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In silico mutation of aromatic with aliphatic amino acid residues in Clostridium perfringens epsilon toxin (ETX) reduces its binding efficiency to Caprine Myelin and lymphocyte (MAL) protein receptors

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Title In silico mutation of aromatic with aliphatic amino acid residues in Clostridium perfringens epsilon toxin (ETX) reduces its binding efficiency to Caprine Myelin and lymphocyte (MAL) protein receptors
Not Available
 
Creator Sunil Kumar Anurag Chaurasia , , , , and Anil Rai
Santosh Kumar Behera
Kumaresan Gururaj
Sneha Murmu
Ratna Prabha
U. B. Angadi
Rajveer Singh Pawaiya
 
Subject Epsilon toxin (ETX)
enterotoxaemia (ET)
MAL protein
protein-protein interactions
molecular dynamics
 
Description Not Available
Enterotoxaemia (ET) is a severe disease that affects domestic ruminants, including sheep and goats,
and is caused by Clostridium perfringens type B and D strains. The disease is characterized by the pro duction of Epsilon toxin (ETX), which has a significant impact on the farming industry due to its high
lethality. The binding of ETX to the host cell receptor is crucial, but still poorly understood. Therefore,
the structural features of goat Myelin and lymphocytic (MAL) protein were investigated and defined in
this study. We induced the mutations in aromatic amino acid residues of ETX and substituted them
with aliphatic residues at domains I and II. Subsequently, protein-protein interactions (PPI) were per formed between ETX (wild)-MAL and ETX (mutated)-MAL protein predicting the domain sites of ETX
structure. Further, molecular dynamics (MD) simulation studies were performed for both complexes to
investigate the dynamic behavior of the proteins. The binding efficiency between ‘ETX (wild)-MAL pro tein’ and ‘ETX (mutated)-MAL protein complex’ interactions were compared and showed that the for mer had stronger interactions and binding efficiency due to the higher stability of the complex. The
MD analysis showed destabilization and higher fluctuations in the PPI of the mutated heterodimeric
ETX-MAL complex which is otherwise essential for its functional conformation. Such kind of interac tions with mutated functional domains of ligands provided much-needed clarity in understanding the
pre-pore complex formation of epsilon toxin with the MAL protein receptor of goats. The findings
from this study would provide an impetus for designing a novel vaccine for Enterotoxaemia in goats.
ICAR
 
Date 2023-08-09T02:22:27Z
2023-08-09T02:22:27Z
2023-04-11
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/80415
 
Language English
 
Relation Not Available;
 
Publisher Taylor & Francis