Cadmium, selenium, and tellurium chelators in Aspergillus terreus.

Abstract:

:Aspergillus terreus was cultivated on Harrold's medium supplemented with 0.1% (w/v) cadmium chloride as well as on sulfur free medium amended with 0.1% (w/v) sodium selenite and potassium tellurite separately. The cell free extract of the fungus for each treatment was fractionated on a column packed with Sephadex G 75. The results demonstrated the ability of the fungus to synthesize several cadmium, selenium, and tellurium-binding proteins as well as metallothionein. The results suggested the biosynthesis of heavy metals chelators as well. The amino acids composition of a cadmium-binding metallothionein revealed the presence of high levels of both aromatic and sulfur amino acids in the hydrolysate.

journal_name

Biol Trace Elem Res

authors

Abbass IM,Razak AA

doi

10.1007/BF02990464

subject

Has Abstract

pub_date

1991-03-01 00:00:00

pages

173-9

issue

3

eissn

0163-4984

issn

1559-0720

journal_volume

28

pub_type

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