The difference in affinity between two fungal cellulose-binding domains is dominated by a single amino acid substitution

Markus Linder , Gunnar Lindeberg, Tapani Reinikainen, Tuula T. Teeri, Göran Pettersson

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

Abstrakti

Cellulose-binding domains (CBDs) form distinct functional units of most cellulolytic enzymes. We have compared the cellulose-binding affinities of the CBDs of cellobiohydrolase I (CBHI) and endoglucanase I(EGI) from the fungus Trichoderma reesei. The CBD of EGI had significantly higher affinity than that of CBHI. Four variants of the CBHI CBD were made in order to identify the residues responsible for the increased affinity in EGI. Most of the difference could be ascribed to a replacement of a tyrosine by a tryptophan on the flat cellulose-binding face.

AlkuperäiskieliEnglanti
Sivut96-98
Sivumäärä3
JulkaisuFEBS Letters
Vuosikerta372
Numero1
DOI - pysyväislinkit
TilaJulkaistu - 18 syysk. 1995
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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