Abstract：
:A cobalt-resistant wall-less mutant of N. crassa (Cor-sl) characterized previously was also found to be 3-fold more resistant to nickel when compared to the parent wall-less mutant (W-sl). The Cor-sl strain accumulates relatively lower amounts of nickel when compared to W-sl. Sub-cellular fractionation showed significant quantities of nickel to be associated with nuclear and mitochondrial fractions in both the wall-less mutants. However significant differences were observed in vacuolar fractions of W-sl and Cor-sl strains. Fractionation of cell-free extracts on Sephadex G-10 column resolved nickel into two peaks, of which the peak II in Cor-sl constituted 70% of nickel, while the same in W-sl was about 30%. A 3-fold increase in histidine content was observed in case of Cor-sl as compared to W-sl strain, suggesting its role in Ni-resistance.
journal_name
Indian J Exp Bioljournal_title
Indian journal of experimental biologyauthors
Rajyalaxmi RS,Sowjanya TN,Kiranmayi P,Mohan MPkeywords:
subject
Has Abstractpub_date
2004-11-01 00:00:00pages
1117-22issue
11eissn
0019-5189issn
0975-1009journal_volume
42pub_type
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