A gene family encoding glutathione peroxidase homologues in Hordeum vulgare (barley)

被引:62
作者
Churin, Y [1 ]
Schilling, S [1 ]
Börner, T [1 ]
机构
[1] Humboldt Univ, Div Genet, Inst Biol, D-10115 Berlin, Germany
关键词
glutathione peroxidase; oxidative stress; chloroplast; peroxisome; Hordeum vulgare;
D O I
10.1016/S0014-5793(99)01208-9
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
We have isolated and characterised three barley cDNAs encoding glutathione peroxidase (GPX) homologues, designated HVGPH1, HVGPH2 and HVGPH3, HVGPH1 may represent a cytosolic form of GPX, The structure of the HVGPH2 N-terminal domain is typical for a plastid transit peptide. A potential peroxisomal targeting sequence occurs near the N-terminus of HVGPH3, Transcript levels of HVGPH1 and HVGPH2 were increased in leaves undergoing stress. In contrast, HVGPH3 mRNA accumulation showed a negative response to stress. Our data indicate that the barley genome bears a small gene family encoding GPX homologues differing in their function and cellular localisation. (C) 1999 Federation of European Biochemical Societies.
引用
收藏
页码:33 / 38
页数:6
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