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Marques HM. The inorganic chemistry of the cobalt corrinoids - an update. J Inorg Biochem 2023; 242:112154. [PMID: 36871417 DOI: 10.1016/j.jinorgbio.2023.112154] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Revised: 01/23/2023] [Accepted: 01/26/2023] [Indexed: 02/05/2023]
Abstract
The inorganic chemistry of the cobalt corrinoids, derivatives of vitamin B12, is reviewed, with particular emphasis on equilibrium constants for, and kinetics of, their axial ligand substitution reactions. The role the corrin ligand plays in controlling and modifying the properties of the metal ion is emphasised. Other aspects of the chemistry of these compounds, including their structure, corrinoid complexes with metals other than cobalt, the redox chemistry of the cobalt corrinoids and their chemical redox reactions, and their photochemistry are discussed. Their role as catalysts in non-biological reactions and aspects of their organometallic chemistry are briefly mentioned. Particular mention is made of the role that computational methods - and especially DFT calculations - have played in developing our understanding of the inorganic chemistry of these compounds. A brief overview of the biological chemistry of the B12-dependent enzymes is also given for the reader's convenience.
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Affiliation(s)
- Helder M Marques
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg 2050, South Africa.
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Mishra D, Maurya RR, Kumar K, Munjal NS, Bahadur V, Sharma S, Singh P, Bahadur I. Structurally modified compounds of hydroxychloroquine, remdesivir and tetrahydrocannabinol against main protease of SARS-CoV-2, a possible hope for COVID-19: Docking and molecular dynamics simulation studies. J Mol Liq 2021; 335:116185. [PMID: 33879934 PMCID: PMC8051003 DOI: 10.1016/j.molliq.2021.116185] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 04/03/2021] [Accepted: 04/14/2021] [Indexed: 02/07/2023]
Abstract
Now a days, more than 200 countries faces the health crisis due to epidemiological disease COVID-19 caused by SARS-CoV-2 virus. It will cause a very high impact on world's economy and global health sector. Earlier the structure of main protease (Mpro) protein was deposited in the RCSB protein repository. Hydroxychloroquine (HCQ) and remdesivir were found to effective in treatment of COVID-19 patients. Here we have performed docking and molecule dynamic (MD) simulation study of HCQ and remdesivir with Mpro protein which gave promising results to inhibit Mpro protein in SARS-CoV-2. On the basis of results obtained we designed structurally modified 18 novel derivatives of HCQ, remdesivir and tetrahydrocannabinol (THC) and carried out docking studies of all the derivatives. From the docking studies six molecules DK4, DK7, DK10, DK16, DK17 and DK19 gave promising results and can be use as inhibitor for Mpro of SARS-CoV-2 to control COVID-19 very effectively. Further, molecular dynamics simulation of one derivative of HCQ and one derivative of tetrahydrocannabinol showing excellent docking score was performed along with the respective parent molecules. The two derivatives gave excellent docking score and higher stability than the parent molecule as validated with molecular dynamics (MD) simulation for the binding affinities towards Mpro of SARS-CoV-2 thus represented as strong inhibitors at very low concentration.
