Substrate-Preference Polymorphism at an Esterase Locus of DROSOPHILA MOJAVENSIS
AUTOR(ES)
Zouros, E.
RESUMO
In a larval esterase of Drosophila mojavensis there are alleles whose products preferentially hydrolyze α-naphthyl esters, whereas the majority of the alleles hydrolyze preferentially β-naphthyl esters. In a collection of laboratory stocks α alleles have a frequency of 15%. Three different mobilities of α alleles were discovered, suggesting a polymorphism rather than a single mutation event. If substrate-preference polymorphisms are common among "multiple-substrate" enzymes (category II of Gillespie and Langley 1974), allozyme variation at these enzyme loci may well be maintained by balancing selection.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1201813Documentos Relacionados
- Molecular Basis of Polymorphism at the Esterase-5b Locus in Drosophila Pseudoobscura
- Polymorphism for Dimerizing Ability at the Esterase-5 Locus in DROSOPHILA PSEUDOOBSCURA
- Measurement of Fitness at the Esterase-5 Locus in DROSOPHILA PSEUDOOBSCURA
- FREQUENCY-DEPENDENT SELECTION AT THE ESTERASE 6 LOCUS IN Drosophila melanogaster*
- Polymorphism and Divergence at a Drosophila Pseudogene Locus
