Cadmium-sulfide crystallites in Cd-(. gamma. EC) sub n G peptide complexes from tomato. [Lycopersicon esculentum]

Journal Article · Wed Jan 01 00:00:00 EST 1992 · Plant Physiology; (United States)

DOI:https://doi.org/10.1104/pp.98.1.225· OSTI ID:7114366

Reese, R N; White, C A; Winge, D R ^[1]

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1. South Dakota State Univ., Brookings (United States) Univ. of Utah, Salt Lake City (United States)

Hydroponically grown tomato plants (Lycopersicon esculentum P. Mill cv Golden Boy) exposed to 100 micromolar cadmium sulfate produced metal-({gamma}EC){sub n}G peptide complexes containing acid-labile sulfur. The properties of the complexes resemble those of the cadmium-({gamma}EC){sub n}G peptide complexes from Schizo-saccharomyces 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){sub n}-Gly. The cadmium-peptide complexes of tomato contained predominantly peptides of n{sub 3}, n{sub 4}, and n{sub 5}. Spectroscopic analyses indicated that the tomato cadmium-sulfide-peptide complex contained CdS crystallite core particles smaller than 2.0 nanometers in diameter.

• OSTI ID: 7114366
• Journal Information: Plant Physiology; (United States), Vol. 98:1; ISSN 0032-0889
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
CADMIUM SULFATES
TOXICITY
METALLOPROTEINS
BIOSYNTHESIS
TOMATOES
PHYSIOLOGY
CADMIUM SULFIDES
CRYSTAL GROWTH
DETOXIFICATION
PROTEIN STRUCTURE
SPECTROSCOPY
CADMIUM COMPOUNDS
CHALCOGENIDES
FOOD
FRUITS
INORGANIC PHOSPHORS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PHOSPHORS
PROTEINS
SULFATES
SULFIDES
SULFUR COMPOUNDS
SYNTHESIS
560300* - Chemicals Metabolism & Toxicology