Molecular and Functional Characterization of Polynucleotide Phosphorylase from the Antarctic Eubacterium Pseudoalteromonas haloplanktis

G.      Evangelista; P.      Falasca; I.      Ruggiero; M.      Masullo; G.      Raimo

doi:10.2174/092986609789055296

Abstract

Polyribonucleotide phosphorilase from the psychrophilic Antarctic eubacterium Pseudoalteromonas haloplanktis (PhPNPase) has been purified. This enzyme catalyzes both the RNA polymerisation and degradation reaction, showing the highest activity at temperatures below 40°C. PhPNPase is quite sensitive to heat treatment and it is endowed with remarkable halotolerance.

Keywords: RNA metabolism, cold adapted enzymes, activity-stability relationship

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Protein & Peptide Letters

Title: Molecular and Functional Characterization of Polynucleotide Phosphorylase from the Antarctic Eubacterium Pseudoalteromonas haloplanktis

Volume: 16 Issue: 9

Author(s): G. Evangelista, P. Falasca, I. Ruggiero, M. Masullo and G. Raimo

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Keywords: RNA metabolism, cold adapted enzymes, activity-stability relationship

Abstract: Polyribonucleotide phosphorilase from the psychrophilic Antarctic eubacterium Pseudoalteromonas haloplanktis (PhPNPase) has been purified. This enzyme catalyzes both the RNA polymerisation and degradation reaction, showing the highest activity at temperatures below 40°C. PhPNPase is quite sensitive to heat treatment and it is endowed with remarkable halotolerance.

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Evangelista G., Falasca P., Ruggiero I., Masullo M. and Raimo G., Molecular and Functional Characterization of Polynucleotide Phosphorylase from the Antarctic Eubacterium Pseudoalteromonas haloplanktis, Protein & Peptide Letters 2009; 16 (9) . https://dx.doi.org/10.2174/092986609789055296