1
|
Bijukumar S, Murugesan T, Dhanapal AR, Mubarak SJ, Vedagiri H, Jayaraman A. Construing recombinant ZFP160 from Aspergillus terreus as pterin deaminase enzyme. Biotechnol Appl Biochem 2023; 70:2150-2162. [PMID: 37766485 DOI: 10.1002/bab.2515] [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: 12/17/2022] [Accepted: 09/09/2023] [Indexed: 09/29/2023]
Abstract
Pterin deaminase stands as a metalloenzyme and exhibits both antitumor and anticancer activities. Therefore, this study aimed to explore the molecular function of zinc finger protein-160 (zfp160) from Aspergillus terreus with its enzyme mechanism in detail. Subsequently, preliminary molecular docking studies on zfp160 from A. terreus were done. Next, the cloning and expression of zfp160 protein were carried out. Following, protein expression was induced and purified through nickel NTA column with imidazole gradient elution. Through the Mascot search engine tool, the expressed protein of MALDI-TOF was confirmed by 32 kDa bands of SDS-PAGE. Furthermore, its enzymatic characterization and biochemical categorization were also explored. The optimum conditions for enzyme were determined to be pH 8, temperature 35°C, km 50 μm with folic acid as substrate, and Vmax of 24.16 (IU/mL). Further, in silico analysis tried to explore the interactions and binding affinity of various substrates to the modeled pterin deaminase from A. terreus. Our results revealed the binding mode of different substrate molecules with pterin deaminase using the approximate scoring functions that possibly correlate with actual experimental binding affinities. Following this, molecular dynamic simulations provided the in-depth knowledge on deciphering functional mechanisms of pterin deaminase over other drugs.
Collapse
Affiliation(s)
- Sajitha Bijukumar
- Cancer Therapeutics Laboratory, Department of Microbial Biotechnology, Bharathiar University, Coimbatore, Tamil Nadu, India
| | - Thandeeswaran Murugesan
- Bharathiar Cancer Theranostics Research Centre (BCTRC), RUSA2.0, Bharathiar University, Coimbatore, India
| | - Anand Raj Dhanapal
- Chemistry and Bioprospecting Division, Institute of Forest Genetics and Tree Breeding (IFGTB), Indian Council of Forestry Research and Education (ICFRE), Coimbatore, Tamil Nadu, India
| | - Shoufia Jabeen Mubarak
- Medical Genomics Laboratory, Department of Bioinformatics, Bharathiar University, Coimbatore, Tamil Nadu, India
| | - Hemamalini Vedagiri
- Medical Genomics Laboratory, Department of Bioinformatics, Bharathiar University, Coimbatore, Tamil Nadu, India
| | - Angayarkanni Jayaraman
- Cancer Therapeutics Laboratory, Department of Microbial Biotechnology, Bharathiar University, Coimbatore, Tamil Nadu, India
- Bharathiar Cancer Theranostics Research Centre (BCTRC), RUSA2.0, Bharathiar University, Coimbatore, India
| |
Collapse
|
2
|
Mali H, Shah C, Raghunandan BH, Prajapati AS, Patel DH, Trivedi U, Subramanian RB. Organophosphate pesticides an emerging environmental contaminant: Pollution, toxicity, bioremediation progress, and remaining challenges. J Environ Sci (China) 2023; 127:234-250. [PMID: 36522056 DOI: 10.1016/j.jes.2022.04.023] [Citation(s) in RCA: 58] [Impact Index Per Article: 58.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 04/19/2022] [Accepted: 04/19/2022] [Indexed: 06/17/2023]
Abstract
Organophosphates (OPs) are an integral part of modern agriculture; however, due to overexploitation, OPs pesticides residues are leaching and accumulating in the soil, and groundwater contaminated terrestrial and aquatic food webs. Acute exposure to OPs could produce toxicity in insects, plants, animals, and humans. OPs are known for covalent inhibition of acetylcholinesterase enzyme in pests and terrestrial/aquatic organisms, leading to nervous, respiratory, reproductive, and hepatic abnormalities. OPs pesticides also disrupt the growth-promoting machinery in plants by inhibiting key enzymes, permeability, and trans-cuticular diffusion, which is crucial for plant growth. Excessive use of OPs, directly/indirectly affecting human/environmental health, raise a thoughtful global concern. Developing a safe, reliable, economical, and eco-friendly methods for removing OPs pesticides from the environment is thus necessary. Bioremediation techniques coupled with microbes or microbial-biocatalysts are emerging as promising antidotes for OPs pesticides. Here, we comprehensively review the current scenario of OPs pollution, their toxicity (at a molecular level), and the recent advancements in biotechnology (modified biocatalytic systems) for detection, decontamination, and bioremediation of OP-pesticides in polluted environments. Furthermore, the review focuses on onsite applications of OPs degrading enzymes (immobilizations/biosensors/others), and it also highlights remaining challenges with future approaches.
