Transglucosidase activity of rumen strains of <i>Streptococcus bovis</i>. 2. Isolation and properties of dextransuerase

Bailey, R. W.

doi:10.1042/bj0720042

Cited by 34 publications

(16 citation statements)

References 12 publications

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“…Bailey & Oxford (1958) suggested that carbon dioxide may either exert a physical effect or influence the metabolism of sucrose in such a way as to promote dextran formation. Bailey (1959) suggested that carbon dioxide might be involved in the production of dextransucrase or in its secretion by the bacteria into the culture medium. The present paper reports the results of a study of the role of carbon dioxide in the growth of S. bovis.…”

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confidence: 99%

The Metabolism of Carbon Dioxide by Streptococcus bovis

Wright¹

1960

Journal of General Microbiology

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SUMMARY: Carbon dioxide stimulates the growth of Streptococcus bowis and the production of the ,extracellular enzyme dextransucrase. The growth of cultures in the presence of 14C0, resulted in the incorporation of carbon-14 into aspartic acid, with lesser amounts in threonine, glutamic acid, adenine, guanine, uridylic acid and cytidylic acid. Organisms grown with labelled aspartic acid did not utilize it to any extent; the principal source of this amino acid was from C0,-fixation reactions. The stimulation of growth by COa is considered to be due to biosynthetic reactions involving COa which lead to a sufficient supply of the intermediates required in nucleic acid and protein synthesis.

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confidence: 99%

The Metabolism of Carbon Dioxide by Streptococcus bovis

Wright¹

1960

Journal of General Microbiology

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“…7 it was concluded that the glucansucrase was constitutive in Lactobacillus strain R W M -~~ since it was present in the bacteria in the absence of its substrate, sucrose. This enzyme, therefore, resembles that of Streptococcus bovis which has been reported to be constitutive (Bailey, 1959). The reservations placed by Bailey on the constitutive nature of the S. bovis enzyme apply also in the present investigation since it was not possible to rule out the presence of minute amounts of sucrose in the components of the medium or to exclude the possibility of synthesis of trace amounts of sucrose by the bacteria sufficient to induce glucansucrase.…”

Section: Eflect Of Incubation In Glucose Broth On the Content Of Glucmentioning

confidence: 49%

“…1956) and of Streptococcus bovis (Dain, Neal & Seeley, 1956; Bailey, 1959) have been described. A number of reports have also shown that some lactobacilli produce extracellular polysaccharides which yield glucose on hydrolysis.…”

Section: Introductionmentioning

confidence: 99%

Extracellular Polysaccharide Synthesis by Members of the Genus Lactobacillus: Conditions for Formation and Accumulation

Dunican

Seeley

1965

Journal of General Microbiology

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SUMMARYMembers of the genus LactobacilZus were examined for their ability to synthesize extracellular polysaccharide from sucrose. Strains physiologically similar to L. pastorianus synthesized a glucan. Other strains liberated a complex polysaccharide which contained mannose and glucose. Variants of the glucan-producing strains occurred spontaneously and these lacked the capacity to synthesize glucan ; however, extracts of these bacilli contained glucansucrase and invertase. Manometric studies indicated that the latter enzyme functioned in the sucrose metabolism of these non-glucan producing variants.

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“…BAILEY (9) reported that dextransucrase in S. bovis may be a constitutive enzyme rather than an adaptive one, since the bacterium could produce the enzyme in the absence of sucrose. However, the dextransucrase was produced only when sucrose or glucose was present in the medium, as shown in Table 2.…”

Section: And Discussionmentioning

confidence: 99%

“…Recently, TsUMURAYA et al (8) indicated that highly purified enzyme still contained small amounts of dextran, and that dextran is not simply a contaminant, but forms a complex with the enzyme. BAILEY (9) found that Streptococcus bovis isolated from bovine rumen produced dextransucrase in both sucrose and glucose media. He also found that the saccharide content in the enzyme produced in the glucose medium is low compared to that produced in the sucrose medium.…”

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confidence: 99%