Enzymatic and biochemical characterization of Bungarus sindanus snake venom acetylcholinesterase
This study analyses venom from the elapid krait snake Bungarus sindanus, which contains a high level of acetylcholinesterase (AChE) activity. The enzyme showed optimum activity at alkaline pH (8.5) and 45ºC. Krait venom AChE was inhibited by substrate. Inhibition was significantly reduced by using a...
Published in: | Journal of Venomous Animals and Toxins including Tropical Diseases |
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ftdoajarticles:oai:doaj.org/article:65daff77fcbb485daa4c67ce88b7527f 2023-05-15T15:06:17+02:00 Enzymatic and biochemical characterization of Bungarus sindanus snake venom acetylcholinesterase M Ahmed N Latif RA Khan A Ahmad JBT Rocha CM Mazzanti MD Bagatini VM Morsch MRC Schetinger 2012-01-01T00:00:00Z https://doi.org/10.1590/S1678-91992012000200014 https://doaj.org/article/65daff77fcbb485daa4c67ce88b7527f EN eng SciELO http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992012000200014 https://doaj.org/toc/1678-9199 doi:10.1590/S1678-91992012000200014 1678-9199 https://doaj.org/article/65daff77fcbb485daa4c67ce88b7527f Journal of Venomous Animals and Toxins including Tropical Diseases, Vol 18, Iss 2, Pp 236-243 (2012) acetylcholinesterase inhibition krait ionic strength acetylthiocholine iodide Bungarus sindanus snake venom Arctic medicine. Tropical medicine RC955-962 Toxicology. Poisons RA1190-1270 Zoology QL1-991 article 2012 ftdoajarticles https://doi.org/10.1590/S1678-91992012000200014 2022-12-31T11:22:26Z This study analyses venom from the elapid krait snake Bungarus sindanus, which contains a high level of acetylcholinesterase (AChE) activity. The enzyme showed optimum activity at alkaline pH (8.5) and 45ºC. Krait venom AChE was inhibited by substrate. Inhibition was significantly reduced by using a high ionic strength buffer; low ionic strength buffer (10 mM PO4 pH 7.5) inhibited the enzyme by 1. 5mM AcSCh, while high ionic strength buffer (62 mM PO4 pH 7.5) inhibited it by 1 mM AcSCh. Venom acetylcholinesterase was also found to be thermally stable at 45ºC; it only lost 5% of its activity after incubation at 45ºC for 40 minutes. The Michaelis-Menten constant (Km) for acetylthiocholine iodide hydrolysis was found to be 0.068 mM. Krait venom acetylcholinesterase was also inhibited by ZnCl2, CdCl2, and HgCl2 in a concentrationdependent manner. Due to the elevated levels of AChE with high catalytic activity and because it is more stable than any other sources, Bungarus sindanus venom is highly valuable for biochemical studies of this enzyme. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Journal of Venomous Animals and Toxins including Tropical Diseases 18 2 236 243 |
institution |
Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
acetylcholinesterase inhibition krait ionic strength acetylthiocholine iodide Bungarus sindanus snake venom Arctic medicine. Tropical medicine RC955-962 Toxicology. Poisons RA1190-1270 Zoology QL1-991 |
spellingShingle |
acetylcholinesterase inhibition krait ionic strength acetylthiocholine iodide Bungarus sindanus snake venom Arctic medicine. Tropical medicine RC955-962 Toxicology. Poisons RA1190-1270 Zoology QL1-991 M Ahmed N Latif RA Khan A Ahmad JBT Rocha CM Mazzanti MD Bagatini VM Morsch MRC Schetinger Enzymatic and biochemical characterization of Bungarus sindanus snake venom acetylcholinesterase |
topic_facet |
acetylcholinesterase inhibition krait ionic strength acetylthiocholine iodide Bungarus sindanus snake venom Arctic medicine. Tropical medicine RC955-962 Toxicology. Poisons RA1190-1270 Zoology QL1-991 |
description |
This study analyses venom from the elapid krait snake Bungarus sindanus, which contains a high level of acetylcholinesterase (AChE) activity. The enzyme showed optimum activity at alkaline pH (8.5) and 45ºC. Krait venom AChE was inhibited by substrate. Inhibition was significantly reduced by using a high ionic strength buffer; low ionic strength buffer (10 mM PO4 pH 7.5) inhibited the enzyme by 1. 5mM AcSCh, while high ionic strength buffer (62 mM PO4 pH 7.5) inhibited it by 1 mM AcSCh. Venom acetylcholinesterase was also found to be thermally stable at 45ºC; it only lost 5% of its activity after incubation at 45ºC for 40 minutes. The Michaelis-Menten constant (Km) for acetylthiocholine iodide hydrolysis was found to be 0.068 mM. Krait venom acetylcholinesterase was also inhibited by ZnCl2, CdCl2, and HgCl2 in a concentrationdependent manner. Due to the elevated levels of AChE with high catalytic activity and because it is more stable than any other sources, Bungarus sindanus venom is highly valuable for biochemical studies of this enzyme. |
format |
Article in Journal/Newspaper |
author |
M Ahmed N Latif RA Khan A Ahmad JBT Rocha CM Mazzanti MD Bagatini VM Morsch MRC Schetinger |
author_facet |
M Ahmed N Latif RA Khan A Ahmad JBT Rocha CM Mazzanti MD Bagatini VM Morsch MRC Schetinger |
author_sort |
M Ahmed |
title |
Enzymatic and biochemical characterization of Bungarus sindanus snake venom acetylcholinesterase |
title_short |
Enzymatic and biochemical characterization of Bungarus sindanus snake venom acetylcholinesterase |
title_full |
Enzymatic and biochemical characterization of Bungarus sindanus snake venom acetylcholinesterase |
title_fullStr |
Enzymatic and biochemical characterization of Bungarus sindanus snake venom acetylcholinesterase |
title_full_unstemmed |
Enzymatic and biochemical characterization of Bungarus sindanus snake venom acetylcholinesterase |
title_sort |
enzymatic and biochemical characterization of bungarus sindanus snake venom acetylcholinesterase |
publisher |
SciELO |
publishDate |
2012 |
url |
https://doi.org/10.1590/S1678-91992012000200014 https://doaj.org/article/65daff77fcbb485daa4c67ce88b7527f |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Journal of Venomous Animals and Toxins including Tropical Diseases, Vol 18, Iss 2, Pp 236-243 (2012) |
op_relation |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992012000200014 https://doaj.org/toc/1678-9199 doi:10.1590/S1678-91992012000200014 1678-9199 https://doaj.org/article/65daff77fcbb485daa4c67ce88b7527f |
op_doi |
https://doi.org/10.1590/S1678-91992012000200014 |
container_title |
Journal of Venomous Animals and Toxins including Tropical Diseases |
container_volume |
18 |
container_issue |
2 |
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236 |
op_container_end_page |
243 |
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1766337919115591680 |