Collapse
Affiliation(s)
- Himanshu Mali
- P. G. Department of Biosciences, UGC-Centre of Advanced Studies, Satellite Campus, Sardar Patel University, Sardar Patel Maidan, Bakrol-Vadtal Road, Bakrol 388 315, Gujarat, India
| | - Chandni Shah
- P. G. Department of Biosciences, UGC-Centre of Advanced Studies, Satellite Campus, Sardar Patel University, Sardar Patel Maidan, Bakrol-Vadtal Road, Bakrol 388 315, Gujarat, India
| | - B H Raghunandan
- P. G. Department of Biosciences, UGC-Centre of Advanced Studies, Satellite Campus, Sardar Patel University, Sardar Patel Maidan, Bakrol-Vadtal Road, Bakrol 388 315, Gujarat, India
| | - Anil S Prajapati
- P. G. Department of Biosciences, UGC-Centre of Advanced Studies, Satellite Campus, Sardar Patel University, Sardar Patel Maidan, Bakrol-Vadtal Road, Bakrol 388 315, Gujarat, India
| | - Darshan H Patel
- Charotar Institute of Paramedical Sciences, Charotar University of Science and Technology, (CHARUSAT), Changa 388421, Gujarat, India
| | - Ujjval Trivedi
- P. G. Department of Biosciences, UGC-Centre of Advanced Studies, Satellite Campus, Sardar Patel University, Sardar Patel Maidan, Bakrol-Vadtal Road, Bakrol 388 315, Gujarat, India
| | - R B Subramanian
- P. G. Department of Biosciences, UGC-Centre of Advanced Studies, Satellite Campus, Sardar Patel University, Sardar Patel Maidan, Bakrol-Vadtal Road, Bakrol 388 315, Gujarat, India.
| |
Collapse
|
3
|
Shah C, Mali H, Mesara S, Dhameliya H, Subramanian RB. Combined inoculation of phosphate solubilizing bacteria with mycorrhizae to alleviate the phosphate deficiency in Banana. Biologia (Bratisl) 2022. [DOI: 10.1007/s11756-022-01105-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
|
4
|
Mali H, Shah C, Rudakiya DM, Patel DH, Trivedi U, Subramanian RB. A novel organophosphate hydrolase from Arthrobacter sp. HM01: Characterization and applications. BIORESOURCE TECHNOLOGY 2022; 349:126870. [PMID: 35192947 DOI: 10.1016/j.biortech.2022.126870] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 02/14/2022] [Accepted: 02/16/2022] [Indexed: 06/14/2023]
Abstract
Bioremediation systems coupled to efficient microbial enzymes have emerged as an attractive approach for the in-situ removal of hazardous organophosphates (OPs) pesticides from the polluted environment. However, the role of engineered enzymes in OPs-degradation is rarely studied. In this study, the potential OPs-hydrolase (opdH) gene (Arthrobacter sp. HM01) was isolated, cloned, expressed, and purified. The recombinant organophosphate hydrolase (ropdH) was ∼29 kDa; which catalyzed a broad-range of OPs-pesticides in organic-solvent (∼99 % in 30 min), and was found to increase the catalytic efficiency by 10-folds over the native enzyme (kcat/Km: 107 M-1s-1). The degraded metabolites were analyzed using HPLC/GCMS. Through site-directed mutagenesis, it was confirmed that, conserved metal-bridged residue (Lys-127), plays a crucial role in OPs-degradation, which shows ∼18-folds decline in OPs-degradation. Furthermore, the catalytic activity and its stability has been enhanced by >2.0-fold through biochemical optimization. Thus, the study suggests that ropdH has all the required properties for OPs bioremediation.
