PMID- 33402819 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210111 IS - 1177-9322 (Print) IS - 1177-9322 (Electronic) IS - 1177-9322 (Linking) VI - 14 DP - 2020 TI - Molecular Dynamics Simulation of T10609C and C10676G Mutations of Mitochondrial ND4L Gene Associated With Proton Translocation in Type 2 Diabetes Mellitus and Cataract Patients. PG - 1177932220978672 LID - 10.1177/1177932220978672 [doi] LID - 1177932220978672 AB - The mutation rate of mitochondrial DNA (mtDNA) is 17 times higher than nuclear DNA, and these mutations can cause mitochondrial disease in 1 of 10.000 people. The T10609C mutation was identified in type 2 diabetes mellitus (T2DM) patients and the C10676G mutation in cataract patients, with both mutations occurring in the ND4L gene of mtDNA that encodes ND4L protein. ND4L protein, a subunit of complex I in the respiratory complex, has been shown to play a role in the proton translocation process. The purpose of this study was to investigate the effect of both mutations on the proton translocation mechanism. Mutation mapping showed changes in amino acids M47T (T10609C) and C69W (C10676G). The 100 ns molecular dynamics (MD) simulations performed on native and mutants of ND4L-ND6 subunits. It is revealed that the native model had a similar proton translocation pathway to that of complex I from other organisms. Interestingly, the mutant M47T and C69W showed the interruption of the translocation pathway by a hydrogen bond formation between Glu34 and Tyr157. It is observed that the mutations were restricting the passage of water molecules through the transmembrane region. These results could help to develop the computational assay for the validation of a specific genetic biomarker for T2DM and cataracts. CI - (c) The Author(s) 2020. FAU - Destiarani, Wanda AU - Destiarani W AUID- ORCID: 0000-0003-1627-1553 AD - Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Sumedang, Indonesia. FAU - Mulyani, Rahmaniar AU - Mulyani R AD - Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Sumedang, Indonesia. FAU - Yusuf, Muhammad AU - Yusuf M AD - Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Sumedang, Indonesia. AD - Research Center for Molecular Biotechnology and Bioinformatics, Universitas Padjadjaran, Bandung, Indonesia. FAU - Maksum, Iman Permana AU - Maksum IP AUID- ORCID: 0000-0001-8166-8421 AD - Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Sumedang, Indonesia. LA - eng PT - Journal Article DEP - 20201216 PL - United States TA - Bioinform Biol Insights JT - Bioinformatics and biology insights JID - 101467187 PMC - PMC7747115 OTO - NOTNLM OT - C10676G OT - ND4L OT - T10609C OT - cataract OT - diabetes mellitus OT - proton translocation COIS- Declaration of conflicting interests:The author(s) declared no potential con fl icts of interest with respect to the research, authorship, and/or publication of this article. EDAT- 2021/01/07 06:00 MHDA- 2021/01/07 06:01 PMCR- 2020/12/16 CRDT- 2021/01/06 05:52 PHST- 2020/08/15 00:00 [received] PHST- 2020/11/14 00:00 [accepted] PHST- 2021/01/06 05:52 [entrez] PHST- 2021/01/07 06:00 [pubmed] PHST- 2021/01/07 06:01 [medline] PHST- 2020/12/16 00:00 [pmc-release] AID - 10.1177_1177932220978672 [pii] AID - 10.1177/1177932220978672 [doi] PST - epublish SO - Bioinform Biol Insights. 2020 Dec 16;14:1177932220978672. doi: 10.1177/1177932220978672. eCollection 2020.