| Author | Camacho, Erika | |
| Author | Sanz, Libia | |
| Author | Escalante, Teresa | |
| Author | Pérez, Alicia | |
| Author | Villalta, Fabián | |
| Author | Lomonte, Bruno | |
| Author | Ferreira, Ana Gisele C. Neves | |
| Author | Feoli, Andrés | |
| Author | Calvete, Juan J. | |
| Author | Gutiérrez, José María | |
| Author | Rucavado, Alexandra | |
| Access date | 2017-03-13T13:26:02Z | |
| Available date | 2017-03-13T13:26:02Z | |
| Document date | 2016 | |
| Citation | CAMACHO, Erika; et al. Novel Catalytically-Inactive PII Metalloproteinases from a Viperid Snake Venom with Substitutions in the Canonical Zinc-Binding Motif. Toxins (Basel), v.8, n.10:292,18 p, 2016. | pt_BR |
| ISSN | 2072-6651 | pt_BR |
| URI | https://www.arca.fiocruz.br/handle/icict/18016 | |
| Language | eng | pt_BR |
| Publisher | MDPI | pt_BR |
| Rights | open access | |
| Subject in Portuguese | Metaloproteinases de veneno de cobra | pt_BR |
| Subject in Portuguese | Domínio da desintegração | pt_BR |
| Subject in Portuguese | Motivo de ligação ao zinco | pt_BR |
| Subject in Portuguese | Atividade hemorrágica | pt_BR |
| Subject in Portuguese | Agregação de plaquetas | pt_BR |
| Subject in Portuguese | Atividade de proteinase | pt_BR |
| Title | Novel Catalytically-Inactive PII Metalloproteinases from a Viperid Snake Venom with Substitutions in the Canonical Zinc-Binding Motif | pt_BR |
| Type | Article | pt_BR |
| DOI | 10.3390/toxins8100292 | |
| Abstract | Snake venom metalloproteinases (SVMPs) play key biological roles in prey immobilization and digestion. The majority of these activities depend on the hydrolysis of relevant protein substrates in the tissues. Hereby, we describe several isoforms and a cDNA clone sequence, corresponding to PII SVMP homologues from the venom of the Central American pit viper Bothriechis lateralis, which have modifications in the residues of the canonical sequence of the zinc-binding motif HEXXHXXGXXH. As a consequence, the proteolytic activity of the isolated proteins was undetectable when tested on azocasein and gelatin. These PII isoforms comprise metalloproteinase and disintegrin domains in the mature protein, thus belonging to the subclass PIIb of SVMPs. PII SVMP homologues were devoid of hemorrhagic and in vitro coagulant activities, effects attributed to the enzymatic activity of SVMPs, but induced a mild edema. One of the isoforms presents the characteristic RGD sequence in the disintegrin domain and inhibits ADP- and collagen-induced platelet aggregation. Catalytically-inactive SVMP homologues may have been hitherto missed in the characterization of snake venoms. The presence of such enzymatically-inactive homologues in snake venoms and their possible toxic and adaptive roles deserve further investigation. | pt_BR |
| Affilliation | Universidad de Costa Rica. Instituto Clodomiro Picado. Facultad de Microbiologia. San Jose, Costa, Rica. | pt_BR |
| Affilliation | Instituto de Biomedicina de Valencia. Consejo Superior de Investigaciones Científicas. Valencia, Spain. | pt_BR |
| Affilliation | Universidad de Costa Rica. Instituto Clodomiro Picado. Facultad de Microbiologia. San Jose, Costa, Rica. | pt_BR |
| Affilliation | Instituto de Biomedicina de Valencia. Consejo Superior de Investigaciones Científicas. Valencia, Spain. | pt_BR |
| Affilliation | Universidad de Costa Rica. Instituto Clodomiro Picado. Facultad de Microbiologia. San Jose, Costa, Rica. | pt_BR |
| Affilliation | Universidad de Costa Rica. Instituto Clodomiro Picado. Facultad de Microbiologia. San Jose, Costa, Rica. | pt_BR |
| Affilliation | Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Toxinologia. Rio de Janeiro, RJ. Brasil. | pt_BR |
| Affilliation | Universidad de Costa Rica. Instituto Clodomiro Picado. Facultad de Microbiologia. San Jose, Costa, Rica. | pt_BR |
| Affilliation | Instituto de Biomedicina de Valencia. Consejo Superior de Investigaciones Científicas. Valencia, Spain / Universidad Politécnica de Valencia. Departamento de Biotecnologia. Valencia, Spain. | pt_BR |
| Affilliation | Universidad de Costa Rica. Instituto Clodomiro Picado. Facultad de Microbiologia. San Jose, Costa, Rica. | pt_BR |
| Affilliation | Universidad de Costa Rica. Instituto Clodomiro Picado. Facultad de Microbiologia. San Jose, Costa, Rica. | pt_BR |
| Subject | snake venom metalloproteinases | pt_BR |
| Subject | PII SVMP homologues | pt_BR |
| Subject | disintegrin domain | pt_BR |
| Subject | zinc-binding motif | pt_BR |
| Subject | hemorrhagic activity | pt_BR |
| Subject | platelet aggregation | pt_BR |
| Subject | proteinase activity | pt_BR |
| e-ISSN | 2072-6651 | |