Collapse
Affiliation(s)
- Himanshu Mali
- P. G. Department of Biosciences, UGC-Centre of Advanced Studies, Satellite Campus, Sardar Patel University, Sardar Patel Maidan, Bakrol-Vadtal Road, Bakrol, Gujarat 388 315, India
| | - Chandni Shah
- P. G. Department of Biosciences, UGC-Centre of Advanced Studies, Satellite Campus, Sardar Patel University, Sardar Patel Maidan, Bakrol-Vadtal Road, Bakrol, Gujarat 388 315, India
| | - Darshan M Rudakiya
- Synergy Cignpost Diagnostics, 3 Mills Studio, London, E3 3DU, United Kingdom
| | - Darshan H Patel
- Charotar Institute of Paramedical Sciences, Charotar University of Science and Technology, (CHARUSAT), Changa, Gujarat 388421, India
| | - Ujjval Trivedi
- P. G. Department of Biosciences, UGC-Centre of Advanced Studies, Satellite Campus, Sardar Patel University, Sardar Patel Maidan, Bakrol-Vadtal Road, Bakrol, Gujarat 388 315, India
| | - R B Subramanian
- P. G. Department of Biosciences, UGC-Centre of Advanced Studies, Satellite Campus, Sardar Patel University, Sardar Patel Maidan, Bakrol-Vadtal Road, Bakrol, Gujarat 388 315, India.
| |
Collapse
|
5
|
Mali H, Shah C, Patel DH, Trivedi U, Subramanian RB. Degradation insight of organophosphate pesticide chlorpyrifos through novel intermediate 2,6-dihydroxypyridine by Arthrobacter sp. HM01. BIORESOUR BIOPROCESS 2022; 9:31. [PMID: 38647761 PMCID: PMC10992969 DOI: 10.1186/s40643-022-00515-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 03/07/2022] [Indexed: 02/05/2023] Open
Abstract
Organophosphates (OPs) are hazardous pesticides, but an indispensable part of modern agriculture; collaterally contaminating agricultural soil and surrounding water. They have raised serious food safety and environmental toxicity that adversely affect the terrestrial and aquatic ecosystems and therefore, it become essential to develop a rapid bioremediation technique for restoring the pristine environment. A newly OPs degrading Arthrobacter sp. HM01 was isolated from pesticide-contaminated soil and identified by a ribotyping (16S rRNA) method. Genus Arthrobacter has not been previously reported in chlorpyrifos (CP) degradation, which shows 99% CP (100 mg L-1) degradation within 10 h in mMSM medium and also shows tolerance to a high concentration (1000 mg L-1) of CP. HM01 utilized a broad range of OPs pesticides and other aromatic pollutants including intermediates of CP degradation as sole carbon sources. The maximum CP degradation was obtained at pH 7 and 32 °C. During the degradation, a newly identified intermediate 2,6-dihydroxypyridine was detected through TLC/HPLC/LCMS analysis and a putative pathway was proposed for its degradation. The study also revealed that the organophosphate hydrolase (opdH) gene was responsible for CP degradation, and the opdH-enzyme was located intracellularly. The opdH enzyme was characterized from cell free extract for its optimum pH and temperature requirement, which was 7.0 and 50 °C, respectively. Thus, the results revealed the true potential of HM01 for OPs-bioremediation. Moreover, the strain HM01 showed the fastest rate of CP degradation, among the reported Arthrobacter sp.
Collapse
Affiliation(s)
- Himanshu Mali
- P. G. Department of Biosciences, UGC-Centre of Advanced Studies, Satellite Campus, Sardar Patel University, Sardar Patel Maidan, Bakrol-Vadtal Road, Bakrol, 388 315, Gujarat, India
| | - Chandni Shah
- P. G. Department of Biosciences, UGC-Centre of Advanced Studies, Satellite Campus, Sardar Patel University, Sardar Patel Maidan, Bakrol-Vadtal Road, Bakrol, 388 315, Gujarat, India
| | - Darshan H Patel
- Charotar Institute of Paramedical Sciences, Charotar University of Science and Technology (CHARUSAT), Changa, 388421, Gujarat, India
| | - Ujjval Trivedi
- P. G. Department of Biosciences, UGC-Centre of Advanced Studies, Satellite Campus, Sardar Patel University, Sardar Patel Maidan, Bakrol-Vadtal Road, Bakrol, 388 315, Gujarat, India
| | - R B Subramanian
- P. G. Department of Biosciences, UGC-Centre of Advanced Studies, Satellite Campus, Sardar Patel University, Sardar Patel Maidan, Bakrol-Vadtal Road, Bakrol, 388 315, Gujarat, India.
| |
Collapse
|
6
|
Mali H, Shah C, Patel DH, Trivedi U, Subramanian RB. Bio-catalytic system of metallohydrolases for remediation of neurotoxin organophosphates and applications with a future vision. J Inorg Biochem 2022; 231:111771. [DOI: 10.1016/j.jinorgbio.2022.111771] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 02/15/2022] [Accepted: 02/19/2022] [Indexed: 12/29/2022]
|