The development of fatal transmissible spongiform encephalopathies (TSE) is associated with the conformational conversion of the normal cellular prion protein, PrPC, into its pathogenic isoform, PrPSc.

Rajasekaran R

Department of Biotechnology

School of Bio Sciences and Technology

Vellore Campus

Chandrasekaran P

Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

Molecular BioSystems

Journal of Cellular Biochemistry

Deciphering the Molecular Effects of Mutations on ATRX Cause ATRX Syndrome: A Molecular Dynamics Study

Detailed computational analysis revealed mutation V210I on PrP induced conformational conversion on β2–α2 loop and α2–α3

X-linked lymphoproliferative (XLP) syndrome is an extremely rare inherited immunodeficiency disease characterized by severe immune dysregulation caused by mutations in signaling lymphocyte activation molecule (SLAM) associated protein (SAP) gene. The XLP syndrome was manifested due to dysfunction of SAP as a result of amino acid substitution. Hence, to understand the molecular aspects of the XLP syndrome, we structurally characterized two observed mutations, R32Q and T53I on SAP through the systematic molecular dynamics (MD) approach. Our MD analysis showed that mutant structures elucidated an atomic level variation influenced by mutations that substantially altered the residual flexibility and more importantly the hot spot residues as well in unbound and bound systems. In addition, change in residual flexibility of mutant structures showed an unusual conformational behavior associated with their molecular recognition function compared to the wild-type SAP in both systems. Besides, both mutant structures established different secondary structural profiles during the course of the simulation period in both systems. Moreover, the docking analysis revealed that mutant R32Q and T53I structures displayed remarkably reduced levels of binding affinity to the unphosphorylated SLAM peptide with respect to their docking scores. Collectively, our findings provide knowledge to understand the structural and functional relationship of disease-causing mutations, R32Q and T53I on SAP as well as gain further insights into the molecular pathogenesis of the XLP syndrome. This journal is © the Partner Organisations 2014.

Structural characterization of disease-causing mutations on SAP and the functional impact on the SLAM peptide: a molecular dynamics approach

Case Medical Research

Orphan designation: Tyr-Met-Phe-Pro-Asn-Ala-Pro-Tyr-Leu, Ser-Gly-Gln-Ala-Tyr-Met-Phe-Pro-Asn-Ala-Pro-Tyr-Leu-Pro-Ser-Cys-Leu-Glu-Ser, Arg-Ser-Asp-Glu-Leu-Val-Arg-His-His-Asn-Met-His-Gln-Arg-Asn-Met-Thr-Lys-Leu and Pro-Gly-Cys-Asn-Lys-Arg-Tyr-Phe-Lys-Leu-Ser-His-Leu-Gln-Met-His-Ser-Arg-Lys-His-Thr-Gly, Treatment of acute myeloid leukaemia

Orphan designation: Ile-Ser-Ile-Thr-Glu-Ile-Lys-Gly-Val-Ile-Val-His-Arg-Ile-Glu-Thr-Ile-Leu-Phe-Lys-Lys-Lys-Lys-Glu-Met-Pro-Ser-Glu-Glu-Gly-Tyr-Gln-Asp, Treatment of multiple system atrophy

Physical Chemistry Chemical Physics

Peptides in the presence of aqueous ionic liquids: tunable co-solutes as denaturants or protectants?

Journal	Data powered by TypesetMolecular BioSystems
Publisher	Data powered by TypesetRoyal Society of Chemistry (RSC)
ISSN	1742-206X
Open Access	No