Nucleotide sequences required for the regulation of a rat alpha 2u-globulin gene by glucocorticoids.
AUTOR(ES)
Addison, W R
RESUMO
alpha 2u-Globulin is a rat protein of as yet unknown function whose synthesis can be induced by glucocorticoids and several other hormones. Induction by glucocorticoids is a secondary response to the hormone: protein synthesis is required before the hormone can exert its stimulatory effect on alpha 2u-globulin transcription. We have used the linker-scanning mutagenesis procedure, followed by transfer of the mutant genes into mouse L-cells for analysis of their phenotype, to determine sequences within a cloned alpha 2u-globulin promoter that are required for its regulation by glucocorticoids. Mutations between positions -115 and -160 abolish or greatly reduce the inducibility of alpha 2u-globulin by the hormone. Mutations just upstream from this region, between positions -177 and -220, have an opposite effect; they increase induction two- to fourfold.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=367786Documentos Relacionados
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