NOVELTY - Degrading biomass or pretreated biomass to sugars involves using an enzyme comprising a polypeptide having e.g. (a) a polypeptide sequence of any one of SEQ ID Nos: 3, 6, 9, 12 and 15, (b) a polypeptide i.e. at least 60%, preferably at least 99% homologous to the any one of SEQ ID Nos: 3, 6, 9, 12 and 15, and (c) a polypeptide sequence encoded by nucleic acids sequence of any one of SEQ ID NOs: 1, 2, 4, 5, 7, 8, 10, 11, 13 and 14 or nucleic acids that are at least 60%, preferably at least 99% homologous to any one of SEQ ID NOs: 1, 2, 4, 5, 7, 8, 10, 11, 13 and 14.    USE - The process is useful for degrading biomass or pretreated biomass to sugars (claimed). The enzymes are useful in food applications, such as cereal-based food products, in the textile industry such as for the treatment of cellulose-based fabrics, in the feed-enzyme industry such as for increasing the digestibility of nutrients, in the pulp and paper industry such as for enhancing bleachability of the pulp, in the waste treatment industry such as for the decolorization of synthetic dyes, and in the bioethanol industry such as for improving the ethanol yield and increasing the efficiency and economy of ethanol production.    DETAILED DESCRIPTION - Degrading biomass or pretreated biomass to sugars involves using an enzyme comprising a polypeptide having: (a) a polypeptide sequence of any one of SEQ ID NOs: 3, 6, 9, 12 and 15; (b) a polypeptide i.e. at least 60%, preferably at least 99% homologous to the any one of SEQ ID Nos: 3, 6, 9, 12 and 15; (c) a polypeptide sequence encoded by nucleic acids sequence of any one of SEQ ID NOs: 1, 2, 4, 5, 7, 8, 10, 11, 13 and 14 or nucleic acids that are at least 60%, preferably at least 99% homologous to any one of SEQ ID NOs: 1, 2, 4, 5, 7, 8, 10, 11, 13 and 14; (d) a polypeptide sequence encoded by a nucleic acids sequence hybridizing under stringent conditions to the polynucleotide of any one of SEQ ID NOs: 1, 2, 4, 5, 7, 8, 10, 11, 13 and 14; or (e) a polypeptide sequence encoded by a nucleic acids sequence hybridizing under stringent conditions to the reverse complement of a polynucleotide of any one of SEQ ID NOs: 1, 2, 4, 5, 7, 8, 10, 11, 13 and 14, where sequences not defined here may be found at ftp://ftp.wipo.int/pub/published-pct-sequences/publication.