T van den Berg, and T F Wienker
Department of Chemical Pathology, University of Pretoria, South Africa.

The genes for adenosine deaminase (ADA) and S-adenosyl homocysteine hydrolase (AHCY or SAHH) are known to be syntenic and within measurable distance from each other, on chromosome 20 in man. In the present study an informative family is described in which the recombination fraction (theta) between the respective genes is estimated to be about 0.18. Together with the published finding of theta = 0.15 (Eiberg and Mohr 1985) in informative Danish families, the recombination fraction for the pooled data is calculated to be theta = 0.14 (in men), theta = 0.08 (in women) and theta = 0.13 (both sexes taken together).

UI MeSH Term Description Entries
D008040 Genetic Linkage The co-inheritance of two or more non-allelic GENES due to their being located more or less closely on the same CHROMOSOME. Genetic Linkage Analysis,Linkage, Genetic,Analyses, Genetic Linkage,Analysis, Genetic Linkage,Genetic Linkage Analyses,Linkage Analyses, Genetic,Linkage Analysis, Genetic
D008297 Male Males
D009700 Nucleoside Deaminases Catalyze the hydrolysis of nucleosides with the elimination of ammonia. Deaminases, Nucleoside
D002874 Chromosome Mapping Any method used for determining the location of and relative distances between genes on a chromosome. Gene Mapping,Linkage Mapping,Genome Mapping,Chromosome Mappings,Gene Mappings,Genome Mappings,Linkage Mappings,Mapping, Chromosome,Mapping, Gene,Mapping, Genome,Mapping, Linkage,Mappings, Chromosome,Mappings, Gene,Mappings, Genome,Mappings, Linkage
D002890 Chromosomes, Human, Pair 20 A specific pair of GROUP F CHROMOSOMES of the human chromosome classification. Chromosome 20
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D006867 Hydrolases Any member of the class of enzymes that catalyze the cleavage of the substrate and the addition of water to the resulting molecules, e.g., ESTERASES, glycosidases (GLYCOSIDE HYDROLASES), lipases, NUCLEOTIDASES, peptidases (PEPTIDE HYDROLASES), and phosphatases (PHOSPHORIC MONOESTER HYDROLASES). EC 3. Hydrolase
D000243 Adenosine Deaminase An enzyme that catalyzes the hydrolysis of ADENOSINE to INOSINE with the elimination of AMMONIA. Adenosine Aminohydrolase,Aminohydrolase, Adenosine,Deaminase, Adenosine
D043383 Adenosylhomocysteinase An enzyme which catalyzes the catabolism of S-ADENOSYLHOMOCYSTEINE to ADENOSINE and HOMOCYSTEINE. It may play a role in regulating the concentration of intracellular adenosylhomocysteine. S-adenosylhomocysteine Hydrolase,S-adenosylhomocysteine Synthase,SAH Hydrolase,Hydrolase, S-adenosylhomocysteine,S adenosylhomocysteine Hydrolase,S adenosylhomocysteine Synthase

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