Skip to main navigation Skip to search Skip to main content

Protein engineering for thermostabilization of proteins: some theoretical rules and application to a β-glucanase

  • E Querol
  • , J Pons
  • , J Cedano
  • , M Vallmitjana
  • , F García
  • , C Bonet
  • , J Pérez-Pons
  • , A Planas
  • , A Mozo-Villarías

Research output: Book chapterConference contributionpeer-review

Abstract

Protein thermostability has been investigated by two approaches. (A) Computational. To study the relationship between thermostability and conformational characteristics of proteins, 195 single amino acid residue replacements have been analysed for several protein conformational characteristics. From the analyses, some general rules arise which suggest where amino acid substitutions can be made to enhance protein thermostability. (B) Experimental. Glucohydrolases are biotechnologically important enzymes. We are analysing by site directed mutagenesis the structure/function relationship of two bacterial glucohydrolases, a 1,3-1,4-beta-glucauase and a beta-glucosidase. We have determined the key residues for catalysis and substrate binding, and redesigned the stability and specificity of the glucanase. A glucanase thermorresistant mutant (N57A) has been obtained.
Original languageEnglish
Title of host publicationStability And Stabilization Of Biocatalysts
EditorsA Ballesteros, FJ Plou, JL Iborra, PJ Halling
PublisherElsevier
Pages303-310
Number of pages8
Volume15
ISBN (Print)0-444-82970-9
Publication statusPublished - 1998
Externally publishedYes
EventInternational Symposium on the Stability and Stabilization of Biocatalysts - CORDOBA, Spain
Duration: 19 Apr 199822 Apr 1998

Publication series

NameProgress In Biotechnology

Conference

ConferenceInternational Symposium on the Stability and Stabilization of Biocatalysts
Country/TerritorySpain
CityCORDOBA
Period19/04/9822/04/98

Keywords

  • Site-directed mutagenesis
  • Licheniformis 1,3-1,4-beta-d-glucan 4-glucanohydrolase
  • Bacillus-licheniformis
  • Thermal-stability
  • Disulfide bond
  • Inactivation
  • Stabilization
  • Residues
  • Binding
  • Loop

Fingerprint

Dive into the research topics of 'Protein engineering for thermostabilization of proteins: some theoretical rules and application to a β-glucanase'. Together they form a unique fingerprint.

Cite this