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Öztürk C, Kalay E, Gerni S, Balci N, Tokali FS, Aslan ON, Polat E. Sulfonamide derivatives with benzothiazole scaffold: Synthesis and carbonic anhydrase I-II inhibition properties. Biotechnol Appl Biochem 2024; 71:223-231. [PMID: 37964505 DOI: 10.1002/bab.2534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 11/02/2023] [Indexed: 11/16/2023]
Abstract
The secondary sulfonamide derivatives containing benzothiazole scaffold (1-10) were synthesized to determine their inhibition properties on two physiologically essential human carbonic anhydrases isoforms (hCAs, EC, 4.2.1.1), hCA I, and hCA II. The inhibitory effects of the compounds on hCA I and hCA II isoenzymes were investigated by comparing their IC50 and Ki values. The Ki values of compounds (1-10) against hCA I and hCA II are in the range of 0.052 ± 0.022-0.971 ± 0.280 and 0.025 ± 0.010-0.682 ± 0.335, respectively. Some of these inhibited the enzyme more effectively than the standard drug, acetazolamide. In particular, compounds 5 and 4 were found to be most effective on hCA I and hCA II.
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Affiliation(s)
- Cansu Öztürk
- Department of Chemistry, Faculty of Science, Atatürk University, Erzurum, Turkey
| | - Erbay Kalay
- Department of Material and Material Processing Technologies, Kars Vocational School, Kafkas University, Kars, Turkey
| | - Serpil Gerni
- Department of Chemistry, Faculty of Science, Atatürk University, Erzurum, Turkey
| | - Neslihan Balci
- Siran Dursun Keles Vocational School of Health Services, Gümüshane University, Gümüshane, Turkey
| | - Feyzi Sinan Tokali
- Department of Material and Material Processing Technologies, Kars Vocational School, Kafkas University, Kars, Turkey
| | - Osman Nuri Aslan
- East Anatolian High Technology Application and Research Center, Atatürk University, Erzurum, Turkey
| | - Emrah Polat
- Department of Chemistry, Faculty of Science, Atatürk University, Erzurum, Turkey
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Moghoufei L, Mehrabi M, Adibi H, Khodarahmi R. Synthesis of 4-hydroxy- L-proline derivatives as new non-classical inhibitors of human carbonic anhydrase II activity: an in vitro study. J Biomol Struct Dyn 2023; 41:7975-7985. [PMID: 36166619 DOI: 10.1080/07391102.2022.2127905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 09/17/2022] [Indexed: 10/14/2022]
Abstract
Carbonic anhydrase (CA) is a zinc metalloenzyme that facilitates the rapid conversion of water and carbon dioxide into proton and bicarbonate ion. CA isozymes have been broadly studied in many pathological/physiological processes. In the current research, a series of 4-hydroxy-L-proline derivatives were designed and chemically synthetized, and interaction of these carboxylic acid-based compounds with hCA II were evaluated. Results indicated that different derivatives had different potencies on hCAII inhibitory activity and among them, compounds 3 b and 3c had the lowest IC50 and Kd values than 4-hydroxy-L-proline and other derivatives and therefore had the most affinity to the hCA II enzyme. As a result, compounds 3 b and 3c were chosen for additional testing in this research. The Kinetic data demonstrated that 3 b and 3c inhibit the hCA II esterase activity in a linear competitive way, with Ki values in the low micromolar range. Fluorescence tests showed that the hCA II surface hydrophobicity is diminished in the presence of compounds 3 b and 3c, as confirmed by the decrease in ANS binding to hCA II in their presence. Docking results revealed that 3 b and 3c had more binding energy than 4-hydroxy-L-proline. Furthermore, these compounds could occupy the active site of hCA II, where they would interact with critical amino acid residues via non-covalent forces to inhibit hCA II. Overall, the strengthening of inhibitory activity and the binding power of these carboxylic acid derivatives (3 b and 3c) for the hCA II makes these compounds interesting for designing novel hCA II inhibitors.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Leila Moghoufei
- Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Masomeh Mehrabi
- Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Hadi Adibi
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Reza Khodarahmi
- Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
- Department of Pharmacognosy and Biotechnology, Faculty of Pharmacy, Kermanshah University of Medical Sciences, Kermanshah, Iran
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Huang X, Winter D, Glover DJ, Supuran CT, Donald WA. Effects of Phosphorylation on the Activity, Inhibition and Stability of Carbonic Anhydrases. Int J Mol Sci 2023; 24:ijms24119275. [PMID: 37298228 DOI: 10.3390/ijms24119275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 05/23/2023] [Accepted: 05/24/2023] [Indexed: 06/12/2023] Open
Abstract
Carbonic anhydrases (CAs) are a metalloenzyme family that have important roles in cellular processes including pH homeostasis and have been implicated in multiple pathological conditions. Small molecule inhibitors have been developed to target carbonic anhydrases, but the effects of post-translational modifications (PTMs) on the activity and inhibition profiles of these enzymes remain unclear. Here, we investigate the effects of phosphorylation, the most prevalent carbonic anhydrase PTM, on the activities and drug-binding affinities of human CAI and CAII, two heavily modified active isozymes. Using serine to glutamic acid (S > E) mutations to mimic the effect of phosphorylation, we demonstrate that phosphomimics at a single site can significantly increase or decrease the catalytic efficiencies of CAs, depending on both the position of the modification and the CA isoform. We also show that the S > E mutation at Ser50 of hCAII decreases the binding affinities of hCAII with well-characterized sulphonamide inhibitors including by over 800-fold for acetazolamide. Our findings suggest that CA phosphorylation may serve as a regulatory mechanism for enzymatic activity, and affect the binding affinity and specificity of small, drug and drug-like molecules. This work should motivate future studies examining the PTM-modification forms of CAs and their distributions, which should provide insights into CA physiopathological functions and facilitate the development of 'modform-specific' carbonic anhydrase inhibitors.
