Computational insight in the identification of nonsynonymous single
nucleotide polymorphism affecting the structure and function of
Interleukin-4
Abstract
Abstract Background IL4 is a versatile cytokine essentially known for
differentiation, proliferation, and cell death in cells. Its
dysregulation has been found to be associated with the development of
inflammatory disorders. Objective The goal of the current investigation
is to identify and select non-synonymous single nucleotide polymorphisms
(nsSNPs) in the IL-4 gene by employing computational methods which may
have a potential functional impact on the occurrence of disease. Method
& Result Six different nsSNPs were predicted to be deleterious based on
the consensus of different algorithms: SIFT, Polyphen2 (Humdiv and
HumVar), PredictSNP, and SNP&GO.I-mutant and MuPro assessment revealed
a decrease in the stability of these mutants except K150M. Modelling was
then carried out to build the wild-type along with its mutants, followed
by superimposition of the wild-type with mutants to evaluate the RMSD
value, which lies between 0.26-0.34. Simulation results of mutant
models, along with wild-type, showed that four of the mutants (N113Y,
A118G, R109W, and K150M) deviated most and were unstable. A118G showed a
significant deviation from the wild-type, while V53A and C123R were
stable. Conclusion The finding establishes the evidence that the
identified six nsSNPs of IL-4 can be the new entrant presenting their
candidature for genetic testing.