Linked Life Data

15866214

Source:http://linkedlifedata.com/resource/pubmed/id/15866214

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2005-5-3
pubmed:abstractText
In the gastric microenvironment, Helicobacter pylori is exposed to bicarbonate, urea and acid. Here it is demonstrated that both H. pylori carbonic anhydrases (CAs) are required for maintaining urease activity and therefore influence H. pylori urea resistance at neutral pH. Furthermore, the beta-CA is required for acid resistance as indicated by a growth defect of the corresponding mutant at low pH. The alpha- and beta-CA mutants as well as the double mutant were more resistant to bicarbonate, indicating that both enzymes are involved in bicarbonate metabolism. These phenotypes support important CA-functions in H. pylori urea and bicarbonate metabolism and acid resistance. Thus, both CA enzymes might be required for survival in the gastric niche.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0928-8244
pubmed:author
pubmed:issnType
Print
pubmed:day
1
pubmed:volume
44
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
183-9
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Mutational analysis of the Helicobacter pylori carbonic anhydrases.
pubmed:affiliation
Institute of Medical Microbiology and Hygiene, Department of Microbiology and Hygiene, University Hospital Freiburg, Hermann-Herder-Strasse 11, D-79104 Freiburg, Germany. frank.staehler@uniklinik-freiburg.de
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't