Abstract:
:Several physiological groups of bacteria were examined for the presence of a cytochrome b - like pigment which is demonstrable in dithionite-reduced minus substrate-reduced difference spectra. This pigment is characterized by an unusually high alpha band at 567 nm, a low concentration relative to conventional cytochromes, and an inability to be fully reduced by endogenous substrates or NADH. Previous studies with one denitrifying and nondenitrifying species of the genus Pseudomonas, in Paracoccus denitrificans, in Alcaligenes faecalis, in Azotobacter vinelandii, in Branhamella catarrhalis, and in Neisseria lactamicus. In all these organisms, the peak of the 567-nm pigment is accompanied by a peak of about equal height at approximately 559 nm, which exhibits similar properties to the 567-nm pigment. The 567-nm pigment was not demonstrable by this technique in Gluconobacter oxydans subspecies suboxydans, Bacillus subtilis, Bacillus licheniformis, Aeromonas hydrophilia, Escherichia coli, a Klebsiella species, Moraxella osloensis, Aquaspirillum itersonii, Micrococcus lysodeikticus, Micrococcus luteus, Agrobacterium tumefaciens, or Rhizobium meliloti.
journal_name
Can J Microbioljournal_title
Canadian journal of microbiologyauthors
Jacobs NJ,O'Hara J,Gray CTdoi
10.1139/m83-177subject
Has Abstractpub_date
1983-09-01 00:00:00pages
1154-8issue
9eissn
0008-4166issn
1480-3275journal_volume
29pub_type
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