Comprehensive Analysis of a Vibrio parahaemolyticus Strain Extracellular Serine Protease VpSP37

PLoS One. 2015 Jul 10;10(7):e0126349. doi: 10.1371/journal.pone.0126349. eCollection 2015.

Abstract

Proteases play an important role in the field of tissue dissociation combined with regenerative medicine. During the years new sources of proteolytic enzymes have been studied including proteases from different marine organisms both eukaryotic and prokaryotic. Herein we have purified a secreted component of an isolate of Vibrio parahaemolyticus, with electrophoretic mobilities corresponding to 36 kDa, belonging to the serine proteases family. Sequencing of the N-terminus enabled the in silico identification of the whole primary structure consisting of 345 amino acid residues with a calculated molecular mass of 37.4 KDa. The purified enzyme, named VpSP37, contains a Serine protease domain between residues 35 and 276 and a canonical Trypsin/Chimotrypsin 3D structure. Functional assays were performed to evaluate protease activity of purified enzyme. Additionally the performance of VpSP37 was evaluated in tissue dissociations experiments and the use of such enzyme as a component of enzyme blend for tissue dissociation procedures is strongly recommended.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amino Acid Sequence
  • Animals
  • Eels / microbiology
  • Models, Molecular
  • Molecular Sequence Data
  • Sequence Alignment
  • Serine Proteases / chemistry*
  • Serine Proteases / metabolism
  • Substrate Specificity
  • Vibrio Infections / microbiology
  • Vibrio Infections / veterinary
  • Vibrio parahaemolyticus / chemistry
  • Vibrio parahaemolyticus / enzymology*
  • Vibrio parahaemolyticus / metabolism

Substances

  • Serine Proteases

Grants and funding

Funds were provided by PON MIUR Project “Technologies and processes for an improved shelf-life of products in the agro-food industry through the use of innovative edible pectin films” by A. Cuttitta.