Abstract: The present invention relates to a probe compound that can comprise any substrate or metabolite of an enzymatic reaction in addition to an indicator component, such as, for example, a fluorescence dye, or the like. Moreover, the present invention relates to means for detecting enzymes in form of an array, which comprises any number of probe compounds of the invention which each comprise a different metabolite of interconnected metabolites representing the central pathways in all forms of life. Moreover, the present invention relates to a method for detecting enzymes involving the application of cell extracts or the like to the array of the invention which leads to reproducible enzymatic reactions with the substrates. These specific enzymatic reactions trigger the indicator (e.g. a fluorescence signal) and bind the enzymes to the respective cognate substrates. Moreover, the invention relates to means for isolating enzymes in form of nanoparticles coated with the probe compound of the invention.

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.