Crystallization and preliminary X-ray studies on the core proteins of cellobiohydrolase I and endoglucanase I from Trichoderma reesei

Christina Divne, Irmgard Sinning, Jerry Ståhlberg, Göran Pettersson, Michael Bailey, Matti Siika-aho, Emilio Margolles-Clark, Tuula Teeri, Alwyn Jones

    Research output: Contribution to journalArticleScientificpeer-review

    21 Citations (Scopus)

    Abstract

    The catalytic core domains of cellobiohydrolase I (CBHI) and endoglucanase I (EGI) from Trichoderma reesei have been crystallized using the hanging drop vapour diffusion method. In the case of CBHI, use of polyethylene glycol 20,000, and calcium chloride at low pH produced good quality single crystals suitable for X-ray studies. The crystals belong to a primitive orthorhombic space group with unit cell dimensions a = 84·0 Å, b = 86·2 Å, c = 111·8 Å, and diffract beyond 2·0 Å resolution. Bipyramidal crystals of EGI core were grown from ammonium sulphate at pH 7·5. The crystals are tetragonal, either P 4122 or the enantiomorph P4322, with cell dimensions a = b = 101·8 Å and c = 198·0 Å, and at best diffract to a resolution of 2·5 Å.

    Original languageEnglish
    Pages (from-to)905 - 907
    Number of pages3
    JournalJournal of Molecular Biology
    Volume234
    Issue number3
    DOIs
    Publication statusPublished - 1993
    MoE publication typeA1 Journal article-refereed

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