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Affiliation(s)
- Deepak Mishra
- Department of Chemistry, SRM University, Delhi-NCR Sonepa t, Haryana 131029, India
| | - Radha Raman Maurya
- Department of Chemistry, Ramjas College, University of Delhi, University Enclave, Delhi 110007, India
| | - Kamlesh Kumar
- Department of Chemistry, Kumaun University, Nainital 263001, UK, India,Corresponding authors
| | - Nupur S. Munjal
- Institute of Bioinformatics, International Technology Park, Bangalore 560066, India
| | - Vijay Bahadur
- Department of Chemistry, SRM University, Delhi-NCR Sonepa t, Haryana 131029, India
| | - Sandeep Sharma
- Department of Chemistry, SRM University, Delhi-NCR Sonepa t, Haryana 131029, India
| | - Prashant Singh
- Department of Chemistry, Atma Ram Sanatan Dharma (ARSD) College, Delhi University, New Delhi 110021, India
| | - Indra Bahadur
- Department of Chemistry, Faculty of Natural and Agricultural Sciences, North-West University, South Africa,Corresponding authors
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3
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Munjal NS, Shukla R, Singh TR. Physicochemical characterization of paclitaxel prodrugs with cytochrome 3A4 to correlate solubility and bioavailability implementing molecular docking and simulation studies. J Biomol Struct Dyn 2021; 40:5983-5995. [PMID: 33491578 DOI: 10.1080/07391102.2021.1875881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Prodrugs are biologically inactive drug molecules that may be developed through rational drug design with an objective to improve a drug's pharmaceutical and pharmacokinetic properties. Paclitaxel, a highly potent anticancer drug, is directed against many cancers like breast cancer, ovarian cancer, lung cancer, head and neck tumors, non-small cell lung cancer, and Kaposi's sarcoma, etc. Along with its excellent antitumor activity the drug had a major limitation of low water solubility. To overcome this limitation of this nanomolar active drug many prodrugs were formed in the past. Though increase in the solubility of the drug was obtained but that may or may not account for its increase in bioavailability. CYP3A4 liver enzymes are responsible for the metabolism of fifty percent of the drugs and are major metabolizing enzyme for paclitaxel. Phosphate prodrugs are well known to account the insolubility of many drugs and thus increasing their bioavailability also. In this study, we calculated the ADMET properties of a dataset of twenty phosphate prodrugs of paclitaxel. On the basis of reflection of three favourable properties, ten prodrugs were chosen for further docking studies against CYP3A4. Finally, three prodrugs showing unfavourable binding affinities were selected for Molecular Dynamics Simulations and from this in-silico study we identified that all the three selected prodrugs were unstable as compared to the paclitaxel. The instability of these prodrugs showed their lesser interaction with the CYP3A4 and hence contributing more towards its bioavailability. Thus the three suggested prodrugs those were studied in-silico for oral bioavailability can be further validated for gastrointestinal cancer.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Nupur S Munjal
- Department of Biotechnology and Bioinformatics, Jaypee University of Information Technology, Solan, Himachal Pradesh, India
| | - Rohit Shukla
- Department of Biotechnology and Bioinformatics, Jaypee University of Information Technology, Solan, Himachal Pradesh, India
| | - Tiratha Raj Singh
- Department of Biotechnology and Bioinformatics, Jaypee University of Information Technology, Solan, Himachal Pradesh, India.,Centre of Excellence in Healthcare Technologies and Informatics (CEHTI), Department of Biotechnology and Bioinformatics, Jaypee University of Information Technology, Solan, Himachal Pradesh, India
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Munjal NS, Shukla R, Singh TR. Chemometric approach to estimate kinetic properties of paclitaxel prodrugs and their substructures for solubility prediction through molecular modelling and simulation studies. JOURNAL OF CHEMOMETRICS 2019; 33. [DOI: 10.1002/cem.3181] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Accepted: 07/30/2019] [Indexed: 08/30/2023]
Affiliation(s)
- Nupur S. Munjal
- Department of Biotechnology and BioinformaticsJaypee University of Information Technology Waknaghat, Solan India
