New Aspect of Oxalic Acid Biosynthesis in Biochemistry of Basidiomycetous Fungi
Erman Munir : New Aspect of Oxalic Acid Biosynthesis in Biochemistry of Basidiomycetous Fungi, 2004.
USU e-Repository©2008
New Aspect of Oxalic Acid Biosynthesis in Biochemistry
of Basidiomycetous Fungi
Erman Munir
Faculty of Mathematics and Natural Sciences, The University of North Sumatra
JI. Bioteknologi No. I Kampus USU Medan 20155 fndonesia
Abstract
It has been known as tile general physiological trail that wood-rotting basidiomycetes produce oxalic
acid 10 the culture media/environment and roles of oxalic acid in wood decay systems have been
rcrch1ing
ｭ ｾ ｣
altention for IllC last two decades. Then, effective conversion of glucose to oxalic acid
was found to be an important energy acquiring process in wood-rotting basidiomycetes. This paper
outlines the important role of new aspect of oxalic acid biosynthesis in biochemistry of
basidiomycetous fungi.
Keywords: Oxalic acid biosyntllesis, biochemistry of wood rotting fungi, wood-rotting fungi,
basidiomycetous fungi
Introduction
Enzymatic formations of oxalic acid in wood rotting fungi were known to be catalyzed
by glyoxylate dehydrogenase and oxaloacetase, The first enzyme oxidizes glyoxylate
to form oxalate and the latter hydrolyzes oxaloacetate yielding oxalate and acetate. Both
enzymes were previously studied in Professor Shimada laboratory, Wood Research
Institute, Kyoto University (Tokimatsu et al. 1998; Akamatsu et al. 1983). The enzymes
have reported to occur in a different kind of organisms including fungi, bacteria, plant
and algae. Importantly, because the precursors of oxalate (glyoxylate and oxaloacetate)
are the intermediates of the glyoxylate and tricarboxylic acid (TCA) cycles, it was
firstly hypothesized that oxalate acid biosynthesis coordinates with the glyoxylate and
TeA cycles. Nevertheless, none has been elucidated in detail about the intrinsic role of
oxalic acid biosynthesis in biochemistry of wood-rotting basidiomycetes in earlier
investigations, except in this study.
81
Erman Munir : New Aspect of Oxalic Acid Biosynthesis in Biochemistry of Basidiomycetous Fungi, 2004.
USU e-Repository©2008
Erman Munir : New Aspect of Oxalic Acid Biosynthesis in Biochemistry of Basidiomycetous Fungi, 2004.
USU e-Repository©2008
Erman Munir : New Aspect of Oxalic Acid Biosynthesis in Biochemistry of Basidiomycetous Fungi, 2004.
USU e-Repository©2008
Erman Munir : New Aspect of Oxalic Acid Biosynthesis in Biochemistry of Basidiomycetous Fungi, 2004.
USU e-Repository©2008
Erman Munir : New Aspect of Oxalic Acid Biosynthesis in Biochemistry of Basidiomycetous Fungi, 2004.
USU e-Repository©2008
Erman Munir : New Aspect of Oxalic Acid Biosynthesis in Biochemistry of Basidiomycetous Fungi, 2004.
USU e-Repository©2008
Erman Munir : New Aspect of Oxalic Acid Biosynthesis in Biochemistry of Basidiomycetous Fungi, 2004.
USU e-Repository©2008
USU e-Repository©2008
New Aspect of Oxalic Acid Biosynthesis in Biochemistry
of Basidiomycetous Fungi
Erman Munir
Faculty of Mathematics and Natural Sciences, The University of North Sumatra
JI. Bioteknologi No. I Kampus USU Medan 20155 fndonesia
Abstract
It has been known as tile general physiological trail that wood-rotting basidiomycetes produce oxalic
acid 10 the culture media/environment and roles of oxalic acid in wood decay systems have been
rcrch1ing
ｭ ｾ ｣
altention for IllC last two decades. Then, effective conversion of glucose to oxalic acid
was found to be an important energy acquiring process in wood-rotting basidiomycetes. This paper
outlines the important role of new aspect of oxalic acid biosynthesis in biochemistry of
basidiomycetous fungi.
Keywords: Oxalic acid biosyntllesis, biochemistry of wood rotting fungi, wood-rotting fungi,
basidiomycetous fungi
Introduction
Enzymatic formations of oxalic acid in wood rotting fungi were known to be catalyzed
by glyoxylate dehydrogenase and oxaloacetase, The first enzyme oxidizes glyoxylate
to form oxalate and the latter hydrolyzes oxaloacetate yielding oxalate and acetate. Both
enzymes were previously studied in Professor Shimada laboratory, Wood Research
Institute, Kyoto University (Tokimatsu et al. 1998; Akamatsu et al. 1983). The enzymes
have reported to occur in a different kind of organisms including fungi, bacteria, plant
and algae. Importantly, because the precursors of oxalate (glyoxylate and oxaloacetate)
are the intermediates of the glyoxylate and tricarboxylic acid (TCA) cycles, it was
firstly hypothesized that oxalate acid biosynthesis coordinates with the glyoxylate and
TeA cycles. Nevertheless, none has been elucidated in detail about the intrinsic role of
oxalic acid biosynthesis in biochemistry of wood-rotting basidiomycetes in earlier
investigations, except in this study.
81
Erman Munir : New Aspect of Oxalic Acid Biosynthesis in Biochemistry of Basidiomycetous Fungi, 2004.
USU e-Repository©2008
Erman Munir : New Aspect of Oxalic Acid Biosynthesis in Biochemistry of Basidiomycetous Fungi, 2004.
USU e-Repository©2008
Erman Munir : New Aspect of Oxalic Acid Biosynthesis in Biochemistry of Basidiomycetous Fungi, 2004.
USU e-Repository©2008
Erman Munir : New Aspect of Oxalic Acid Biosynthesis in Biochemistry of Basidiomycetous Fungi, 2004.
USU e-Repository©2008
Erman Munir : New Aspect of Oxalic Acid Biosynthesis in Biochemistry of Basidiomycetous Fungi, 2004.
USU e-Repository©2008
Erman Munir : New Aspect of Oxalic Acid Biosynthesis in Biochemistry of Basidiomycetous Fungi, 2004.
USU e-Repository©2008
Erman Munir : New Aspect of Oxalic Acid Biosynthesis in Biochemistry of Basidiomycetous Fungi, 2004.
USU e-Repository©2008