Abstract:
:NADH-rubredoxin oxidoreductase (NROR), a flavoprotein from the obligately anaerobe Clostridium acetobutylicum is encoded by an ORF (nror) of 1140 nucleotides. Whereas primary structure analysis reveals that NROR has amino acid sequence patterns homologous with those involved in FAD and NAD-binding, the enzyme is distantly related to other flavoproteins in the databank. NROR is highly active for reducing clostridial rubredoxin (Rd) especially against C. acetobutylicum Rd with an efficiency (k(cat)/K(m)) of 400,000 mM(-1)s(-1). These results suggest that Rd from C. acetobutylicum, C. pasteurianum, C. butyricum, and C. cellulolyticum can be interchanged with each other. Since C. acetobutylicum is the sole Clostridium strain that possesses such an enzyme, possible functions are discussed with regard to Desulfovibrio gigas and Pyrococcus furiosus, the only two other anaerobic systems for which a similar activity was reported, but no gene isolated.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Guedon E,Petitdemange Hdoi
10.1006/bbrc.2001.5196subject
Has Abstractpub_date
2001-07-13 00:00:00pages
496-502issue
2eissn
0006-291Xissn
1090-2104pii
S0006-291X(01)95196-4journal_volume
285pub_type
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