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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
1995-12-7
pubmed:abstractText
Streptococcus bovis is commonly present in the rumen, but strains of S. bovis have also occasionally been isolated from human blood or fecal samples. Studies were undertaken with 16s rRNA gene sequences and DNA hybridizations to define the genetic relationships between these two groups of strains. Ruminal strains were found to yield genomic DNA restriction endonuclease digest patterns different from human strains when either the 16s rRNA gene amplified from ruminal S. bovis strain JB1 or a conserved universal 23s rRNA fragment was used as probes. A DNA probe based on the V1 region of the 16s rRNA of S. bovis JB1 was found to hybridize to DNAs of other ruminal S. bovis strains (K27FF4, 21-09-6C, five new ruminal isolates, and weak hybridization was found with DNAs from S. bovis 33317 (type strain), S. equinus 9812, and six other ruminal isolates. No hybridization occurred with strains representing different major human biotypes/homology groups (43143, 43144, 27960, V1387). All ruminal S. bovis strains had a guanosine plus cytosine DNA content of 37.4-38.8 mol% and, based on DNA-DNA genomic hybridizations, could be separated into two homology groups, one of which included S. equinus 9812 and S. bovis 33317. Both ruminal groups had less than 38% DNA homology to the human strains, indicating ruminal strains are clearly two separate species distinct from the human strains.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
B
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0343-8651
pubmed:author
pubmed:issnType
Print
pubmed:volume
31
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
294-300
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
1995
pubmed:articleTitle
Differentiation of ruminal and human Streptococcus bovis strains by DNA homology and 16s rRNA probes.
pubmed:affiliation
Department of Biology, Central Michigan University, Mt. Pleasant 48859, USA.
pubmed:publicationType
Journal Article