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

Helicobacter hepaticus colonizes the murine intestine and has been associated with hepatic inflammation and neoplasia in susceptible mouse strains. In this study, the catalase of an enterohepatic Helicobacter was characterized for the first time. H. hepaticus catalase is a highly conserved enzyme that may be important for bacterial survival in the mammalian intestine. Recombinant H. hepaticus catalase was expressed in Escherichia coli in order to verify its enzymic activity in vitro. H. hepaticus catalase comprises 478 amino acids with a highly conserved haem-ligand domain. Three conserved motifs (R-F-Y-D, RERIPER and VVHAKG) in the haem-ligand domain and three surface-predicted motifs were identified in H. hepaticus catalase and are shared among bacterial and mammalian catalases. H. hepaticus catalase is present in the cytoplasmic and periplasmic compartments. Mice infected with H. hepaticus demonstrated immune responses to murine and H. hepaticus catalase, suggesting that Helicobacter catalase contains conserved structural motifs and may contribute to autoimmune responses. Antibodies to H. hepaticus catalase recognized murine hepatocyte catalase in hepatic tissue from infected mice. Antibodies from sera of H. hepaticus-infected mice reacted with peptides comprising two conserved surface-predicted motifs in H. hepaticus catalase. Catalases are highly conserved enzymes in bacteria and mammals that may contribute to autoimmune responses in animals infected with catalase-producing pathogens.

Helicobacter hepaticus catalase shares surface-predicted epitopes with mammalian catalases