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Temkov M, Dimitrovski D, Velickova E, Krastanov A. Inulinase immobilisation in PAA/PEG composite for efficient fructooligosaccharides production. BIOCATAL BIOTRANSFOR 2020. [DOI: 10.1080/10242422.2020.1858815] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Mishela Temkov
- Faculty of Technology and Metallurgy, Ss. Cyril and Methodius University in Skopje, Skopje, Republic of North Macedonia
- Faculty of Technology, University of Food Technologies, Plovdiv, Bulgaria
| | - Darko Dimitrovski
- Faculty of Technology and Metallurgy, Ss. Cyril and Methodius University in Skopje, Skopje, Republic of North Macedonia
| | - Elena Velickova
- Faculty of Technology and Metallurgy, Ss. Cyril and Methodius University in Skopje, Skopje, Republic of North Macedonia
| | - Albert Krastanov
- Faculty of Technology, University of Food Technologies, Plovdiv, Bulgaria
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Moons J, Azambuja F, Mihailovic J, Kozma K, Smiljanic K, Amiri M, Cirkovic Velickovic T, Nyman M, Parac‐Vogt TN. Discrete Hf
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Metal‐oxo Cluster as a Heterogeneous Nanozyme for Site‐Specific Proteolysis. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202001036] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Jens Moons
- Department of Chemistry KU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
| | - Francisco Azambuja
- Department of Chemistry KU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
| | - Jelena Mihailovic
- Faculty of Chemistry University of Belgrade Studentski trg 16 11000 Belgrade Serbia
| | - Karoly Kozma
- Department of Chemistry Oregon State University Corvallis OR 97331-4003 USA
| | - Katarina Smiljanic
- Faculty of Chemistry University of Belgrade Studentski trg 16 11000 Belgrade Serbia
| | - Mehran Amiri
- Department of Chemistry Oregon State University Corvallis OR 97331-4003 USA
| | - Tanja Cirkovic Velickovic
- Faculty of Chemistry University of Belgrade Studentski trg 16 11000 Belgrade Serbia
- Ghent University Global Campus Incheon South Korea
- Ghent University Faculty of Bioscience Engineering Ghent Belgium
- Serbian Academy of Sciences and Arts Belgrade Serbia
| | - May Nyman
- Department of Chemistry Oregon State University Corvallis OR 97331-4003 USA
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Moons J, de Azambuja F, Mihailovic J, Kozma K, Smiljanic K, Amiri M, Cirkovic Velickovic T, Nyman M, Parac-Vogt TN. Discrete Hf 18 Metal-oxo Cluster as a Heterogeneous Nanozyme for Site-Specific Proteolysis. Angew Chem Int Ed Engl 2020; 59:9094-9101. [PMID: 32154631 DOI: 10.1002/anie.202001036] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 03/04/2020] [Indexed: 12/11/2022]
Abstract
The selective hydrolysis of proteins by non-enzymatic catalysis is difficult to achieve, yet it is crucial for applications in biotechnology and proteomics. Herein, we report that discrete hafnium metal-oxo cluster [Hf18 O10 (OH)26 (SO4 )13 ⋅(H2 O)33 ] (Hf18 ), which is centred by the same hexamer motif found in many MOFs, acts as a heterogeneous catalyst for the efficient hydrolysis of horse heart myoglobin (HHM) in low buffer concentrations. Among 154 amino acids present in the sequence of HHM, strictly selective cleavage at only 6 solvent accessible aspartate residues was observed. Mechanistic experiments suggest that the hydrolytic activity is likely derived from the actuation of HfIV Lewis acidic sites and the Brønsted acidic surface of Hf18 . X-ray scattering and ESI-MS revealed that Hf18 is completely insoluble in these conditions, confirming the HHM hydrolysis is caused by a heterogeneous reaction of the solid Hf18 cluster, and not from smaller, soluble Hf species that could leach into solution.
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Affiliation(s)
- Jens Moons
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001, Leuven, Belgium
| | | | - Jelena Mihailovic
- Faculty of Chemistry, University of Belgrade, Studentski trg 16, 11000, Belgrade, Serbia
| | - Karoly Kozma
- Department of Chemistry, Oregon State University, Corvallis, OR, 97331-4003, USA
| | - Katarina Smiljanic
- Faculty of Chemistry, University of Belgrade, Studentski trg 16, 11000, Belgrade, Serbia
| | - Mehran Amiri
- Department of Chemistry, Oregon State University, Corvallis, OR, 97331-4003, USA
| | - Tanja Cirkovic Velickovic
- Faculty of Chemistry, University of Belgrade, Studentski trg 16, 11000, Belgrade, Serbia.,Ghent University Global Campus, Incheon, South Korea.,Ghent University, Faculty of Bioscience Engineering, Ghent, Belgium.,Serbian Academy of Sciences and Arts, Belgrade, Serbia
| | - May Nyman
- Department of Chemistry, Oregon State University, Corvallis, OR, 97331-4003, USA
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Sattar H, Bibi Z, Kamran A, Aman A, Ul Qader SA. Degradation of complex casein polymer: Production and optimization of a novel serine metalloprotease from Aspergillus niger KIBGE-IB36. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2019. [DOI: 10.1016/j.bcab.2019.101256] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Sattar H, Aman A, Qader SAU. Agar-agar immobilization: An alternative approach for the entrapment of protease to improve the catalytic efficiency, thermal stability and recycling efficiency. Int J Biol Macromol 2018; 111:917-922. [DOI: 10.1016/j.ijbiomac.2018.01.105] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2017] [Revised: 01/05/2018] [Accepted: 01/16/2018] [Indexed: 01/12/2023]
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