Abstract
Like the nitrate transport system, the nitrite uptake system in Neurospora crassa is induced by either nitrate or nitrite. This induction is prevented by cycloheximide, puromycin, or 6-methyl purine. The K(m) for nitrite of the induced nitrite uptake system is 86 muM, and the V(max) is 100 mumol of nitrite per g (wet weight) per h. Nitrite uptake is inhibited by metabolic poisons such as arsenate, dinitrophenol, cyanide, and antimycin A. No repression or inhibition of the nitrite transport system by ammonia, nitrate, or Casamino Acids was observed.
MeSH Terms
Amino Acids/metabolism
Ammonia/metabolism
Antimycin A/pharmacology
Arsenic/pharmacology
Biological Transport, Active
Cell-Free System
Culture Media
Cyanides/pharmacology
Cycloheximide/pharmacology
Dactinomycin/pharmacology
Dinitrophenols/pharmacology
Enzyme Induction
Enzyme Repression
Neurospora/metabolism
Neurospora crassa/enzymology,metabolism
Nitrate Reductases/metabolism
Nitrates/metabolism
Nitrite Reductases/metabolism
Nitrites/metabolism
Purines/pharmacology
Puromycin/pharmacology
Chemicals
Amino Acids
Culture Media
Cyanides
Dinitrophenols
Nitrates
Nitrites
Purines
Dactinomycin
Puromycin
Antimycin A
Ammonia
Cycloheximide
Nitrate Reductases
Nitrite Reductases
Arsenic
Authors & Affiliations
2 authors, click to expand affiliations / ORCID
Schloemer R H
Garrett R H
References (10)
10 references, click to expand
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