| | - Rohit Shukla
- Department of Biotechnology and BioinformaticsJaypee University of Information Technology Waknaghat, Solan India
| | - Tiratha Raj Singh
- Department of Biotechnology and BioinformaticsJaypee University of Information Technology Waknaghat, Solan India
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Cortés-Arriagada D, Toro-Labbe A, Mora JR, Rincón L, Mereau R, Torres FJ. Theoretical analysis of C-F bond cleavage mediated by cob[I]alamin-based structures. J Mol Model 2017; 23:264. [PMID: 28819880 DOI: 10.1007/s00894-017-3431-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Accepted: 07/25/2017] [Indexed: 10/19/2022]
Abstract
In the present work, C-F bond cleavage mediated by the super-reduced form of cobalamin (i.e., CoICbl) was theoretically studied at the ONIOM(BP86/6-311++G(d,p):PM6) + SMD level of theory. Dispersion effects were introduced by employing Grimme's empirical dispersion at the ONIOM(BP86-D/6-311++G(d,p):PM6) + SMD level. In the first stage of the study, cobalamin was characterized in terms of the coordination number of the central cobalt atom. The ONIOM(BP86/6-311++G(d,p):PM6) results showed that the base-off form of the system is slightly more stable than its base-on counterpart (ΔE = E base-off - E base-on ~ -2 kcal/mol). The inclusion of dispersive forces in the description of the system stabilizes the base-on form, which becomes as stable as its base-off counterpart. Moreover, in the latter case, the energy barrier separating both structures was found to be negligible, with a computed value of 1.02 kcal/mol. In the second stage of the work, the reaction CoICbl + CH3F → MeCbl + F- was studied considering the base-off and the base-on forms of CoICbl. The reaction that occurs in the presence of the base-on form of CoICbl was found to be kinetically more favorable (ΔE ≠ = 13.7 kcal/mol) than that occurring in the presence of the base-off form (ΔE ≠ = 41.2 kcal/mol). Further reaction-force analyses of the processes showed that the energy barrier to C-F bond cleavage arises largely due to structural rearrangements when the reaction occurs on the base-on form of the CoICbl complex, but is mainly due to electronic rearrangements when the reaction takes place on the base-off form of the complex. The latter behavior emerges from differences in the synchronicity of the bond strengthening/weakening processes along the reaction path; the base-on mode of CoICbl is able to decrease the synchronicity of the chemical events. This work gives new molecular-level insights into the role of Cbl-based systems in the cleavage of C-F bonds. These insights have potential implications for research into processes for degrading fluorine-containing pollutants.
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Affiliation(s)
- D Cortés-Arriagada
- Programa Institucional de Fomento a la Investigación, Desarrollo e Innovación, Universidad Tecnológica Metropolitana, Ignacio Valdivieso 2409, P.O. Box 8940577, San Joaquín, Santiago, Chile
| | - A Toro-Labbe
- Nucleus Millennium Chemical Processes and Catalysis (CPC), Laboratorio de Química Teórica Computacional (QTC), Facultad de Química, Pontificia Universidad Católica de Chile, Casilla 306, Correo 22, Santiago, Chile
| | - J R Mora
- Instituto de Simulación Computacional (ISC-USFQ), Diego de Robles y Vía Interoceánica, Universidad San Francisco de Quito, 17-1200-841, Quito, Ecuador.,Grupo de Química Computacional y Teórica (QCT-USFQ), Departamento de Ingeniería Química, Diego de Robles y Vía Interoceánica, Universidad San Francisco de Quito, 17-1200-841, Quito, Ecuador
| | - L Rincón
- Instituto de Simulación Computacional (ISC-USFQ), Diego de Robles y Vía Interoceánica, Universidad San Francisco de Quito, 17-1200-841, Quito, Ecuador.,Grupo de Química Computacional y Teórica (QCT-USFQ), Departamento de Ingeniería Química, Diego de Robles y Vía Interoceánica, Universidad San Francisco de Quito, 17-1200-841, Quito, Ecuador
| | - R Mereau
- Université de Bordeaux, ISM, UMR 5255, 351 Cours de la Libération, F-33405, Talence, France
| | - F J Torres
- Instituto de Simulación Computacional (ISC-USFQ), Diego de Robles y Vía Interoceánica, Universidad San Francisco de Quito, 17-1200-841, Quito, Ecuador. .,Grupo de Química Computacional y Teórica (QCT-USFQ), Departamento de Ingeniería Química, Diego de Robles y Vía Interoceánica, Universidad San Francisco de Quito, 17-1200-841, Quito, Ecuador.
