Klebsiella pneumoniae enolase-like membrane protein interacts with human plasminogen.
Int J Med Microbiol
; 311(6): 151518, 2021 Aug.
Article
in English
| MEDLINE | ID: covidwho-1292744
ABSTRACT
Many models assessing the risk of sepsis utilize the knowledge of the constituents of the plasminogen system, as it is proven that some species of bacteria can activate plasminogen, as a result of interactions with bacterial outer membrane proteins. However, much is yet to be discovered about this interaction since there is little information regarding some bacterial species. This study is aimed to check if Klebsiella pneumoniae, one of the major factors of nosocomial pneumonia and a factor for severe sepsis, has the ability to bind to human plasminogen. The strain used in this study, PCM 2713, acted as a typical representative of the species. With use of various methods, including electron microscopy, 2-dimensional electrophoresis, immunoblotting and peptide fragmentation fingerprinting, it is shown that Klebsiella pneumoniae binds to human plasminogen, among others, due to plasminogen-bacterial enolase-like protein interaction, occurring on the outer membrane of the bacterium. Moreover, the study reveals, that other proteins, such as phosphoglucomutase, and phosphoenolpyruvate carboxykinase act as putative plasminogen-binding factors. These information may virtually act as a foundation for future studies investigating the pathogenicity of Klebsiella pneumoniae and means for prevention from the outcomes of Klebsiella-derived sepsis.
Keywords
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
Plasminogen
/
Klebsiella pneumoniae
Type of study:
Prognostic study
Limits:
Humans
Language:
English
Journal:
Int J Med Microbiol
Journal subject:
Microbiology
Year:
2021
Document Type:
Article
Affiliation country:
J.ijmm.2021.151518
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