Purification and functional characterization of two fibrinogenolytic enzymes from Bothrops alternatus venom
Two fibrinogenolytic enzymes, Bothrops alternatus metalloprotease isoform (BaltMP)-I and II, were purified from Bothrops alternatus venom using Diethylaminoethyl (DEAE) Sephacel, Sephadex G-75 and Heparin-Agarose column chromatography. Purified BaltMP-I and II ran as single protein bands on analytic...
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ftdoajarticles:oai:doaj.org/article:6fb72fe992b64298915b9eb097080460 2023-05-15T15:08:24+02:00 Purification and functional characterization of two fibrinogenolytic enzymes from Bothrops alternatus venom J. O. Costa C. B. Petric A. Hamaguchi M. I. Homsi-Brandeburgo C. Z. Oliveira A. M. Soares F. Oliveira 2007-01-01T00:00:00Z https://doi.org/10.1590/S1678-91992007000300007 https://doaj.org/article/6fb72fe992b64298915b9eb097080460 EN eng SciELO http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992007000300007 https://doaj.org/toc/1678-9199 doi:10.1590/S1678-91992007000300007 1678-9199 https://doaj.org/article/6fb72fe992b64298915b9eb097080460 Journal of Venomous Animals and Toxins including Tropical Diseases, Vol 13, Iss 3, Pp 640-654 (2007) snake venom Bothrops alternatus metalloproteases functional characterization fibrinogenolytic activity defibrinogenation in vivo Arctic medicine. Tropical medicine RC955-962 Toxicology. Poisons RA1190-1270 Zoology QL1-991 article 2007 ftdoajarticles https://doi.org/10.1590/S1678-91992007000300007 2022-12-30T21:14:53Z Two fibrinogenolytic enzymes, Bothrops alternatus metalloprotease isoform (BaltMP)-I and II, were purified from Bothrops alternatus venom using Diethylaminoethyl (DEAE) Sephacel, Sephadex G-75 and Heparin-Agarose column chromatography. Purified BaltMP-I and II ran as single protein bands on analytical polyacrylamide gel electrophoresis and showed molecular weights of 29000 and 36000, respectively, under reducing conditions in sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE). BaltMP-II, but not BaltMP-I, displayed blood-clotting activity in bovine plasma, which was about 10-fold higher than that of the crude venom. Both enzymes were proteolytically active against bovine fibrinogen as substrate. When fibrinogen and each enzyme were incubated at 37°C, at a ratio of 1:100 (w/w), BaltMP-II cleaved preferentially the Aalpha -chain and more slowly the Bbeta -chain. The action of BaltMP-I was similar, but lower. None of the proteases degraded the gamma-chain of fibrinogen. The fibrinogenolytic activity of the enzymes was inhibited by 1,10-phenanthroline, suggesting they are metalloproteases. Since both enzymes were found to cause defibrinogenation when intraperitoneally (i.p.) administered to mice, they can be of medical interest as a therapeutic agent in the treatment and prevention of arterial thrombosis. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Journal of Venomous Animals and Toxins including Tropical Diseases 13 3 |
institution |
Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
snake venom Bothrops alternatus metalloproteases functional characterization fibrinogenolytic activity defibrinogenation in vivo Arctic medicine. Tropical medicine RC955-962 Toxicology. Poisons RA1190-1270 Zoology QL1-991 |
spellingShingle |
snake venom Bothrops alternatus metalloproteases functional characterization fibrinogenolytic activity defibrinogenation in vivo Arctic medicine. Tropical medicine RC955-962 Toxicology. Poisons RA1190-1270 Zoology QL1-991 J. O. Costa C. B. Petric A. Hamaguchi M. I. Homsi-Brandeburgo C. Z. Oliveira A. M. Soares F. Oliveira Purification and functional characterization of two fibrinogenolytic enzymes from Bothrops alternatus venom |
topic_facet |
snake venom Bothrops alternatus metalloproteases functional characterization fibrinogenolytic activity defibrinogenation in vivo Arctic medicine. Tropical medicine RC955-962 Toxicology. Poisons RA1190-1270 Zoology QL1-991 |
description |
Two fibrinogenolytic enzymes, Bothrops alternatus metalloprotease isoform (BaltMP)-I and II, were purified from Bothrops alternatus venom using Diethylaminoethyl (DEAE) Sephacel, Sephadex G-75 and Heparin-Agarose column chromatography. Purified BaltMP-I and II ran as single protein bands on analytical polyacrylamide gel electrophoresis and showed molecular weights of 29000 and 36000, respectively, under reducing conditions in sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE). BaltMP-II, but not BaltMP-I, displayed blood-clotting activity in bovine plasma, which was about 10-fold higher than that of the crude venom. Both enzymes were proteolytically active against bovine fibrinogen as substrate. When fibrinogen and each enzyme were incubated at 37°C, at a ratio of 1:100 (w/w), BaltMP-II cleaved preferentially the Aalpha -chain and more slowly the Bbeta -chain. The action of BaltMP-I was similar, but lower. None of the proteases degraded the gamma-chain of fibrinogen. The fibrinogenolytic activity of the enzymes was inhibited by 1,10-phenanthroline, suggesting they are metalloproteases. Since both enzymes were found to cause defibrinogenation when intraperitoneally (i.p.) administered to mice, they can be of medical interest as a therapeutic agent in the treatment and prevention of arterial thrombosis. |
format |
Article in Journal/Newspaper |
author |
J. O. Costa C. B. Petric A. Hamaguchi M. I. Homsi-Brandeburgo C. Z. Oliveira A. M. Soares F. Oliveira |
author_facet |
J. O. Costa C. B. Petric A. Hamaguchi M. I. Homsi-Brandeburgo C. Z. Oliveira A. M. Soares F. Oliveira |
author_sort |
J. O. Costa |
title |
Purification and functional characterization of two fibrinogenolytic enzymes from Bothrops alternatus venom |
title_short |
Purification and functional characterization of two fibrinogenolytic enzymes from Bothrops alternatus venom |
title_full |
Purification and functional characterization of two fibrinogenolytic enzymes from Bothrops alternatus venom |
title_fullStr |
Purification and functional characterization of two fibrinogenolytic enzymes from Bothrops alternatus venom |
title_full_unstemmed |
Purification and functional characterization of two fibrinogenolytic enzymes from Bothrops alternatus venom |
title_sort |
purification and functional characterization of two fibrinogenolytic enzymes from bothrops alternatus venom |
publisher |
SciELO |
publishDate |
2007 |
url |
https://doi.org/10.1590/S1678-91992007000300007 https://doaj.org/article/6fb72fe992b64298915b9eb097080460 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Journal of Venomous Animals and Toxins including Tropical Diseases, Vol 13, Iss 3, Pp 640-654 (2007) |
op_relation |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992007000300007 https://doaj.org/toc/1678-9199 doi:10.1590/S1678-91992007000300007 1678-9199 https://doaj.org/article/6fb72fe992b64298915b9eb097080460 |
op_doi |
https://doi.org/10.1590/S1678-91992007000300007 |
container_title |
Journal of Venomous Animals and Toxins including Tropical Diseases |
container_volume |
13 |
container_issue |
3 |
_version_ |
1766339775882592256 |