Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0348321 (Haemophilus)
 15,372 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

We performed hybridizations between labeled rRNAs from seven representative members of the family Pasteurellaceae and from three other taxa on the one hand and DNAs from 53 strains known or presumed to belong to the Pasteurellaceae on the other hand. The members of the Pasteurellaceae are most closely related to members of the Enterobacteriaceae, the Vibrionaceae, the Aeromonadaceae, and the genus Alteromonas. The family Pasteurellaceae is very heterogeneous. There are at least seven rRNA branches. Several organisms with the same genus name are dispersed over the entire dendrogram. The "Histophilus ovis," [Haemophilus] ducreyi, [Actinobacillus] actinomycetemcomitans, and [Haemophilus] aphrophilus rRNA branches are separate and quite remote from the three authentic genera in this family; this might justify eventual later separate generic status. DNA-rRNA hybridization with suitable, labeled rRNA probes is an excellent method to establish whether an organism belongs in the Pasteurellaceae; e.g., some strains of Bisgaard's taxa 7, 13, and 16 and of the gas-producing "SP" group certainly belong in this family, whereas three bovine lymphangitis organisms (strains NCTC 10547, NCTC 10549, and NCTC 10553), [Haemophilus] piscium ATCC 10801T (T = type strain), and [Pasteurella] piscicida ATCC 17911 belong in the Enterobacteriaceae, the Aeromonadaceae, and the Vibrionaceae, respectively.
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PMID:Inter- and intrafamilial similarities of rRNA cistrons of the Pasteurellaceae. 222 5

In a comparative study, 63 collection cultures representing 38 nomenspecies of, or assigned to, the genera Actinobacillus, Haemophilus, or Pasteurella were characterized by phenotypical features and deoxyribonucleic acid base composition. The latter was calculated from the thermal denaturation point. Biochemical reactions were tested in differential media commonly used for Enterobacteriaceae, and two test procedures were compared: (i) pure cultures with haematin and nicotine adenine dinucleotide added, where necessary, and (ii) xenocultures with an asaccharolytic Acinetobacter strain (ST 661/60). Furthermore, the respiratory quinones, and the effect of fumarate on oxygen-limited growth were considered. On the basis of these and some additional physiological and morphological criteria, a definition of the Actinobacillus-Haemophilus-Pasteurella group as a whole was established which appears to rank as a family. Several misclassified species, i.e. the so-called Actinobacillus actinoides, Haemophilus piscium, Haemophilus vaginalis, Pasteurella anatipestifer, and the organisms of the Bovine Lymphangitis group were eliminated, and the position of so-called Pasteurella piscicida was questioned. Some principles of subdivision of the group, and some of the practical identification procedures were discussed.
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PMID:[On the taxonomy of Actinobacillus, Haemophilus, and Pasteurella: DNA base composition, respiratory quinones, and biochemical reactions of representative collection cultures (author's transl)]. 742 43