Excellency of pyrimidinyl moieties containing α-aminophosphonates over benzthiazolyl moieties for thermal and structural stability of stem bromelain
Autor: | Murali Sudileti, Pannuru Venkatesu, Sumit Kuma, Gundluru Mohan, Cirandur Suresh Reddy, C. Sridevi |
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Rok vydání: | 2020 |
Předmět: |
Circular dichroism
Pyrimidine Phosphorous Acids 02 engineering and technology Ring (chemistry) Biochemistry Catalysis 03 medical and health sciences chemistry.chemical_compound Structural Biology Enzyme Stability Benzothiazoles Molecular Biology 030304 developmental biology 0303 health sciences Hydrogen bond Circular Dichroism Temperature Graphitic carbon nitride Hydrogen Bonding General Medicine 021001 nanoscience & nanotechnology Bromelains Combinatorial chemistry Molecular Docking Simulation Pyrimidines Spectrometry Fluorescence chemistry Structural stability Stem bromelain Spectrophotometry Ultraviolet 0210 nano-technology |
Zdroj: | International Journal of Biological Macromolecules. 165:2010-2021 |
ISSN: | 0141-8130 |
DOI: | 10.1016/j.ijbiomac.2020.10.065 |
Popis: | An efficient approach has been made for the synthesis of a series of novel di α-aminophosphonates by the reaction of terephthalaldehyde with various pyrimidine/benzthiazole amines and diethyl phosphite using sulfonated graphitic carbon nitride – SA@g-C3N4 as catalyst under room temperature and solvent free conditions. Later, the different effects of these newly synthesized α-aminophosphonates as a function of concentration gradient has been scrutinized on the thermal and structural stability of stem bromelain (SBM) through combining the results of various spectroscopic techniques like UV–vis, steady state fluorescence and circular dichroism (CD). Lastly the competitive and distinctive behaviour of α-aminophosphonates towards the stability of SBM has been envisaged using molecular docking simulations which suggest that nature of α-aminophosphonates plays a crucial role for their interactions with SBM. Molecular docking results clearly show that α-aminophosphonates with pyrimidine ring are having more number of hydrogen bonding interaction with amino acid residues of SBM than α-aminophosphonates with benzthiazolyl ring. Sequentially for thermal and structure stability of SBM, concentration of α-aminophosphonates plays an inexorable role and through these results it must be concluded that most of the α-aminophosphonates are stabilizing the SBM upto the 0. 1 mM concentration. |
Databáze: | OpenAIRE |
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