Biosynthesis and metabolism of glutathione in plants.

Biosynthesis and metabolism of glutathione in plants.
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植物中谷胱甘肽的生物合成和代谢。

DOI:
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发表时间:
2003
期刊:
Genetic engineering
影响因子:
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通讯作者:
M. Martin
M. Martin
中科院分区:
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文献类型:
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作者:
M. Martin

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谷胱甘肽(GSH)是三肽y-谷氨酰半胱氨酸-甘氨酸(图1)。到目前为止,在所有的真核生物和许多原核生物中都发现了它。在大多数情况下,它是主要的非蛋白硫醇。一些植物同时合成GSH和一种同系物,它用另一种氨基酸取代了C-甘氨酸。例子包括许多除了谷胱甘肽外还合成的豆类,具有y-谷氨酰半胱氨基-S-丙氨酸结构的高谷胱甘肽(1),合成结构为y-谷氨酰半胱氨基-丝氨酸(2)的禾本科植物中的水稻和小麦,以及合成y-谷氨酰半胱氨基-谷氨酸(3,4)的玉米。许多有氧原核生物合成谷胱甘肽或类似物,如谷胱甘肽-亚精胺(5)。相比之下,厌氧细菌通常不会合成GSH(6)。
Glutathione (GSH) is the tripeptide y-glutamyl-cysteinyl-glycine (Figure 1). It has been identified in all eukaryotic organisms thus far examined and in many prokaryotes. In most it is the major nonprotein thiol. Some plants synthesize both GSH and a homologue, which has the C-tenninal glycine replaced with another amino acid. Examples include many legumes that synthesize in addition to GSH, homoglutathione with the structure y-glutamyl-cysteinyl-s-alanine (1), rice and wheat in the family Poaceae that synthesize a tripeptide with the structure yglutamyl-cysteinyl-serine (2), and maize that synthesizes y-glutamyl-cysteinyl-glutamate (3,4). Many aerobic prokaryotes synthesize GSH or a homologue such as glutathionyl-spermidine (5). By contrast, anaerobic bacteria generally do not synthesize GSH (6).
DOI: 10.1073/pnas.94.1.42
发表时间: 1997-01-07
影响因子: 11.1
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