CADMIUM-SULFIDE CRYSTALLITES IN CD-(GAMMA-EC)NG PEPTIDE COMPLEXES FROM TOMATO

被引：70

作者：

REESE, RN

WHITE, CA

WINGE, DR

机构：

[1] UNIV UTAH,MED CTR,DEPT MED,SALT LAKE CITY,UT 84132

[2] UNIV UTAH,MED CTR,DEPT BIOCHEM,SALT LAKE CITY,UT 84132

来源：

PLANT PHYSIOLOGY | 1992年 / 98卷 / 01期

关键词：

D O I：

10.1104/pp.98.1.225

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Hydroponically grown tomato plants (Lycopersicon esculentum P. Mill. cv Golden Boy) exposed to 100 micromolar cadmium sulfate produced metal-(gamma-EC)(n)G peptide complexes containing acid-labile sulfur. The properties of the complexes resemble those of the cadmium-(gamma-EC)(n)G peptide complexes from Schlzosaccharomyces pombe and Candida glabrata known to contain a cadmium sulfide crystallite core. The crystallite is stabilized by a sheath of peptides of general structure (gamma-Glu-Cys)(n)-Gly. The cadmium-peptide complexes of tomato contained predominantly peptides of n3, n4, and n6. Spectroscopic analyses indicated that the tomato cadmium-sulfide-peptide complex contained CdS crystallite core particles smaller than 2.0 nanometers in diameter.

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页码：225 / 229

页数：5

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