Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
1993-11-29
pubmed:abstractText
A major outer membrane protein (CopB) of Moraxella catarrhalis is a target for antibodies that enhance clearance of this organism from the lungs of mice. A mini-Tn10kan transposon was inserted into the cloned copB gene from M. catarrhalis O35E, and an isogenic mutant unable to express the CopB protein was constructed by transforming this mutated gene into the wild-type strain. The mutant grew at the same rate as the wild-type parent strain in broth. Unlike the serum-resistant parent strain, this mutant was sensitive to killing by normal human serum, and its ability to survive and grow in the lungs of animals was impaired. Genetic restoration of CopB protein expression resulted in the simultaneous acquisition of wild-type levels of serum resistance and the ability to resist pulmonary clearance in vivo. Thus, the CopB protein of M. catarrhalis may be important in the interaction between this organism and the defense mechanisms of the respiratory tract.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0022-1899
pubmed:author
pubmed:issnType
Print
pubmed:volume
168
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1194-201
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
1993
pubmed:articleTitle
A mutation affecting expression of a major outer membrane protein of Moraxella catarrhalis alters serum resistance and survival in vivo.
pubmed:affiliation
Dept. of Microbiology, University of Texas Southwestern Medical Center, Dallas 75235-9048.
pubmed:publicationType
Journal Article