The present invention relates to a method of converting oxalate to oxalyl-coA and/or oxalyl-coA to glyoxylate in a fungus and to a method of producing glycolic acid. Still, the present invention relates to a genetically modified fungus comprising increased enzyme activity associated with oxalyl-CoA. And furthermore, the present invention relates to use of the fungus of the present invention for producing oxalate, oxalyl-coA, glyoxylate and/or glycolic acid from a carbon substrate. Still furthermore, the present invention relates to a method of producing specific products and to a method of preparing the genetically modified fungus of the present invention.

The present invention relates to a method of converting oxalate to oxalyl-coA and/or oxalyl-coA to glyoxylate in a fungus and to a method of producing glycolic acid. Still, the present invention relates to a genetically modified fungus comprising increased enzyme activity associated with oxalyl-CoA. And furthermore, the present invention relates to use of the fungus of the present invention for producing oxalate, oxalyl-coA, glyoxylate and/or glycolic acid from a carbon substrate. Still furthermore, the present invention relates to a method of producing specific products and to a method of preparing the genetically modified fungus of the present invention.