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Affiliation(s)
- Xiaojing Huang
- School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia
| | - Daniel Winter
- School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia
| | - Dominic J Glover
- School of Biotechnology & Biomolecular Sciences, University of New South Wales, Sydney, NSW 2052, Australia
| | - Claudiu T Supuran
- Neurofarba Department, Sezione di Scienze Farmaceutiche, Universita degli Studi di Firenze, Via Ugo Schiff 6, Sesto Fiorentino, 50019 Florence, Italy
| | - William A Donald
- School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia
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Glöckner S, Heine A, Klebe G. A Proof-of-Concept Fragment Screening of a Hit-Validated 96-Compounds Library against Human Carbonic Anhydrase II. Biomolecules 2020; 10:biom10040518. [PMID: 32235320 PMCID: PMC7226012 DOI: 10.3390/biom10040518] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Revised: 03/25/2020] [Accepted: 03/27/2020] [Indexed: 11/16/2022] Open
Abstract
Fragment screening is a powerful tool to identify and characterize binding pockets in proteins. We herein present the results of a proof-of-concept screening campaign of a versatile 96-entry fragment library from our laboratory against the drug target and model protein human carbonic anhydrase II. The screening revealed a novel chemotype for carbonic anhydrase inhibition, as well as less common non-covalent interaction types and unexpected covalent linkages. Lastly, different runs of the PanDDA tool reveal a practical hint for its application.
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Yildirmis S, Alver A, Yandi YE, Demir S, Senturk A, Bodur A, Mentese A. The effect of erythrocyte membranes from diabetic and hypercholesterolemic individuals on human carbonic anhydrase II activity. Arch Physiol Biochem 2016; 122:14-8. [PMID: 26698855 DOI: 10.3109/13813455.2015.1111909] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
CONTEXT Erythrocyte membranes regulate many enzyme activities, including carbonic anhydrase II (CA II). Membrane fluidity is associated with alterations in protein function and protein-protein interactions. OBJECTIVE The purpose of this study was to show the human CA II (hCA II) activity regulation by human erythrocyte membranes from diabetic and hypercholesterolemic subjects. MATERIALS AND METHODS Erythrocyte membranes were obtained from diabetic, hypercholesterolemic, and healthy subjects. hCA II activity was measured using the electrometric method. RESULTS hCA II activity was increased in vitro by membranes from both diabetic and hypercholesterolemic patients, with hypercholesterolemic membranes exhibiting a greater increase. CONCLUSION Changes in membrane composition may affect the erythrocyte membranes' capacity to increase in vitro hCA II activity.
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Affiliation(s)
- Sermet Yildirmis
- a Department of Biochemistry , Faculty of Pharmacy, Karadeniz Technical University , Trabzon , Turkey
| | - Ahmet Alver
- b Department of Medical Biochemistry , Faculty of Medicine, Karadeniz Technical University , Trabzon , Turkey
| | - Yunus Emre Yandi
- c Department of Medical Services and Techniques , Vocational School of Health Services, Bülent Ecevit University , Zonguldak , Turkey , and
| | - Selim Demir
- d Department of Nutrition and Dietetics , Faculty of Health Sciences, Karadeniz Technical University , Trabzon , Turkey
| | - Ayse Senturk
- b Department of Medical Biochemistry , Faculty of Medicine, Karadeniz Technical University , Trabzon , Turkey
| | - Akin Bodur
- b Department of Medical Biochemistry , Faculty of Medicine, Karadeniz Technical University , Trabzon , Turkey
| | - Ahmet Mentese
- b Department of Medical Biochemistry , Faculty of Medicine, Karadeniz Technical University , Trabzon , Turkey
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Abstract
Aryl sulfonamides are a widely used drug class for the inhibition of carbonic anhydrases. In the context of our program of photochromic pharmacophores we were interested in the exploration of azobenzene-containing sulfonamides to block the catalytic activity of human carbonic anhydrase II (hCAII). Herein, we report the synthesis and in vitro evaluation of a small library of nine photochromic sulfonamides towards hCAII. All molecules are azobenzene-4-sulfonamides, which are substituted by different functional groups in the 4´-position and were characterized by X-ray crystallography. We aimed to investigate the influence of electron-donating or electron-withdrawing substituents on the inhibitory constant K i. With the aid of an hCAII crystal structure bound to one of the synthesized azobenzenes, we found that the electronic structure does not strongly affect inhibition. Taken together, all compounds are strong blockers of hCAII with K i = 25-65 nM that are potentially photochromic and thus combine studies from chemical synthesis, crystallography and enzyme kinetics.
