Abstract: The invention relates to a new laccase from rumen, namely the RL5 laccase. In particular, the invention relates to a polypeptide comprising the amino acid sequence shown in FIG. 11 and comprising at least the amino acids No. 80 to No. 150 of the amino acid sequence shown in FIG. 11, respectively. The invention also relates to the use of polypeptides further comprising the amino acid sequence of a DUF152 domain with a core sequence as shown in FIG. 18 as laccases. Furthermore, the invention relates to methods for producing inventive polypeptides and their use.

Abstract: The invention provides polypeptides coding for new esterases from rumen. The invention also relates to functional fragments or functional derivatives thereof as well as to nucleic acids encoding the polypeptides of the invention, vectors and host cells containing said nucleic acids, a method for producing the polypeptides and the use of the polypeptides according to the present invention for various industrial purposes and medical treatments. The invention also relate to the conversion of said esterases into lipases.

Abstract: The invention provides polypeptides coding for new cellulases from rumen, particularly from rumen ecosystem. The invention also relates to functional fragments or functional derivatives thereof as well as to nucleic acids encoding the polypeptides of the invention, vectors and host cells containing said nucleic acids, a method for producing the polypeptides and the use of the polypeptides according to the present invention for various industrial purposes and medical treatments.