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Wang C, Hu B, Yang Y, Wang Y, Qin J, Wen X, Li Y, Li H, Wang Y, Wang J, Liu Y. Structural simulation and selective inhibitor discovery study for histone demethylases KDM4E/6B from a computational perspective. Comput Biol Chem 2024; 110:108072. [PMID: 38636391 DOI: 10.1016/j.compbiolchem.2024.108072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 04/10/2024] [Accepted: 04/11/2024] [Indexed: 04/20/2024]
Abstract
The methylation and demethylation of lysine and arginine side chains are fundamental processes in gene regulation and disease development. Histone lysine methylation, controlled by histone lysine methyltransferases (KMTs) and histone lysine demethylases (KDMs), plays a vital role in maintaining cellular homeostasis and has been implicated in diseases such as cancer and aging. This study focuses on two members of the lysine demethylase (KDM) family, KDM4E and KDM6B, which are significant in gene regulation and disease pathogenesis. KDM4E demonstrates selectivity for gene regulation, particularly concerning cancer, while KDM6B is implicated in inflammation and cancer. The study utilizes specific inhibitors, DA-24905 and GSK-J1, showcasing their exceptional selectivity for KDM4E and KDM6B, respectively. Employing an array of computational simulations, including sequence alignment, molecular docking, dynamics simulations, and free energy calculations, we conclude that although the binding cavities of KDM4E and KDM6B has high similarity, there are still some different crucial amino acid residues, indicating diverse binding forms between protein and ligands. Various interaction predominates when proteins are bound to different ligands, which also has significant effect on selective inhibition. These findings provide insights into potential therapeutic strategies for diseases by selectively targeting these KDM members.
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Affiliation(s)
- Chenxiao Wang
- Key Laboratory of Structure-Based Drug Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China; School of Pharmacy, Shenyang Pharmaceutical University, Benxi 117004, China
| | - Baichun Hu
- Key Laboratory of Structure-Based Drug Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China; School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Benxi 117004, China; Key Laboratory of Intelligent Drug Design and New Drug Discovery of Liaoning Province, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Yi Yang
- Key Laboratory of Structure-Based Drug Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China; School of Pharmacy, Shenyang Pharmaceutical University, Benxi 117004, China
| | - Yihan Wang
- Key Laboratory of Structure-Based Drug Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China; School of Pharmacy, Shenyang Pharmaceutical University, Benxi 117004, China
| | - Juyue Qin
- Key Laboratory of Structure-Based Drug Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China; School of Pharmacy, Shenyang Pharmaceutical University, Benxi 117004, China
| | - Xiaolian Wen
- Key Laboratory of Structure-Based Drug Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China; School of Pharmacy, Shenyang Pharmaceutical University, Benxi 117004, China
| | - Yikuan Li
- Key Laboratory of Structure-Based Drug Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China; School of Pharmacy, Shenyang Pharmaceutical University, Benxi 117004, China
| | - Hui Li
- Key Laboratory of Structure-Based Drug Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China; School of Pharmacy, Shenyang Pharmaceutical University, Benxi 117004, China
| | - Yutong Wang
- Key Laboratory of Structure-Based Drug Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China; School of Pharmacy, Shenyang Pharmaceutical University, Benxi 117004, China
| | - Jian Wang
- Key Laboratory of Structure-Based Drug Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China; School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Benxi 117004, China; Key Laboratory of Intelligent Drug Design and New Drug Discovery of Liaoning Province, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Yang Liu
- Key Laboratory of Structure-Based Drug Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China; School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Benxi 117004, China; Key Laboratory of Intelligent Drug Design and New Drug Discovery of Liaoning Province, Shenyang Pharmaceutical University, Shenyang 110016, China.
