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Larsson, J., Zhang, J., Rasmuson-Lestander, A. (1996). Mutations in the Drosophila melanogaster gene encoding S-adenosylmethionine synthetase suppress position-effect variegation.  Genetics 143(2): 887--896.
FlyBase ID
FBrf0087538
Publication Type
Research paper
Abstract

In Drosophila melanogaster, the study of trans-acting modifier mutations of position-effect variegation and Polycomb group (Pc-G) genes have been useful tools to investigate genes involved in chromatin structure. We have cloned a modifier gene, Suppressor of zeste 5 (Su(z)5), which encodes S-adenosylmethionine synthetase, and we present here molecular results and data concerning its expression in mutants and genetic interactions. The mutant alleles Su(z)5, l(2)R23 and l(2)M6 show suppression of wm4 and also of two white mutants induced by roo element insertions in the regulatory region i.e., wis (in combination with z1) and wsp1. Two of the Su(z)5 alleles, as well as a deletion of the gene, also act as enhancers of Polycomb by increasing the size of sex combs on midleg. The results suggest that Su(z)5 is connected with regulation of chromatin structure. The enzyme S-adenosylmethionine synthetase is involved in the synthesis of S-adenosylmethionine, a methyl group donor and also, after decarboxylation, a propylamino group donor in the bio-synthesis of polyamines. Our results from HPLC analysis show that in ovaries from heterozygous Su(z)5 mutants the content of spermine is significantly reduced. Results presented here suggest that polyamines are an important molecule class in the regulation of chromatin structure.

PubMed ID
PubMed Central ID
PMC1207346 (PMC) (EuropePMC)
DOI
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Erratum

Mutations in the Drosophila melanogaster gene encoding S-adenosylmethionine synthetase suppress position-effect variegation.
Larsson et al., 1996, Genetics 144(3): 1329 [FBrf0091285]

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Secondary IDs
    Language of Publication
    English
    Additional Languages of Abstract
    Parent Publication
    Publication Type
    Journal
    Abbreviation
    Genetics
    Title
    Genetics
    Publication Year
    1916-
    ISBN/ISSN
    0016-6731
    Data From Reference