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Affiliation(s)
- Leander Simon Runtsch
- Department of Chemistry, Ludwig-Maximilians-University Munich and Munich Center for Integrated Protein Science, Butenandtstrasse 5-13, 81377 Munich, Germany
| | - David Michael Barber
- Department of Chemistry, Ludwig-Maximilians-University Munich and Munich Center for Integrated Protein Science, Butenandtstrasse 5-13, 81377 Munich, Germany
| | - Peter Mayer
- Department of Chemistry, Ludwig-Maximilians-University Munich and Munich Center for Integrated Protein Science, Butenandtstrasse 5-13, 81377 Munich, Germany
| | - Michael Groll
- Department of Biochemistry, Technical University Munich and Munich Center for Integrated Protein Science, Lichtenbergstr. 4, 85748 Garching, Germany
| | - Dirk Trauner
- Department of Chemistry, Ludwig-Maximilians-University Munich and Munich Center for Integrated Protein Science, Butenandtstrasse 5-13, 81377 Munich, Germany
| | - Johannes Broichhagen
- Department of Chemistry, Ludwig-Maximilians-University Munich and Munich Center for Integrated Protein Science, Butenandtstrasse 5-13, 81377 Munich, Germany
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Boone CD, Habibzadegan A, Tu C, Silverman DN, McKenna R. Structural and catalytic characterization of a thermally stable and acid-stable variant of human carbonic anhydrase II containing an engineered disulfide bond. Acta Crystallogr D Biol Crystallogr 2013; 69:1414-22. [PMID: 23897465 DOI: 10.1107/s0907444913008743] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Accepted: 03/30/2013] [Indexed: 11/10/2022]
Abstract
The carbonic anhydrases (CAs) are a family of mostly zinc metalloenzymes that catalyze the reversible hydration of CO2 to bicarbonate and a proton. Recently, there has been industrial interest in utilizing CAs as biocatalysts for carbon sequestration and biofuel production. The conditions used in these processes, however, result in high temperatures and acidic pH. This unfavorable environment results in rapid destabilization and loss of catalytic activity in CAs, ultimately resulting in cost-inefficient high-maintenance operation of the system. In order to negate these detrimental industrial conditions, cysteines at residues 23 (Ala23Cys) and 203 (Leu203Cys) were engineered into a wild-type variant of human CA II (HCAII) containing the mutation Cys206Ser. The X-ray crystallographic structure of the disulfide-containing HCAII (dsHCAII) was solved to 1.77 Å resolution and revealed that successful oxidation of the cysteine bond was achieved while also retaining desirable active-site geometry. Kinetic studies utilizing the measurement of (18)O-labeled CO2 by mass spectrometry revealed that dsHCAII retained high catalytic efficiency, and differential scanning calorimetry showed acid stability and thermal stability that was enhanced by up to 14 K compared with native HCAII. Together, these studies have shown that dsHCAII has properties that could be used in an industrial setting to help to lower costs and improve the overall reaction efficiency.
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Affiliation(s)
- Christopher D Boone
- Department of Biochemistry and Molecular Biology, University of Florida, PO Box 100245, Gainesville, FL 32610, USA
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Wu MJ, Jiang Y, Yan YB. Impact of the 237th residue on the folding of human carbonic anhydrase II. Int J Mol Sci 2011; 12:2797-807. [PMID: 21686151 DOI: 10.3390/ijms12052797] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2011] [Revised: 04/07/2011] [Accepted: 04/12/2011] [Indexed: 02/08/2023] Open
Abstract
The deficiency of human carbonic anhydrase II (HCAII) has been recognized to be associated with a disease called CAII deficiency syndrome (CADS). Among the many mutations, the P237H mutation has been characterized to lead to a significant decrease in the activity of the enzyme and in the Gibbs free energy of folding. However, sequence alignment indicated that the 237th residue of CAII is not fully conserved across all species. The FoldX theoretical calculations suggested that this residue did not significantly contribute to the overall folding of HCAII, since all mutants had small ΔΔG values (around 1 kcal/mol). The experimental determination indicated that at least three mutations affect HCAII folding significantly and the P237H mutation was the most deleterious one, suggesting that Pro237 was important to HCAII folding. The discrepancy between theoretical and experimental results suggested that caution should be taken when using the prediction methods to evaluate the details of disease-related mutations.
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