PMID- 31258001 OWN - NLM STAT- MEDLINE DCOM- 20210618 LR - 20220531 IS - 1538-0254 (Electronic) IS - 0739-1102 (Linking) VI - 38 IP - 9 DP - 2020 Jun TI - Investigating the reason for loss-of-function of Src homology 2 domain-containing protein tyrosine phosphatase 2 (SHP2) caused by Y279C mutation through molecular dynamics simulation. PG - 2509-2520 LID - 10.1080/07391102.2019.1634641 [doi] AB - Noonan syndrome with multiple lentigines (NSML), formerly known as LEOPARD syndrome (LS), is an autosomal dominant inherited multisystemic disorder. Most patients involve mutation in SHP2 encoded by tyrosine-protein phosphatase non-receptor type 11 (PTPN11) gene. Studies have shown that NSML-associated Y279C mutation exhibited the reduced phosphatase activity, leading to loss-of-function (LOF) of SHP2. However, the effect of the Y279C mutation on the SHP2 at the molecular level is unclear. In this study, molecular dynamics simulations of SHP2 wild-type (SHP2(WT)) and Y279C mutant (SHP2(Y279C)) were performed to investigate the structural differences in proteins after Y279C mutation and to find out the reason for loss-of-function of SHP2. Through a series of post-dynamic analyses, it was found that the protein occupied a smaller phase space after Y279C mutation, showing reduced flexibility. Specifically, due to the mutation of Y279C, the secondary structures of these two regions (residues Lys70-Ala72 and Gly462-Arg465) were significantly transformed from Turn to alpha-helix and beta-strand. Furthermore, by calculating the residue interaction network, hydrogen bond occupancy and binding free energy, it was further revealed that the conformational differences between SHP2(WT) and SHP2(Y279C) systems were mainly caused by the differences in the interaction between Arg465-Phe469, Ile463-Gly467, Cys279-Lys70, Cys459-Ala72, Gly464-Phe71, Phe71-Ile463, Ile463-Ala505 and Arg465-Glu361. Consequently, this finding is expected to provide a new insight into the reason for loss-of-function of SHP2 caused by Y279C mutation.Communicated by Ramaswamy H. Sarma. FAU - Liu, Wen-Shan AU - Liu WS AD - School of Pharmacy, Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), Tianjin Medical University, Tianjin, China. FAU - Wang, Rui-Rui AU - Wang RR AD - School of Pharmacy, Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), Tianjin Medical University, Tianjin, China. FAU - Li, Wei-Ya AU - Li WY AD - School of Pharmacy, Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), Tianjin Medical University, Tianjin, China. FAU - Rong, Mei AU - Rong M AD - School of Pharmacy, Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), Tianjin Medical University, Tianjin, China. FAU - Liu, Chi-Lu AU - Liu CL AD - School of Pharmacy, Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), Tianjin Medical University, Tianjin, China. FAU - Ma, Ying AU - Ma Y AD - School of Pharmacy, Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), Tianjin Medical University, Tianjin, China. FAU - Wang, Run-Ling AU - Wang RL AD - School of Pharmacy, Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), Tianjin Medical University, Tianjin, China. LA - eng PT - Journal Article DEP - 20190701 PL - England TA - J Biomol Struct Dyn JT - Journal of biomolecular structure & dynamics JID - 8404176 RN - EC 3.1.3.48 (PTPN11 protein, human) RN - EC 3.1.3.48 (Protein Tyrosine Phosphatase, Non-Receptor Type 11) SB - IM MH - Humans MH - Hydrogen Bonding MH - *LEOPARD Syndrome MH - *Molecular Dynamics Simulation MH - Mutation MH - Protein Structure, Secondary MH - Protein Tyrosine Phosphatase, Non-Receptor Type 11/*genetics OTO - NOTNLM OT - NSML OT - SHP2WT OT - SHP2Y279C OT - molecular dynamics simulation EDAT- 2019/07/02 06:00 MHDA- 2021/06/22 06:00 CRDT- 2019/07/02 06:00 PHST- 2019/07/02 06:00 [pubmed] PHST- 2021/06/22 06:00 [medline] PHST- 2019/07/02 06:00 [entrez] AID - 10.1080/07391102.2019.1634641 [doi] PST - ppublish SO - J Biomol Struct Dyn. 2020 Jun;38(9):2509-2520. doi: 10.1080/07391102.2019.1634641. Epub 2019 Jul 1.