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Maas MN, Hintzen JCJ, Mecinović J. Probing lysine posttranslational modifications by unnatural amino acids. Chem Commun (Camb) 2022; 58:7216-7231. [PMID: 35678513 DOI: 10.1039/d2cc00708h] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Posttranslational modifications, typically small chemical tags attached on amino acids following protein biosynthesis, have a profound effect on protein structure and function. Numerous chemically and structurally diverse posttranslational modifications, including methylation, acetylation, hydroxylation, and ubiquitination, have been identified and characterised on lysine residues in proteins. In this feature article, we focus on chemical tools that rely on the site-specific incorporation of unnatural amino acids into peptides and proteins to probe posttranslational modifications of lysine. We highlight that simple amino acid mimics enable detailed mechanistic and functional assignment of enzymes that install and remove such modifications, and proteins that specifically recognise lysine posttranslational modifications.
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Affiliation(s)
- Marijn N Maas
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230 Odense, Denmark.
| | - Jordi C J Hintzen
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230 Odense, Denmark.
| | - Jasmin Mecinović
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230 Odense, Denmark.
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Maas MN, Hintzen JCJ, Porzberg MRB, Mecinović J. Trimethyllysine: From Carnitine Biosynthesis to Epigenetics. Int J Mol Sci 2020; 21:E9451. [PMID: 33322546 PMCID: PMC7764450 DOI: 10.3390/ijms21249451] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 12/09/2020] [Accepted: 12/09/2020] [Indexed: 12/14/2022] Open
Abstract
Trimethyllysine is an important post-translationally modified amino acid with functions in the carnitine biosynthesis and regulation of key epigenetic processes. Protein lysine methyltransferases and demethylases dynamically control protein lysine methylation, with each state of methylation changing the biophysical properties of lysine and the subsequent effect on protein function, in particular histone proteins and their central role in epigenetics. Epigenetic reader domain proteins can distinguish between different lysine methylation states and initiate downstream cellular processes upon recognition. Dysregulation of protein methylation is linked to various diseases, including cancer, inflammation, and genetic disorders. In this review, we cover biomolecular studies on the role of trimethyllysine in carnitine biosynthesis, different enzymatic reactions involved in the synthesis and removal of trimethyllysine, trimethyllysine recognition by reader proteins, and the role of trimethyllysine on the nucleosome assembly.
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Affiliation(s)
| | | | | | - Jasmin Mecinović
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230 Odense, Denmark; (M.N.M.); (J.C.J.H.); (M.R.B.P.)
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Ghanty U, DeNizio JE, Liu MY, Kohli RM. Exploiting Substrate Promiscuity To Develop Activity-Based Probes for Ten-Eleven Translocation Family Enzymes. J Am Chem Soc 2018; 140:17329-17332. [PMID: 30518204 PMCID: PMC6470038 DOI: 10.1021/jacs.8b04722] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Ten-eleven translocation (TET) enzymes catalyze repeated oxidations of 5-methylcytosine in genomic DNA. Because of the challenges of tracking reactivity within a complex DNA substrate, chemical tools to probe TET activity are limited, despite these enzyme's crucial role in epigenetic regulation. Here, building on precedents from related Fe(II)/α-ketoglutarate-dependent dioxygenases, we show that TET enzymes can promiscuously act upon cytosine bases with unnatural 5-position modifications. Oxidation of 5-vinylcytosine (vC) in DNA results in the predominant formation of a 5-formylmethylcytosine product that can be efficiently labeled to provide an end-point read-out for TET activity. The reaction with 5-ethynylcytosine (eyC), moreover, results in the formation of a high-energy ketene intermediate that can selectively trap any active TET isoform as a covalent enzyme-DNA complex, even in the complex milieu of a total cell lysate. Exploiting substrate promiscuity therefore offers a new and needed means to directly track TET activity in vitro or in vivo.
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Affiliation(s)
- Uday Ghanty
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
- Department of Biochemistry and Biophysics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
| | - Jamie E. DeNizio
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
- Department of Biochemistry and Biophysics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
| | - Monica Yun Liu
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
- Department of Biochemistry and Biophysics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
| | - Rahul M. Kohli
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
- Department of Biochemistry and Biophysics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
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