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Carbohydrate-active Enzymes From the Zygomycete Fungus Rhizopus Oryzae: A Highly Specialized Approach to Carbohydrate Degradation Depicted at Genome Level

Carbohydrate-active Enzymes From the Zygomycete Fungus Rhizopus Oryzae: A Highly Specialized Approach to Carbohydrate Degradation Depicted at Genome Level

Evy Battaglia, Isabelle Benoit, Joost van den Brink, Ad Wiebenga, Pedro M Coutinho, Bernard Henrissat, Ronald P de Vries

BMC Genomics. 2011 Jan 17;12:38.

PMID: 21241472

Abstract:

Background:
Rhizopus oryzae is a zygomycete filamentous fungus, well-known as a saprobe ubiquitous in soil and as a pathogenic/spoilage fungus, causing Rhizopus rot and mucomycoses.
Results:
Carbohydrate Active enzyme (CAZy) annotation of the R. oryzae identified, in contrast to other filamentous fungi, a low number of glycoside hydrolases (GHs) and a high number of glycosyl transferases (GTs) and carbohydrate esterases (CEs). A detailed analysis of CAZy families, supported by growth data, demonstrates highly specialized plant and fungal cell wall degrading abilities distinct from ascomycetes and basidiomycetes. The specific genomic and growth features for degradation of easily digestible plant cell wall mono- and polysaccharides (starch, galactomannan, unbranched pectin, hexose sugars), chitin, chitosan, β-1,3-glucan and fungal cell wall fractions suggest specific adaptations of R. oryzae to its environment.
Conclusions:
CAZy analyses of the genome of the zygomycete fungus R. oryzae and comparison to ascomycetes and basidiomycete species revealed how evolution has shaped its genetic content with respect to carbohydrate degradation, after divergence from the Ascomycota and Basidiomycota.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP9016186-F	Esterase from Rhizopus oryzae		9016-18-6	Price

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