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

Cell walls ofStreptococcus salivarius HB aggregatedVeillonella alcalescens V1, but cell walls of the mutantS. salivarius HB-V5 did not. We found no correlation between the presence of fimbriae on streptococcal walls and the ability to aggregateVeillonella strains. Treatment of the walls with lysozyme solubilized a fraction which possessedVeillonella -aggregating activity. Solubilized cell wall preparations of strain HB contained three major (glyco)proteins as determined by sodium dodecyl sulfate-polyacrylamide gel electrophoresis and at least four antigens as determined by immunoelectrophoresis with antiserum prepared against strain HB walls. A specific antiserum, which was obtained by adsorption of anti-HB serum on strain HB-V5 cells, contained monospecific antibody that reacted with the solubilized strain HB wall preparation. Similar fractions prepared from strain HB-V5 cell walls did not possess aggregating activity and lacked one protein band (protein I) after sodium dodecyl sulfate-polyacrylamide gel electrophoresis and one antigen (antigen b) after immunoelectrophoresis. The same antigen was absent when lysozyme-solubilized wall preparations of strain HB were reacted with anti-HB-V5 serum. Crossed-immunoisoelectric focusing indicated that this specific (glyco)protein and this antigen were identical and had an isoelectric point of 4.60. Protein I and antigen b were specifically adsorbed when solubilized strain HB cell walls were incubated withV. alcalescens V1 but were not adsorbed by nonaggregatingVeillonella parvula ATCC 10790 cells. Culture supernatants of strain HB containedV. alcalescens V1-aggregating activity. Antigen b was present in the culture supernatant, but was not found in cultures of strain HB-V5. A total of 18S. salivarius isolates possessing the streptococcal group K antigen released aggregating activity and antigen b into the culture medium, but 11 strains which lacked the K-antigen did not.

Identification of a Streptococcus salivarius Cell Wall Component Mediating Coaggregation with Veillonella alcalescens VI