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Identification of the cellulose-binding domain of the cellulosome subunit S1 from Clostridium thermocellum YS

  • Debbie M. Poole
  • , Ely Morag
  • , Raphael Lamed
  • , Edward A. Bayer
  • , Geoffrey P. Hazlewood
  • , Harry J. Gilbert*
  • *Corresponding author for this work
  • Newcastle University
  • Tel Aviv University
  • Weizmann Institute of Science
  • Babraham Institute

Research output: Contribution to journalArticlepeer-review

74 Scopus citations

Abstract

The 3′ region of a gene designated cipB, which shows strong homology with cipA that encodes the cellulosome SL subunit of Clostridium thermocellum ATCC 27405, was isolated from a gene library of C. thermocellum strain YS. The truncated S1 protein encoded by the cipB derivative bound tightly to cellulose. The cellulose-binding domain in this polypeptide consisted of a C-terminal proximal 167 residue sequence which showed complete identity with residues 337-503 of mature SL from C. thermocellum strain ATCC 27405. The cellulose-binding domain interacted with both crystalline and amorphous cellulose, but not with xylan.

Original languageEnglish
Pages (from-to)181-186
Number of pages6
JournalFEMS Microbiology Letters
Volume99
Issue number2-3
DOIs
StatePublished - 1 Dec 1992

Funding

Funders
Agricultural anFodo d Re- searchC ouncil

    Keywords

    • Cellulase
    • Cellulose binding
    • Cellulosome
    • Clostridium thermocellum

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