PMID- 27152669 OWN - NLM STAT- MEDLINE DCOM- 20170711 LR - 20190219 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 11 IP - 5 DP - 2016 TI - A Comprehensive In Silico Analysis on the Structural and Functional Impact of SNPs in the Congenital Heart Defects Associated with NKX2-5 Gene-A Molecular Dynamic Simulation Approach. PG - e0153999 LID - 10.1371/journal.pone.0153999 [doi] LID - e0153999 AB - Congenital heart defects (CHD) presented as structural defects in the heart and blood vessels during birth contribute an important cause of childhood morbidity and mortality worldwide. Many Single nucletotide polymorphisms (SNPs) in different genes have been associated with various types of congenital heart defects. NKX 2-5 gene is one among them, which encodes a homeobox-containing transcription factor that plays a crucial role during the initial phases of heart formation and development. Mutations in this gene could cause different types of congenital heart defects, including Atrial septal defect (ASD), Atrial ventricular block (AVB), Tetralogy of fallot and ventricular septal defect. This highlights the importance of studying the impact of different SNPs found within this gene that might cause structural and functional modification of its encoded protein. In this study, we retrieved SNPs from the database (dbSNP), followed by identification of potentially deleterious Non-synonymous single nucleotide polymorphisms (nsSNPs) and prediction of their effect on proteins by computational screening using SIFT and Polyphen. Furthermore, we have carried out molecular dynamic simulation (MDS) in order to uncover the SNPs that would cause the most structural damage to the protein altering its biological function. The most important SNP that was found using our approach was rs137852685 R161P, which was predicted to cause the most damage to the structural features of the protein. Mapping nsSNPs in genes such as NKX 2-5 would provide valuable information about individuals carrying these polymorphisms, where such variations could be used as diagnostic markers. FAU - Abdul Samad, Firoz AU - Abdul Samad F AD - Center for Genetics and Inherited Diseases, Taibah University, Madinah, Kingdom of Saudi Arabia. FAU - Suliman, Bandar A AU - Suliman BA AD - Center for Genetics and Inherited Diseases, Taibah University, Madinah, Kingdom of Saudi Arabia. AD - Molecular Biomedicine Program, Research Center, King Faisal Specialist Hospital & Research Center, Riyadh, Kingdom of Saudi Arabia. FAU - Basha, Syed Hussain AU - Basha SH AD - Innovative Informatica Technologies, HIG, HUDA, Mayuri Nagar, Miyapur, Hyderabad, 500 049, India. FAU - Manivasagam, Thamilarasan AU - Manivasagam T AD - Department of Biochemistry and Biotechnology, Annamalai University, Annamalai Nagar, Tamilnadu, India. FAU - Essa, Musthafa Mohamed AU - Essa MM AUID- ORCID: 0000-0001-7505-9785 AD - Department of Food Science and Nutrition, College of Agricultural and Marine Sciences, Sultan Qaboos University, Muscat, Oman. AD - Aging and Dementia Research Group, Sultan Qaboos University, Muscat, Oman. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20160506 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (Homeobox Protein Nkx-2.5) RN - 0 (NKX2-5 protein, human) SB - IM MH - Computer Simulation MH - Heart Defects, Congenital/*genetics MH - Homeobox Protein Nkx-2.5/chemistry/*genetics MH - Humans MH - Hydrophobic and Hydrophilic Interactions MH - Molecular Dynamics Simulation MH - Mutation MH - *Polymorphism, Single Nucleotide MH - Protein Conformation PMC - PMC4859487 COIS- Competing Interests: Innovative Informatica Technologies does not alter the adherence of PLOS ONE policies on sharing data and materials. EDAT- 2016/05/07 06:00 MHDA- 2017/07/14 06:00 PMCR- 2016/05/06 CRDT- 2016/05/07 06:00 PHST- 2016/01/14 00:00 [received] PHST- 2016/03/21 00:00 [accepted] PHST- 2016/05/07 06:00 [entrez] PHST- 2016/05/07 06:00 [pubmed] PHST- 2017/07/14 06:00 [medline] PHST- 2016/05/06 00:00 [pmc-release] AID - PONE-D-16-01571 [pii] AID - 10.1371/journal.pone.0153999 [doi] PST - epublish SO - PLoS One. 2016 May 6;11(5):e0153999. doi: 10.1371/journal.pone.0153999. eCollection 2016.