Heme-mediated transcriptional control in Kluyveromyces lactis

被引:28
作者
González-Domínguez, M
Freire-Picos, MA
Ramil, E
Guiard, B
Cerdán, ME
机构
[1] Univ A Coruna, F Ciencias, Dept Biol Celular & Mol, La Coruna 15071, Spain
[2] Univ Paris 06, Ctr Genet Mol, CNRS, F-91198 Gif Sur Yvette, France
关键词
oxygen; heme; transcriptional regulation; Kluyveromyces lactis;
D O I
10.1007/s002940000146
中图分类号
Q3 [遗传学];
学科分类号
071007 ; 090102 ;
摘要
Heme is of great importance in oxygen-dependent biological functions, since it serves as a prosthetic group for many proteins related to oxygen-binding, oxidative damage prevention and electron transport. It also regulates gene expression through the action of specific transcriptional regulatory factors. In this paper, we present an analysis of heme-dependent transcriptional regulation of several respiration-related genes in an aerobic respiratory yeast, Kluyveromyces,ces lactis. We also report that the KlHEM13 gene, encoding the heme biosynthetic enzyme coproporphyrinogen oxidase, is under heme and oxygen transcriptional regulation, thereby controlling the synthesis of the effector, heme. KlHEM13 is induced during hypoxia, which represents the first report of a transcriptionally regulated gene with this behaviour in K. lactis.
引用
收藏
页码:171 / 177
页数:7
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