Isolation and characterization of two cDNAs from Atlantic cod encoding two distinct psychrophilic elastases

Elín Gudmundsdóttir, Rémi Spilliaert, Qing Yang, Charles S. Craik, Jón B. Bjarnason, Águsta Gudmundsdóttir

Research output: Contribution to journalArticlepeer-review

Abstract

The cDNAs encoding two different Atlantic cod elastases have been isolated and sequenced. The predicted amino acid sequences revealed two preproelastases, consisting of a signal peptide, an activation peptide and a mature enzyme of 242 and 239 amino acids. Amino acid sequence identity between the two cod elastases was 60.1% and identity with mammalian elastases ranged from 50-64%. The two cod elastases contain all the major structural features common to serine proteases, such as the catalytic triad His57, Asp102 and Ser195. Both cod elastases have a high content of methionine, consistent with previous findings in psychrophilic fish enzymes.

Original languageEnglish
Pages (from-to)795-801
Number of pages7
JournalComparative Biochemistry and Physiology - B Biochemistry and Molecular Biology
Volume113
Issue number4
DOIs
Publication statusPublished - 1996

Other keywords

  • Atlantic cod
  • cDNA sequence
  • elastase
  • psychrophilic
  • serine protease

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