As of August 2016 nine species are recognized as being valid. Nasulysin-1, a new zinc-metalloproteinase from the snake venom of the hognose pit viper Porthidium nasutum, was purified to homogeneity using molecular exclusion chromatography and high performance liquid chromatography on a reverse phase column. Porthidium nasutum, Porthidium ophryomegas and Cerrophidion sasai, formerly classified as Cerrophidion godmani. In addition, the immunorecognition of the components of these venoms was assessed by immunoaffinity … The present study analyzed the ability of this antivenom to neutralize the venoms of three Central American viperid species of the 'Porthidium group', i.e. Despite being common in certain areas, it can be difficult to see them due to their almost perfect camouflage. In this study, the venom proteomes of Porthidium nasutum, P. ophryomegas, and Cerrophidion godmani from Costa Rica were analyzed, and correlated to their toxic and enzymatic activities.

Porthidium is a genus of venomous pitvipers found in Mexico and southward to northern South America. This ghost of the forest is known as Rainforest hog-nosed viper (Porthidium nasutum). The name is derived from the Greek word portheo and the suffix -idus, which mean "destroy" and "having the nature of", apparently a reference to the venom. Nasulysin-1, a new zinc-metalloproteinase from the snake venom of the hognose pit viper Porthidium nasutum, was purified to homogeneity using molecular exclusion chromatography and high performance liquid chromatography on a reverse phase column.The molecular mass of the purified enzyme was 25,900 kDa and pI 4.1, as determined by 1D and 2D polyacrylamide gel electrophoresis. Their HPLC profiles revealed a higher similarity between the two Porthidium …