Two glucuronoyl esterases of Phanerochaete chrysosporium

TY - JOUR

T1 - Two glucuronoyl esterases of Phanerochaete chrysosporium

AU - Duranová, Miroslava

AU - Spániková, Silvia

AU - Wösten, Han A B

AU - Biely, Peter

AU - de Vries, Ronald P

PY - 2009/2

Y1 - 2009/2

N2 - The white-rot fungus Phanerochaete chrysosporium produces glucuronoyl esterase, a recently discovered carbohydrate esterase, during growth on sugar beet pulp. Two putative genes encoding this enzyme, ge1 and ge2, were isolated and cloned. Heterologous expression in Aspergillus vadensis, Pycnoporus cinnabarinus and Schizophyllum commune resulted in extracellular glucuronoyl esterase activity, demonstrating that these genes encode this enzymatic function. The amino acid sequence of GE1 was used to identify homologous genes in the genomes of twenty-four fungi. Approximately half of the genomes, both from ascomycetes and basidiomycetes, contained putative orthologues, but their presence could not be assigned to any of fungal class or subclass. Comparison of the amino acid sequences of identified and putative glucuronoyl esterases to other types of carbohydrate esterases (CE) confirmed that they form a separate family of CEs. These enzymes are interesting candidates for biotechnological applications such as the separation of lignin and hemicellulose.

AB - The white-rot fungus Phanerochaete chrysosporium produces glucuronoyl esterase, a recently discovered carbohydrate esterase, during growth on sugar beet pulp. Two putative genes encoding this enzyme, ge1 and ge2, were isolated and cloned. Heterologous expression in Aspergillus vadensis, Pycnoporus cinnabarinus and Schizophyllum commune resulted in extracellular glucuronoyl esterase activity, demonstrating that these genes encode this enzymatic function. The amino acid sequence of GE1 was used to identify homologous genes in the genomes of twenty-four fungi. Approximately half of the genomes, both from ascomycetes and basidiomycetes, contained putative orthologues, but their presence could not be assigned to any of fungal class or subclass. Comparison of the amino acid sequences of identified and putative glucuronoyl esterases to other types of carbohydrate esterases (CE) confirmed that they form a separate family of CEs. These enzymes are interesting candidates for biotechnological applications such as the separation of lignin and hemicellulose.

KW - Cloning, Molecular

KW - Esterases

KW - Fungal Proteins

KW - Fungi

KW - Gene Expression

KW - Molecular Sequence Data

KW - Phanerochaete

KW - Phylogeny

KW - Substrate Specificity

U2 - 10.1007/s00203-008-0434-y

DO - 10.1007/s00203-008-0434-y

M3 - Article

C2 - 18854978

SN - 0302-8933

VL - 191

SP - 133

EP - 140

JO - Archives of Microbiology

JF - Archives of Microbiology

IS - 2

ER -