Summary
A variety of tests indicate that a small genetic region in chromosome 3R encodes at least a part of the bienzyme complex containing the last two enzymes of the pyrimidine biosynthetic pathway in Drosophila melanogaster, Complex U. Electrophoretic variants of the last pathway enzyme map to this region and both Complex U activities are proportionally reduced in flies heterozygous for specific deficeencies of the region. Complex U mutants have been isolated that lack both activities. Characteristics of these mutants are discussed relative to other pyrimidine pathway mutants known in Drosophila melanogaster and in mammals.
Similar content being viewed by others
References
Brothers, V., Tsubota, S., Germeraad, S., Fristrom, J.: The rudimentary locus of Drosophila melanogaster: partial purification of a carbamyl phosphate synthase-aspartate transcarbamylase-dihydroorotase complex. Biochem. Genet. 16, 321–332 (1978)
Brown, G., O'Sullivan, W.: Subunit structure of the orotate phosphoribosyltransferase-orotidylate decarboxylase complex from human erythrocytes. Biochemistry 16, 3235–3242 (1977)
Coleman, P., Suttle, D., Stark, G.: Purification from hamster cells of a multifunctional protein that initiates de novo synthesis of pyrimidine nucleotides. J. Biol. Chem. 252, 6379–6385 (1977)
Fortebraccio, M., Scalenghe, F., Ritossa, F.: Cytological localization of the “ebony” locus in Drosophila melanogaster. I. Drosophila Inform. Serv. 52, 102 (1977)
Giles, N.: The organization, function, and evolution of gene clusters in eucaryotes. Am. Naturalist 112, 641–657 (1978)
Handschumacher, R.: Orotidylic acid decarboxylase: inhibition studies with azauridine 5′-phosphate. J. Biol. Chem. 235, 2917–2919 (1960)
Jarry, B.: Purification of aspartate transcarbamylase from Drosophila melanogaster. Eur. J. Biochem. 87, 533–540 (1978)
Jarry, B., Falk, D.: Functional diversity within the rudimentary locus of Drosophila melanogaster. Mol. Gen. Genet. 135, 113–122 (1974)
Jones, M.: Regulation of uridylic acid biosynthesis in eukaryotic cells. Curr. Top. Cell. Regul. 6, 227–265 (1972)
Kavipurapu, P., Jones, M.: Purification, size and properties of the complex of orotate phosphoribosyltransferase-orotidylate decarboxylase from mouse Ehrlich ascites carcinoma. J. Biol. Chem. 251, 5589–5599.
Kelley, W., Smith, L.: Disorders of purine and pyrimidine metabolism. In: The Metabolic basis of inherited disease, 4th ed. (J. Stanbury, J. Wyngaarden, and D. Frederickson, eds.), pp. 1045–1071. New York: McGraw-Hill Book Co. 1978
Kent, R., Lin, R., Sallach, H., Cohen, P.: Reversible dissociation of a carbamoyl phosphate synthase-aspartate transcarbamoylase-dihydroorotase complex from ovarian eggs of Rana catesbeiana: effect of uridine triphosphate and other modifiers. Proc. Natl. Acad. Sci. U.S.A. 72, 1712–1716 (1975)
Knooth, R., Hsiao, W., Potvin, B.: Resistance of 5-fluoroorotic acid and pyrimidine auxotrophy: a new bidirectional selective system for mammalian cells. Somatic Cell Genet. 5, 551–569 (1979)
Levinson, B., Ullman, B., Martin, D.: Pyrimidine pathway variants of cultured mouse lymphoma cells with altered levels of both orotate phosphoribosyltransferase and orotidylate decarboxylase. J. Biol. Chem. 264, 4396–4401 (1979)
Lewis, E., Bacher, F.: Method of feeding ethyl methane sulfonate (EMS) to Drosophila males Drosophila Inform. Serv. 43, 193 (1968)
Lindsley, D., Grell, E.: Genetic Variations of Drosophila melanogaster. Carnegie Inst. Washington Publ. 627
Lindsley, D., Sandler, L., Baker, B., Carpenter, A., Denell, R., Hall, J., Jacobs, P., Miklos, G., Davis, B., Gethmann, R., Hardy, R., Hessler, A., Miller, S., Nozawa, H., Parry, D., Gould-Somero, M.: Segmental aneuploidy and the genetic gross structure of the Drosophila genome. Genetics 71, 157–188 (1972)
Mori, M., Tatibana, M.: Purification of homogeneous glutaminedependent carbamyl phosphate synthetase from ascites hepatoma cells as a complex with aspartate transcarbamylase and dihydroorotase. J. Biochem. 78, 239–242 (1975)
Norby, S.: The biochemical genetics of Rudimentary mutants of Drosophila melanogaster I. Aspartate carbamoyltransferase levels in complementing and non-complementing strains. Hereditas 73, 11–16 (1973)
O'Brien, S., MacIntyre, R.: Genetics and biochemistry of enzymes and specific proteins of Drosophila. In: The genetics and biology of Drosophila (M. Ashburner and T. Wright, eds.), Vol. 2a, pp. 396–551. New York: Academic Press 1978
Rawls, J.: Enzymatic synthesis of [6-14C]orotidine 5′-monophosphate and its use in the assay of orotate phosphoribosyltransferase and orotidylate decarboxylase. Analyt. Biochem. 86, 107–117 (1978)
Rawls, J.: The enzymes for de novo pyrimidine biosynthesis in Drosophila melanogaster: their localization, properties and expression during development. Comp. Biochem. Physiol. 62B, 207–216 (1979)
Rawls, J., Fristrom, J.: A complex genetic locus that controls the first three steps of pyrimidine biosynthesis in Drosophila. Nature 255, 738–740 (1975)
Rawls, J., Porter, L.: Organization of the rudimentary wing locus in Drosophila melanogaster. I. The isolation and partial characterization of mutants induced with ethylmethanesulfonate, ICR-170, and X-rays. Genetics 93, 143–161 (1979)
Rizki R., Rizki, T.: Morphogenetic effects of 6-azauracil and 6-azauridine. Science 150, 222–223 (1965)
Shoaf, T., Jones, M.: Uridylic acid synthesis in Ehrlich ascites carcinoma. Properties, subcellular distribution and nature of enzyme complexes of the six biosynthetic enzymes. Biochemistry 12, 4039–4051 (1973).
Stroman, P., Bahn, E., Norby, S., Sick, K.: 6-azauracil induced phenocopies of Rudimentary wing mutants and their suppression by a suppressor mutants of rudimentary in Drosophila melanogaster. Hereditas 73, 239–246 (1973)
Suttle, P., Stark, G.: Coordinate overproduction of orotate phosphoribosyltransferase and orotidine-5′-phosphate decarboxylase in hamster cells resistant to pyrazofurin and 6-azauridine. J. Biol. Chem. 254, 4602–4607 (1979)
Worthy, T., Grobner, W., Kelley, W., Hereditary orotic aciduria: evidence for a structural gene mutation. Proc Natl Acad Sci. U.S.A. 71, 3031–3035 (1974)
Author information
Authors and Affiliations
Additional information
Communicated by M.M. Green
Rights and permissions
About this article
Cite this article
Rawls, J.M. Identification of a small genetic region that encodes orotate phosphoribosyltransferase and orotidylate decarboxylase in Drosophila melanogaster . Molec. Gen. Genet. 178, 43–49 (1980). https://doi.org/10.1007/BF00267211
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00267211