English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Deoxyribonucleic acid-deoxyribonucleic acid reassociation and deoxyribonucleic acid-ribosomal ribonu- cleic acid cistron similarity studies showed that the anaerobic, gram-positive cocci comprise a rather heterogeneous group of bacteria. The deoxyribonucleic acid-ribosomal ribonucleic acid hybridization studies distinguished seven groups. Groups 1 and 2 consisted of Peptostreptococcus magnus and Peptostreptococcus prevotii, respectively. Peptostreptococcus asaccharolyticus ATCC 14963T (T = type strain) and Peptostreptococcus indolicus ATCC 29427T formed a third group, and Peptostreptococcus asaccharolyticus DSM 20364 together with Hare group VIII strain NCTC 9820 formed group 4. Peptostrep- tococcus anaerobius DSM 20357 was more closely related to Eubacterium tenue ATCC 25553T and Clostridium lituseburense ATCC 25759T than to any of the other species studied. Peptostreptococcus micros strains DSM 2046gT and DSM 20367 together with strains belonging to Hare group IX formed group 6, and group 7 consisted of Peptostreptococcus pawulus DSM 20469T. Strains of different Hare groups were all assigned to one of the seven groups or to the genus Staphylococcus (Hare group VIIb strain NCTC 9819) or the genus Streptococcus (Hare group VIa strain NCTC 9806). The anaerobic cocci also have a diversity of murein structures. This is the first report showing that strains belonging to the same species have different murein types. Within the last three decades it has been recognized that anaerobic, gram-positive cocci participate in a large number of infectious diseases and are frequently isolated from mixed infections (18, 20, 41, 43). Although many schemes have been proposed (5, 14,19,30,31), the current classification of anaerobic cocci is unsatisfactory, and little is known about the actual relatedness of these organisms despite many studies (3, 6, 10-12, 24, 25). In the early 1950s, Hare and colleagues (18, 39) proposed a classification scheme dividing the strains into nine groups, the so-called Hare groups, on the basis of biochemical reactions. Strains belonging to group I were believed to be potential pathogens, whereas the strains of the other groups seemed to have less pathological importance. Most of the anaerobic, gram-positive cocci can be as- signed to Peptococcus or Peptostreptococcus, which, ac- cording to Rogosa (31), are distinguished mainly by their different morphologies. Very recently, however, Ezaki et al. (12) proposed, mainly on the basis of the guanine-plus- cytosine (G+ C) contents of the deoxyribonucleic acids (DNAs), the transfer of Peptococcus indolicus, Peptococcus asaccharolyticus, Peptococcus prevotii, and Peptococcus magnus to the genus Peptostreptococcus. The aim of this study was to determine the genetic relatedness of various anaerobic, gram-positive cocci with known murein types by using nucleic acid hybridization techniques.

Nucleic Acid Hybridization Studies and Deoxyribonucleic Acid Base Compositions of Anaerobic, Gram-Positive Cocci