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Rutash Kumar1, Ankush Bansal2, Rohit Shukla2

  • 1a Department of Computational Biology & Bioinformatics , Jacob Institute of Biotechnology & Bio-Engineering, Sam Higginbottom University of Agriculture, Technology and Sciences (SHUATS) , Allahabad , India.

Journal of Biomolecular Structure & Dynamics
|September 12, 2018
PubMed
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The study identifies the S145F mutation in the SLC24A5 gene as a key factor in oculocutaneous albinism type 6 (OCA6). Computational analysis reveals this mutation alters protein structure and function, potentially causing albinism.

Area of Science:

  • Genetics and Molecular Biology
  • Biochemistry
  • Computational Biology

Background:

  • Solute carrier family 24 member 5 (SLC24A5) is implicated in oculocutaneous albinism type 6 (OCA6), affecting pigmentation.
  • SLC24A5 plays a crucial role in melanosome maturation and melanin synthesis.
  • The gene is located at chromosomal position 15q21.1.

Purpose of the Study:

  • To computationally investigate mutations in the SLC24A5 gene associated with OCA6.
  • To determine the most deleterious and disease-associated mutations using bioinformatics.
  • To elucidate the structural and functional impact of mutations on SLC24A5 protein.

Main Methods:

  • Utilized bioinformatics tools to predict deleterious mutations.
  • Modeled 3D structures of native and mutant SLC24A5 using the Robetta server.
Keywords:
modellingOCAmolecular dynamics simulationmutationsnsSNPs

Related Experiment Videos

  • Validated structures with ERRAT, Verify-3D, Procheck, and Ramachandran plot analysis.
  • Performed molecular dynamics simulations (MDS) to analyze protein behavior.

    • Main Results:

    • The S145F mutation was identified as the most deleterious and disease-associated.
    • 3D modeling and validation confirmed structural integrity.
    • MDS revealed increased rigidity in the mutant SLC24A5 structure compared to the native form.
    • Mutation-induced rigidity may disrupt conformational changes and glycosylation, contributing to OCA6.

    Conclusions:

    • The S145F mutation in SLC24A5 is a significant molecular mechanism underlying OCA6.
    • Altered protein structure and function due to mutation are linked to albinism.
    • Findings offer insights for developing targeted drug therapies for OCA6.