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Zhang P, Fiedler L, Leverentz HR, Truhlar DG, Gao J. Polarized Molecular Orbital Model Chemistry. II. The PMO Method. J Chem Theory Comput 2011; 7:857-867. [PMID: 23378824 PMCID: PMC3560573 DOI: 10.1021/ct100638g] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We present a new semiempirical molecular orbital method based on neglect of diatomic differential overlap. This method differs from previous NDDO-based methods in that we include p orbitals on hydrogen atoms to provide a more realistic modeling of polarizability. As in AM1-D and PM3-D, we also include damped dispersion. The formalism is based on the original MNDO one, but in the process of parameterization we make some specific changes to some of the functional forms. The present article is a demonstration of the capability of the new approach, and it presents a successful parametrization for compounds composed only of hydrogen and oxygen atoms, including the important case of water clusters.
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Affiliation(s)
- Peng Zhang
- Department of Chemistry and Supercomputing Institute, University of Minnesota, 207 Pleasant Street S.E., Minneapolis, MN 55455-0431
| | - Luke Fiedler
- Department of Chemistry and Supercomputing Institute, University of Minnesota, 207 Pleasant Street S.E., Minneapolis, MN 55455-0431
| | - Hannah R. Leverentz
- Department of Chemistry and Supercomputing Institute, University of Minnesota, 207 Pleasant Street S.E., Minneapolis, MN 55455-0431
| | - Donald G. Truhlar
- Department of Chemistry and Supercomputing Institute, University of Minnesota, 207 Pleasant Street S.E., Minneapolis, MN 55455-0431
| | - Jiali Gao
- Department of Chemistry and Supercomputing Institute, University of Minnesota, 207 Pleasant Street S.E., Minneapolis, MN 55455-0431
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da Costa LM, Carneiro JWDM, Paes LWC, Romeiro GA. Density Functional Theory studies on interactions of phosphoryl ligands with the Ca2+ cation: Affinity and associated parameters. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.theochem.2009.06.035] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Tuttle T, Thiel W. OMx-D: semiempirical methods with orthogonalization and dispersion corrections. Implementation and biochemical application. Phys Chem Chem Phys 2008; 10:2159-66. [DOI: 10.1039/b718795e] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Budzisz E, Małecka M, Lorenz IP, Mayer P, Kwiecień RA, Paneth P, Krajewska U, Rózalski M. Synthesis, cytotoxic effect, and structure-activity relationship of Pd(II) complexes with coumarin derivatives. Inorg Chem 2007; 45:9688-95. [PMID: 17112264 DOI: 10.1021/ic0605569] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report the influence of the substituent at the N atom of the ligands on the synthesis, biological activity, and stability of Pd(II) complexes of the general formula PdL(2). The compounds adopt a cis or trans configuration with respect to the substituent at the nitrogen atom. Sterically hindered substituents promote the formation of trans isomers, whereas when the nitrogen atom is unsubstituted, cis isomers are formed. The compounds were characterized by elemental analysis, infrared and 1H NMR spectroscopies, and electrospray mass spectrometry. The complexes were also studied using X-ray diffraction and computational DFT methods. Both complexes cis-3a and trans-3c exhibit square-planar geometries around the Pd(II) atom. The cytotoxic effects of these complexes were examined on two human leukemia cell lines, HL-60 and NALM-6. Pd complex cis-3a showed significant cytotoxic activity. The effects exhibited by this complex were comparable to those reported for carboplatin. Loigand 2a was not cytotoxic. Computational analysis carried out at the PB/B3LYP/LACVP**//mPW1PW91/LanL2DZ level showed excellent correlation between the energy difference of the cis and trans isomers and the cytotoxic activity, rendering computations a useful predictive tool for the design of new drugs.
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Affiliation(s)
- Elzbieta Budzisz
- Department of Cosmetic Raw Materials Chemistry, Faculty of Pharmacy, Medical University of Łódź, Łódź, Poland.
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